Dissertations / Theses on the topic 'Radio reception'
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Stoneman, Timothy H. B. "Capturing Believers: American International Radio, Religion, and Reception, 1931-1975." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/10415.
Full textStoneman, Timothy H. B. ""Capturing believers American international radio, religion, and reception, 1931-1975" /." Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-11282005-173744/.
Full textDr. Susan Smulyan, Committee Member ; Dr. John Tone, Committee Member ; Dr. Larry Foster, Committee Member ; Dr. Steve Usselman, Committee Member ; Dr. John Krige, Committee Chair.
Hamilton, Shaun Ashley, and mikewood@deakin edu au. "A technique for improving the reception of scattering signal behind an obstacle." Deakin University. School of Sciences, 1991. http://tux.lib.deakin.edu.au./adt-VDU/public/adt-VDU20060726.151839.
Full textKunselman, Gary L. "Radio frequency power amplifiers for portable communication systems." Thesis, Virginia Tech, 1992. http://hdl.handle.net/10919/41493.
Full textPortable communication systems require, in part, high-efficiency radio frequency power amplifiers (RF PA) if battery lifetime is to be conserved. Conventional amplifier classifications and definitions are presented in a unified and concise format. The Bipolar Junction Transistor (BJT) and Metal-Semiconductor Field Effect Transistor (MESFET) are evaluated as active devices in high-efficiency RF PA designs. Two amplifier classes (class CE and class F) meet the system requirements of an 850 MHz operating frequency, a power output of 3 W, a battery supply voltage of 9 Vdc, and a sinusoidal-type signal to be amplified. Both classes are evaluated through recent research literature and simulated using the PSpice® computer simulation program. Class CE and class F are found to provide efficiencies exceeding 80 percent under the given system constraints.Master of Science
Tidwell, Steve Chase 1957. "DESIGN OF A 5X AFOCAL RELAY LENS FOR A HETERODYNE SYSTEM (LASER)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/291288.
Full textCarter, Paul Patrick Simon. "A study of co-channel interference in a digital mobile radio system." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.240240.
Full textSchaubach, Kurt Richard. "Microcellular radio channel prediction using ray tracing." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09122009-040308/.
Full textLintz, William A. "Radio frequency signal reception via distributed wirelessly networked sensors under random motion." Monterey, Calif. : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/dissert/2009/Sep/09Sep%5FLintz%5FPhD.pdf.
Full textDissertation supervisor: McEachen, John ; Tummala, Murali. "September 2009." Description based on title screen as viewed on November 5, 2009. Author(s) subject terms: Sensor Networks, Beamforming, Random Motion, Orientation Includes bibliographical references (p. 197-203). Also available in print.
Kellerman, Valpre Cecilia. "Modular approach to the development of a two-way radio receiver system." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16362.
Full textENGLISH ABSTRACT: The preliminary development of a FM radio receiver module is discussed. An existing narrowband system operating between 48MHz and 50MHz will be replaced. Digital components were investigated, compared and used with analogue techniques to build a more flexible two-way radio receiver system. A direct digital synthesizer was considered as a replacement for the current synthesized phased lock loop local oscillator and much attention was given to the local oscillator and mixer design, characteristics and measurement procedures. A detailed study of receiver systems was undertaken to determine the specifications needed for every receiver component to achieve satisfactory receiver performance in the end. Receiver characteristics as well as receiver measurement procedures are defined. A software tool was developed to aid the design process, establishing computationally whether the receiver specifications are met prior to the final design. The complete design process, from fundamental specifications through to the developed final receiver module is discussed. A modular design approach was used to guarantee easy manufacturing, substitution and testing. This approach comprises the break-down of the receiver into well defined components that are each matched to 50O. The separate components of the system were designed, measured and characterized to make it possible to replace only a single component instead of the entire system when a part becomes redundant.
AFRIKAANSE OPSOMMING: Die grondslag vir die ontwikkeling van ‘n FM radio ontvanger module word in hierdie dokument gelê. ‘n Bestaande noubandstelsel wat tussen 48MHz and 50MHz ontvang word vervang deur hierdie nuwe stelsel wat aangewend sal kan word in die bestaande tweerigtingradio se omhulsel. Digitale komponente is ondersoek, vergelyk en gebruik saam met analoogtegnieke om ‘n meer buigsame radiostelsel te bewerkstellig. ‘n Direkte digitale sintitiseerder is oorweeg as ‘n vervanging vir die huidige fasesluitlus ossillator met heelwat klem op die oscillator-en mengerontwerp, komponent spesifikasies en metingsprosedures. ‘n Diepgaande studie van ontvangerstelsels is gedoen om te bepaal wat die tipiese spesifikasies vir elke ontvangerstadium is, sodat die finale ontvanger se spesifikasies behaal kan word. Ontvanger eienskappe en meetprosedures word volledig gedefinieer. ‘n Sagtewareprogram is ontwikkel om die ontvanger-ontwerpsproses te vergemaklik deur vooraf te kan vasstel watter ontvangerspesifikasies bereik sal kan word al dan nie. Die volledige ontwerpsproses, vanaf fundamentele spesifikasies tot by die finale ontvanger word omskryf. ‘n Modulere-ontwerp prosedure is gebruik ter versekering van die maklike vervaardiging, vervanging en toetsing van elke komponent. Die radio is tydens ontwerp opgebreek in boublokkies wat elkeen aangepas word na 50O. Elke aparte boublokkie van die ontvangerstelsel is afsonderlik ontwerp, gemeet en volledig gespesifiseer om dit moontlik te maak om slegs een komponent te vervang in plaas van die hele stelsel wanneer ‘n enkele komponent nie meer beskikbaar is nie.
Song, Qipeng. "Radio access mechanisms for massive machine communication in long-range wireless networks." Thesis, Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2017. http://www.theses.fr/2017IMTA0047/document.
Full textAs a key step toward a smart society, apart from the Human-to-Human (H2H) communication, the future wireless networks, are expected to accommodate Machine-to-Machine Communication (also known as Machine Type Communication (MTC)). The latter is a new communication paradigm in which the devices can talk with each other without or with little human intervention. With the rapid proliferation of M2M applications, a huge number of devices will be deployed in many types of use cases such as smart metering, industry automation, e-health, etc. However, the current wireless networks are still not ready to hold traffic from MTC. The reason is twofold. First, the evolution of the wireless network seeks for higher throughput and lower latency. Second, the special features that MTC exhibits, such as huge number of deployed devices, small payload but frequent transmission, adverse installation location, etc., lead to that the requirements by H2H are no longer required by most of M2M use cases.From the state-of-the-art work, we find that two possible research orientations to efficiently handle M2M traffic: Low Power Wide Area Network (LPWAN) and adaption of the existing cellular networks. For both of them, the radio access mechanisms, used in Radio Access Network (RAN), is vitally important to make MTC a promising technology. From this view, radio access mechanism is the main focus of our studies. In this thesis, we present the contributions covering the aforementioned aspects: performance evaluation of ALOHA-based LPWAN networks, and a polling service that is an extension to RAN of LTE networks for periodic M2M traffic.The contributions of this thesis are summarized on the following axis: We make a survey about the energy efficiency related studies in the literatures. The main contribution in this survey is to review, classify the existing research works into different categories, and compare the pros and cons between categories. We also review the advances of the LPWAN related study. We study the impact of transmit power level diversity and imperfect power control to the slotted ALOHA based LPWAN systems. Some insightful design guidelines are obtained by manipulating the established analytical model. We study the performance of LPWAN system with macro reception diversity. By stochastic geometry, we get simple closed-form formulas for the packet loss rate and spatial throughput, which were unknown before. These formulas are very useful to analyze LPWAN networks (especially in urban areas) and to quantify the system capacity gain. By gathering several available results about the analysis of non slotted ALOHA, we finally get a synthesis framework to study the RAN of LPWAN. In terms of adaptations to RAN of LTE networks, we first analyze the conventional random access mechanism in LTE and identify the existing inefficiencies. We then propose a multiple period polling service for periodic M2M use cases. The proposed service is compared with conventional random access mechanism in LTE in a fluid model. The numerical results show that the proposed service dramatically reduces the consumption of system resources such as Radio Network Temporary Identifier (RNTI), Resource Block (RB) and has a higher energy efficiency due to the avoidance of random access procedure and related signaling messages
Banciu, Marian Gabriel Electrical Engineering & Telecommunications Faculty of Engineering UNSW. "Radio frequency and microwave design methods for mobile communications." Awarded by:University of New South Wales. School of Electrical Engineering and Telecommunications, 2003. http://handle.unsw.edu.au/1959.4/18814.
Full textNel, Christoffel Antonie. "The creation of nonlinear behavioral-level models for system level receiver simulation." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/50128.
Full textENGLISH ABSTRACT: The aim of this thesis was to investigate the use of behavioral level models in receiver simulations using the capabilities of Agilent's Advanced Design System. Behavioral level modeling has become increasingly attractive because it offers faster and easier results for system level simulations. The work in this thesis focused strongly on nonlinear measurements to characterize the various nonlinear phenomena that are present in amplifiers and mixers. Measurement automation software was developed to automate the process. An error correction technique was also developed to increase the accuracy of spectrum analyzer measurements. The measured data was used to implement the behavioral level amplifier and mixer models in ADS. The accuracy of the models was compared to measured data and the different available models were compared. Finally the models were combined to realize different receivers and were used to do typical receiver tests. These test include gain and gain compression, two-tone intermodulation and spurious responses. The results are compared to measured data to test the accuracy and usefulness of the models and simulation techniques.
AFRIKAANSE OPSOMMING: Die doel van hierdie tesis was om stelsel-vlak gedrags-modelle te ondersoek soos hulle in Agilent se Advanced Design System (ADS) aangebied word. Die modellering van die stelselvlak-gedrag van komponente en stelsels is aantreklik aangesien dit 'n hoë vlak beskrywing van komplekse kommunikasie stelsels moontlik maak. Akkurate stelsel-vlak simulasies sal lei tot vinnige ontwikkeling en evaluasie van nuwe sisteme. Die resultate wat verkry word is egter afhanklik van die beskikbaarheid van akkurate stelsel-vlak gedragsmodelle Die tesis het baie sterk op metings staat gemaak om die nie-liniêre gedrag van versterkers en mengers te karakteriseer. Meet sagteware is ontwikkel om die verskillende metings te automatiseer. Fout korreksie vir spetrum-analiseerder-metings is ook ontwikkel. Die gemete data is gebruik om die nie-liniêre gedrags-modelle in ADS te implementer. Die modelle is in simulasies gebruik en die akuraatheid van die simulasies is teen gemete data getoets. Die finale deel van die tesis gebruik die modelle om tipiese ontvanger karakteristieke te voorspel. Die volgende toetse is gedoen: aanwins en kompressie, twee-toon intermodulasie en hoer orde meng produkte. Die resultate van die toetse is met gemete data vergelyk om die akuraatehied en bruikbaarheid van die verskillende modelle te vergelyk.
Rundquist, Victor Frederic. "Weak signal reception using software defined radios and a two-element antenna array." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Summer/Theses/RUNDQUIST_VICTOR_6.pdf.
Full textCheema, Munira. "The production and reception of gender-based content in Pakistani television culture." Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/54446/.
Full textBauer, Zachary Obenour. "A Calibration Method for a Controlled Reception Pattern Antenna and Software Defined Radio Configuration." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1357402542.
Full textHawbaker, Dwayne Allen. "Indoor wide band radio wave propagation measurements and models at 1.3 ghz and 4.0 ghz." Thesis, Virginia Tech, 1991. http://hdl.handle.net/10919/44287.
Full textMaster of Science
PERES, FRANCISCO DE ASSIS CAMPOS. "EVALUATION OF RADIO PROPAGATION MODELS FOR FIXED RECEPTION OF DIGITAL TV SIGNALS ON UHF BAND." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=18929@1.
Full textCom o advento da TV digital no Brasil, a necessidade de reuso dos canais para diferentes entidades, e a importância das emissoras oferecerem a melhor qualidade de serviço para seus usuários, dentre outros fatores, criam um ambiente propício para o estudo de modelos de predição de cobertura para que tanto as emissoras possam dimensionar corretamente suas estações, como os órgãos reguladores possam distribuir os canais de forma harmoniosa. Este trabalho apresenta medidas de campo realizadas nas cidades do Rio de Janeiro, Belo Horizonte e São Paulo e as compara com valores calculados usando os modelos de Deygout-Assis, CRC-Predict, ITU-R P.526 e ITU-R P.1546.
Since the beginning of Digital TV in Brazil, the need of channel reuse for different broadcasters, the importance to offer a service with good quality, among other issues, created a good environment for studying prediction methods for RF coverage, so that broadcasters can correctly specify its stations and also the government regulators can allocate channels without interference. This work presents field measurements made in Rio de Janeiro, Belo Horizonte and São Paulo and compare them with predicted values using the methods of Deygout- Assis, CRC-Predict, ITU-R P.526 e ITU-R P.1546.
Eriksson, Elin, and Nicklas Kihlberg. "Bortglömda nyheter : En pilotstudie om hågkomsten av nyheterna i Dagens eko kvart i fem." Thesis, Södertörns högskola, Institutionen för samhällsvetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-21478.
Full textCAVALCANTI, JOAO FELIPE BUENAGA. "UHF RADIO PROPAGATION MEASUREMENTS IN SUBURBAN ENVIRONMENTS FOR DIGITAL TV: STUDY OF COVERAGE FOR FIXED RECEPTION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=7623@1.
Full textA previsão da perda de propagação na faixa de UHF tem grande importância para o dimensionamento dos sistemas de TV Digital. Com base em uma grande campanha de medidas na cidade do Rio de Janeiro pretende- se, com esse trabalho, descrever o comportamento do sinal, assim como verificar a existência de modelos adequados para caracterizá-lo.
Methods for prediction of propagation loss in the UHF band have great importance for the Digital TV systems sizing. With basis of a great measures campaign in Rio de Janeiro city, this work intendeds to describe the behavior of the signal end to verify the existence of adjusted models to characterize it.
Yeung, Kim-sang, and 楊儉生. "The design and multiplier-less realization of a novel digital IF for software radio receivers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B2946660X.
Full textSoelaiman, Adi Dharma, and Rina Pudjiastuti. "A Survays On Fading Channel Over West - Java Area for Flight Test Radio Telemetering Purposes." International Foundation for Telemetering, 1988. http://hdl.handle.net/10150/615047.
Full textThis paper discusses one approach to determine a characteristic of West - Java's air and ground segment as a block-box to accomodate radio waves propagation, especially in L-band ranges, by evaluating both the topographical data and radio reception pattern as measured from ground based telemetry receiving-end system. All the measured signals are random and assumed to be stationair and ergodic. In order to characterize the channel for polarization diversity reception, some statistical analysis are applied to the signal strength measured of both - RHCP and LHCP components of 1531 MHz propagated waves as transmitted fr om NC212-200 PK-NZJ-aircraft. Some computer calculated correlograms of measured data are shown herewith, it is focused for a certain radio corridor at radial 265E relative to the ground based receiving antenna. More over some curves of predicted multipath gain factor are also presented to gain more theoretical back ground. When this paper is written, a further field experiments on the matter concerned is beeing conducted.
Gendron, Paul John. "A comparison of digital beacon receiver frequency estimators." Thesis, This resource online, 1993. http://scholar.lib.vt.edu/theses/available/etd-09292009-020307/.
Full textVan, Den Biggelaar Olivier. "Distributed spectrum sensing and interference management for cognitive radios with low capacity control channels." Doctoral thesis, Universite Libre de Bruxelles, 2012. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/209612.
Full textIn this thesis we investigate how to improve the efficiency of cognitive radio networks when multiple cognitive radios cooperate to sense the spectrum or control their interferences. A major challenge in the design of cooperating devices lays in the need for exchange of information between these devices. Therefore, in this thesis we identify three specific types of control information exchange whose efficiency can be improved. Specifically, we first study how cognitive radios can efficiently exchange sensing information with a coordinator node when the reporting channels are noisy. Then, we propose distributed learning algorithms allowing to allocate the primary network sensing times and the secondary transmission powers within the secondary network. Both distributed allocation algorithms minimize the need for information exchange compared to centralized allocation algorithms.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Tsui, Kai-man, and 徐啟民. "Efficient design and realization of digital IFs and time-interleaved analog-to-digital converters for software radio receivers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40987917.
Full textTsarwe, Stanley Zvinaiye. ""Too tired to speak?": investigating the reception of Radio Grahamstown's Lunchtime Live show as a means of linking local communities to power." Thesis, Rhodes University, 2011. http://hdl.handle.net/10962/d1002943.
Full textDodd, Howard Mannin. "The Validity of Using a Geographic Information System's Viewshed Function as a Predictor for the Reception of Line-of-Sight Radio Waves." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/35115.
Full textMaster of Science
Li, Jian. "Investigating the effect of the DGNSS SCAT-I data link on VOR signal reception." Ohio : Ohio University, 1996. http://www.ohiolink.edu/etd/view.cgi?ohiou1178220159.
Full textSahu, Biranchinath. "Integrated, Dynamically Adaptive Supplies for Linear RF Power Amplifiers in Portable Applications." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7607.
Full textCavalcante, Andrea Pinheiro Paiva. "A Escuta popular da RÃdio ComunitÃria do Edson Queiroz: estudo introdutÃrio sobre a produÃÃo do sujeito no espaÃo da periferia." Universidade Federal do CearÃ, 2006. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1040.
Full textnÃo hÃ
Esta pesquisa relata como se dà a produÃÃo do sujeito no espaÃo da periferia a partir das mediaÃÃes de cotidiano, cultura, linguagem e educaÃÃo. Partindo da anÃlise dos programas radiofÃnicos Momento SaÃde e A ForÃa da Mulher SolidÃria, apresentados na RÃdio ComunitÃria Edson Queiroz, no bairro do DendÃ, em Fortaleza, elaboram-se os cenÃrios discursivos sobre os quais se identifica como se erige, a partir do ambiente da emissora, o sujeito da periferia. O Momento SaÃde, produÃÃo de estudantes do Curso de Enfermagem, assume um discurso de mÃo Ãnica, ao tratar das questÃes de saÃde do bairro e deixa entrever na sua narrativa a concepÃÃo de popular sob a qual ainda repousa o saber acadÃmico relacionado aos conteÃdos de saÃde. As marcas discursivas, neste caso, possibilitam perceber que nas falas das estudantes hà uma ausÃncia das vozes da comunidade, visÃveis a partir da escuta coletiva pelo Grupo de Mulheres da Socioeconomia SolidÃria que atua no bairro. Este estudo de recepÃÃo, ao identificar esse silenciamentos, possibilita a organizaÃÃo do programa A ForÃa da Mulher SolidÃria, experiÃncia realizada pelas mulheres, que, ao se moverem nesse âentre-lugaresâ, saem de condiÃÃo de ouvintes para o de produtoras de um discurso e de sentidos sobre a vida no bairro. Os procedimentos metodolÃgicos combinam consultas Ãs obras de referÃncias sobre a temÃtica, especialmente de MartÃn-Barbero, e pesquisa de campo, mediante entrevistas, observaÃÃes e intervenÃÃo ocorrente com a criaÃÃo do programa das mulheres. A experiÃncia de A ForÃa da Mulher SolidÃria mostra que, valorizando a dimensÃo do polÃtico no cultural no tecido da vida cotidiana, se erige o sujeito na periferia.
This research reports the consolidation of the individual in the outskirts taking place, rising from the mediation of everyday life, culture, language and education. Starting from the analysis of two radio programs, Momento SaÃde (Health Moment) and ForÃa da Mulher SolidÃria (The strength of the Solidary Woman), presented by Edsonâ Queirozâs Community Radio station, in Dendà neighborhood, in Fortaleza, discursive sceneries are elaborated on which it can be identified how the individual from the outskirts emerges from the environment of the broadcasting station. Momento SaÃde, produced by students in Nursing School, takes on a one-way speech when dealing with health issues in the neighborhood; in its narrative, it allows a glimpse at the popular notions under which the academic knowledge still lies when related to health matters. The speech marks, in this case, allows the perception that in the studentsâ talks there is a lack of community voices, visible from the common listening by the Womenâs Group of the Solidary Socioeconomics that works in the neighborhood. This reception study, when identifying this silence, allows the organization of the program A ForÃa da Mulher SolidÃria, an experience carried out by the women, who, moving around these âbetween-placesâ, give up the role of listeners and take on the role of producers of speech and meanings about life in the neighborhood. The methodological procedures combine consultations to reference books on the topic, especially MartÃn-Barbero and field research, through interviews, observation and interventions that occurred with the womenâs program. The A ForÃa da Mulher SolidÃria experience shows that, enriching the political sphere in the culture that weaves everyday life, the outskirts individual rises.
Dutournier, Céline. "La poésie hors du livre : étude sur les médiations orales de la poésie en France de 1945 aux années 60." Thesis, Paris 4, 2012. http://www.theses.fr/2012PA040228.
Full textBetween 1945 and 1960, French poetry tended to re-explore its oral roots with radio and television broadcasting, recording and live performance. Theatres developed, aside from poetical performances, some attempts for staged poems. The “question of the book” in its relation to other media turned out to be central in the poetical imagination and debates of the time: some endeavoured to rethink the communication modes of poems, to open the poetical field to a wider public, to explore the possibilities offered by new recording and sound broadcasting techniques, others tried to use the media as a poetical performance space. This dissertation, which collects many written and audiovisual archives, surveys the oralisation of French poetry between 1945 and the 1960s and attempts to reassess, through the detailed study of diverse forms of “poems outside the book”, the importance and the role of those practices in twentieth century poetry history
Schwartz, Danielle. "From turnstile to transmitter : John Vassos, industrial designer, 1927-1941." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=85957.
Full textMacedo, Renata Guedes Mourão. "Espelho mágico: empregadas domésticas, consumo e mídia." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/8/8134/tde-31102013-101940/.
Full textThe research analyses the cultural consumption (particularly television and radio) of domestic workers in São Paulo (SP). Through mapping the cultural preferences of these women workers divided in three profiles, romantic, up to date and evangelic I raise reflections on the importance of these media among them. In parallel, through the analyses of domestic workers representations in television, in particular in the telenovela Cheias de Charme (Globo, 2012, 19h30), I discuss the transformations on the image of these workers in fiction and in real life exploring the passage from poor workers to class C consumers. In this context, issues such as domestic labor, gender, class, race, consumption and media are interrelated.
Afonso, Maria Rita Teixeira. "MÍDIA E COMUNIDADE: estudo sobre produção e recepção da rádio Heliópolis FM." Universidade Metodista de São Paulo, 2007. http://tede.metodista.br/jspui/handle/tede/851.
Full textThe research is a study about output and reception of the radio Heliópolis FM, by his public, Heliópolis s inhabitants. The objective was understand how radio is perceived by his public. The study was divide in two phases. The first is based in bibliographical research. In the following phase, rescues-itself the transcript of the sender and verifies-itself the appropriation of the Heliópolis FM by inhabitants and itself to communal paper perform sender, investigating itself as to radio is appropriated by his assiduous listeners. The approach to the reception was deed having for base the theoretical-methodological slope of the social use of the means, of Jesús Martín-Barbero. This kind of study consists of the displacement of the space of interest of the means for the place where is produced his sense social movements and, of a special way, of those that start from the neighborhood (1997). To technical it used was the interview is structured. I concluded that to radio is perceived as communal by his receivers mainly because opens space for the local population produce programs, choose the song that will be touched, present his works and utilize his service like the of location of persons and documents lost freely.(AU)
O trabalho é um estudo sobre produção e recepção da rádio Heliópolis FM, por seu público alvo, moradores de Heliópolis. O objetivo foi compreender como a rádio é percebida por seus ouvintes. Metodologicamente, o estudo foi divido em duas etapas. A primeira é mais conceitual e baseada em pesquisa bibliográfica. Na etapa seguinte, resgata-se o histórico da emissora e verifica-se a apropriação da Heliópolis FM por moradores e se a emissora desempenha papel comunitário, investigando-se como a rádio é apropriada por seus ouvintes assíduos. A aproximação à recepção foi feita tendo por base a vertente teórico-metodológica do uso social dos meios, de Jesús Martín-Barbero, segundo o qual este tipo de estudo consiste no deslocamento do espaço de interesse dos meios para o lugar onde é produzido o seu sentido movimentos sociais e, de um modo especial, daqueles que partem do bairro (1997). A técnica usada foi a entrevista semi-estruturada. Conclui-se que a rádio é percebida como comunitária por seus receptores principalmente porque abre espaço para a população local produzir programas, escolher as músicas que serão tocadas, apresentar seus trabalhos e utilizar seus serviços como o de localização de pessoas e documentos perdidos gratuitamente.(AU)
Diagne, Yacine. "Sociologie politique d'une expérience de démocratie participative. Le cas d'une radio communautaire au Sénégal." Thesis, Paris 9, 2014. http://www.theses.fr/2014PA090018/document.
Full textAspiring to “give a voice” to the poor people of Pikine, a suburb of the Senegalese capital, “Local Debate” is an interactive political programme of the community radio Air’Jeunes, created in the late nineties at the initiative of youth associations in the Dakar region with support from a major Canadian NGO. This thesis explores the use of this programme by local citizens in three main areas where activists and proponents of participatory democracy are committed to developing citizen action mechanisms, aiming to correct the defects and shortcomings under the democratic ideal of representative government: the role of citizens in the production system of local public goods, symbolic relationships between elected leaders and electors, and the public space for debate on public policies and the actions of representatives. Based on an ethnographic field study conducted in three phases between 2006 and 2011 in the radio production studio and the show’s listening sites, it appears that, even if the programme has enabled forms of contestation of local authority to be voiced publicly without mediation, the realisation of the original project faced an unfavourable local context marked by the lack of resources given to local officials to exercise their newly decentralised powers and a local political journalism polarised around two dominant forms, leaving little room for debate: the antagonistic journalism of big private groups and small informal press, and the legitimising journalism of the public service group. Despite their militant commitment to the project, radio staff and hosts whose social origins and educational backgrounds distance them from the forms of consumption of information goods and activities of Pikine’s inhabitants, as well as the dynamic activities of informal neighbourhood associations in the suburbs of Dakar, have gradually yielded to forces of attraction exercised by mainstream private radios, influencing their vision of their professional future and, in turn, their journalistic practice
Pavan, Ricardo. "Tradições e contemporaneidade na midiatização das identidades culturais: as configurações humorísticas radiofônicas do top show e os sentidos produzidos por ouvintes do extremo-oeste de Santa Catarina." Universidade do Vale do Rio dos Sinos, 2011. http://www.repositorio.jesuita.org.br/handle/UNISINOS/3011.
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Esta pesquisa faz um delineamento do tecido comunicacional que se institui entre as construções humorísticas de um programa radiofônico e o imaginário identitário de sua audiência. Analisam-se os diferentes tipos sociais e cenários, estratégias humorísticas e relações com os ouvintes construídos no humorístico Top Show, exibido pela Rádio Peperi Top 104 FM, de São Miguel do Oeste (SC), bem como as relações com o contexto mediado/midiatizado da recepção. O objetivo é investigar como o programa de humor articula em suas construções humorísticas elementos simbólicos presentes no cotidiano cultural dos seus ouvintes e entender como se constituem os sentidos, as apropriações, os pactos e as recusas dessas construções na recepção do programa. Procura-se, então, analisar a construção discursiva das identidades regionais, expressa nos elementos caricatos e paródias apresentados no programa e nas operações simbólicas realizadas pelos ouvintes. Para a análise dos âmbitos de produção/produto/recepção adotou-se uma perspectiva multimetodológica que atenda essas diferentes dimensões do processo comunicacional. Os resultados apontam para uma mescla de referenciais vinculados à experiência midiatizada e às matrizes da cultura regional, como é o caso do sotaque, da tradição, do espaço rural e das identidades étnicas, os quais permeiam os dispositivos comunicacionais que constituem o produto midiático investigado, além de constituir pactos de leitura com a recepção.
This dissertation discusses the communicational texture instituted between the comedic constructions of a radio program and the identitarian images of its audience. It analyzes the different social types and scenarios, humor strategies and relationships with listeners that are constructed in the radio comedy program called Top Show, broadcast by Rádio Peperi Top 104 FM, an FM radio station in São Miguel do Oeste, state of Santa Catarina, Brazil, as well as the programs relations with the media-related context of reception. The dissertations goal is to investigate how that radio program includes in its comedic constructions symbolic elements that are present in the daily culture of its listeners and to understand how the meanings, appropriations, alliances and refusals of those constructions are constituted in the program?s reception. It also analyzes the discoursive construction of regional identities as expressed in the caricatural and parodistic elements that are presented in the program and the audiences symbolic operations. For the analysis of the areas of production/product/reception the author adopts a multi-methodological approach that covers these various dimensions of the communication process. The results show a blending of referents connected to the media-related experience and to the matrices of regional culture, such as accent, tradition, rural space and ethnic identities, which permeate the communicational devices that make up the radio program and establish reading alliances with the reception.
Olandim, Richard John Lintulahti. "Diversidade espacial na recepção em sistemas ISDB-Tb." Universidade Presbiteriana Mackenzie, 2015. http://tede.mackenzie.br/jspui/handle/tede/1464.
Full textIn Brazil, the broadcasting system for television content in high definition is the ISDB-Tb. Although robust, the content transmission in this system, like in any radio frequency propagation, can suffer from external attenuating factors, such as distortion by multipath propagation. One of the techniques used in radio communications for minimizing the effects of this type of distortion is the spatial diversity reception, which uses multiple antennas connected to a single receiver. The signals, received by different antennas, are combined, in a technique known as MRC or Maximal Ratio Combiner, so that the output signal-to-noise ratio is greater than the individual signal-to-noise ratios, allowing the successfully decoding of the received content, even though the individual signal in each antenna does not have sufficient quality to be decoded independently. This study aims to establish a method of spatial diversity in receiving television signals in ISDB-Tb, pondering between the advantages and disadvantages of their use in edge regions of coverage, where the reception of the Brazilian digital TV system is not yet total.
No Brasil, o sistema de radiodifusão para conteúdos televisivos em alta definição é o ISDB-Tb. Apesar de robusto, a transmissão de conteúdos neste sistema, como qualquer propagação em radiofrequência, pode sofrer com fatores externos atenuantes, como por exemplo a distorção por propagação em multi-percurso. Uma das técnicas utilizadas em radiocomunicação para que se minimizem os efeitos deste tipo de distorção é a diversidade espacial na recepção, que utiliza múltiplas antenas conectadas a um mesmo receptor. Os sinais, recebidos pelas diferentes antenas, são trabalhados em uma técnica conhecida como MRC ou Combinação de Máxima Razão, de modo que a relação sinal-ruído de saída seja maior do que as relações sinal-ruído individuais, permitindo a decodificação do conteúdo com sucesso, mesmo que os sinais individuais em cada antena não tenham qualidade suficiente para serem decodificados independentemente. Este estudo tem como objetivo propor um método de diversidade espacial na recepção de sinais televisivos no padrão brasileiro ISDB-Tb, ponderando entre as vantagens e desvantagens de sua utilização em regiões de borda de cobertura, onde a recepção do sistema brasileiro de TV digital ainda não é total.
Thiebaut, Matthieu Jacques Andre. "Receptor super-regenetativo (900 MHz) implementado em tecnologia CMOS 0,35 'mu'm." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/262030.
Full textDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
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Resumo: O objetivo deste trabalho é propor uma topologia de receptor adequada para atender as exigências de uma rede de sensores sem fio, onde baixo consumo e baixo custo de fabricação são fundamentais.A topologia escolhida foi a do receptor super-regenerativo realizado em tecnologia CMOS 0,35Km e operando em 900 MHz. O chip foi montado e testado numa placa de alumina junto com alguns componentes passivos externos (circuito tanque e adaptação de impedância) necessários para seu funcionamento. Uma sensibilidade de -82 dBm para uma taxa de erro binário (BER) inferior a 0,1% foi obtida com um sinal modulado tudo-ou-nada (On-Off keying, OOK) de 64 kbits/s. O consumo deste receptor foi de 2,5 mW para uma tensão de alimentação de 2V.
Abstract: The purpose of this work is to develop a radio receiver, which is suitable for application in wireless sensor networks. Among the essential requirements for one such radio are included low power, low cost and high sensitivity. The topology of a super-regenerative receiver to operate in 900MHz was chosen, since it complies with all these requirements in addition to being appropriate for integration. Samples of the developed radio receiver were fabricated in 0,35Km CMOS technology. Prototypes were assembled on alumina plate using a few additional external components as an alternative to evaluate the performance of the radio without being affected by the low quality of the passives L and C used in the tuning block (tank and matching circuit). Test results have shown that the developed receiver features sensitivity of -82 dBm for a bit error rate (BER) lower than 0,1% with an On-Off Keying modulated signal of 64 kbit/s. Measure power consumption has been 2,5 mW for a supply voltage of 2 V.
Mestrado
Eletrônica, Microeletrônica e Optoeletrônica
Mestre em Engenharia Elétrica
Brimson, James M. "The pharmacology of the sigma-1 receptor." Thesis, University of Bath, 2010. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.518104.
Full textGómez, Sócola Josemaría. "Diseño e implementación de un sistema receptor para la estimación del contenido total de electrones relativo(rTEC)." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2017. http://hdl.handle.net/10757/628066.
Full textA radio beacon receiver system is being developed at the Jicamarca Radio Observatory. This ground-based receiver will be used to obtain ionospheric total electron content (TEC) over the Peruvian region by detecting satellite radio beacon signals. This work is part of a project that involves the development of a CubeSat radio beacon for ionospheric measurements. The receiver station will have the capability to obtain differential phase measurements from current operational satellite radio beacons and from the new CubeSat radio beacon developed at the Jicamarca Radio Observatory. Due to the proximity to the magnetic equator, the obtained TEC measurements will allow the investigation of the equatorial ionosphere which plays a significant role in the generation of irregularities such as the equatorial spread F. Here, we present a description of the initial beacon receiver system design which is based on quadrifilar helix antennas, cavity filters, amplifiers and software-defined radio equipment. Initial simulations and tests of the different stages of the receiver system, including the algorithm for the data acquisition, will be shown. In addition, we will describe the design and tests of our cavity filters that show a better performance than commercial ones. Finally, we will explain how the receiver system determinates the TEC in the ionosphere using the Differential Doppler technique and how multi-ples scientific satellites constellations like COSMOS and COSMIC help us to do our measurements. This receiver system instrumentation will add to the set of groundbased instruments already operating at the Jicamarca Radio Observatory and will provide a valuable data set for ionospheric research.
Tesis
Finger, Camus Ricardo. "Design and construction of a digital sideband separating spectrometer for the 1.2-meter southern radio telescope." Tesis, Universidad de Chile, 2013. http://www.repositorio.uchile.cl/handle/2250/113943.
Full textLos receptores de doble banda lateral (2SB) son particularmente útiles para la observación de espectros astronómicos complejos en un amplio rango de frecuencias. Son extensamente utilizados en radio astronomía siendo sus principales ventajas el evitar la confusión espectral y disminuir la temperatura efectiva de sistema en un factor de dos con respecto a los receptores de doble banda lateral (DSB). Usando la actual tecnología analógica, los receptores 2SB de banda ancha obtienen generalmente cocientes de rechazo de banda lateral (SRR) de 10 a 15 dB, valores insuficientes para algunas aplicaciones astronómicas. En este trabajo se presenta la arquitectura típica de los receptores astronómicos de doble banda lateral y se describen las principales causas que limitan el rendimiento de la tecnología analógica actual. Se elabora sobre la necesidad de un alto rechazo de banda lateral para observaciones astronómicas y se propone un nuevo enfoque usando tecnología digital para superar los problemas que limitan el rechazo de banda lateral de los instrumentos actuales. Durante este trabajo se estudiaron técnicas digitales para mejorar el rendimiento de los receptores con separación de banda lateral. Se presenta el diseño e implementación de un espectrómetro de transformada de Fourier rápida (FFT) con separación de banda lateral digital incluyendo la implementación de un receptor analógico de 4 GHz construido para probar los diseños y medir el rechazo de banda lateral. La configuración utiliza una arquitectura clásica de receptor 2SB, excepto que las salidas de los mezcladores son directamente digitalizadas, antes del híbrido de IF, utilizando dos ADCs de 8 bits a 1 GSPS. El híbrido de IF está implementado en la FPGA junto con un conjunto de vectores de calibración que, debidamente elegidos, compensan los desequilibrios de amplitud y fase del receptor analógico. El receptor calibrado exhibe un cociente de rechazo banda lateral superior a 40 dB para todo el ancho de banda de recepción de 2 GHz. Esto representa una mejora de un factor de 100 a 1000 respecto a los actuales receptores radio astronómicos.
Brito, Filho Francisco de Assis. "VCO Banda Larga Integrado para Receptor a Cinco Portas." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15300.
Full textConselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico
This work presents an wideband ring VCO for cognitive radio five-port based receivers. A three-stage differential topology using transmission gate was adopted in order to maintain wide and linear tuning range and a low phase-noise. Monte-Carlo analysis were performed for phase-shift response of individual stages, which is an important figure of merit in five-port works. It was observed a fairly linear correlation between control voltage and oscillation frequency in the range between 200 MHz and 1800 MHz. The VCO was preliminarily designed for IBM 130nm CMOS technology
Este trabalho apresenta um VCO anel banda-larga para ser utilizado em receptores para R?dio Cognitivo baseados no correlator a cinco portas. Uma arquitetura diferencial de tr?s est?gios com porta de transmiss?o ? utilizada como forma de manter uma sintonia linear em larga faixa de frequ?ncias, bem como, um baixo ru?do de fase. An?lises de Monte-Carlo foram feita para avaliar as varia??es de fase em cada est?gio, o que constitui uma figura de m?rito importante em receptores baseados no correlator de cinco portas. Observou-se correspond?ncia razoavelmente linear entre tens?o de controle e freq??ncia de oscila??o na faixa compreendida entre 200 MHz e 1800 MHz. O VCO foi preliminarmente projetado para tecnologia CMOS IBM de 130 nan?metros
Stangland, Jenna Emily. "Biochemical Markers of Iron Status in Recreational Female Runners." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1374168831.
Full textKardeby, Caroline. "The Concordance between Immunohistochemical Staining and Silver In Situ Hybridization for HER2 Status in Breast Cancer Tissue Samples." Thesis, Uppsala universitet, Institutionen för medicinsk biokemi och mikrobiologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-154951.
Full textZierau, Oliver, Ken Y. Z. Zheng, Anja Papke, Tina T. X. Dong, Karl W. K. Tsim, and Günter Vollmer. "Functions of Danggui Buxue Tang, a Chinese Herbal Decoction Containing Astragali Radix and Angelicae Sinensis Radix, in Uterus and Liver are Both Estrogen Receptor-Dependent and -Independent." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-165221.
Full textZierau, Oliver, Ken Y. Z. Zheng, Anja Papke, Tina T. X. Dong, Karl W. K. Tsim, and Günter Vollmer. "Functions of Danggui Buxue Tang, a Chinese Herbal Decoction Containing Astragali Radix and Angelicae Sinensis Radix, in Uterus and Liver are Both Estrogen Receptor-Dependent and -Independent." Hindawi Publishing Corporation, 2014. https://tud.qucosa.de/id/qucosa%3A28666.
Full textFuentes, Prieto Roberto Mathias. "Programación, calibración y medición del patrón de radiación de un receptor radio-astronómico digital de doble polarización implementado en una plataforma FPGA." Tesis, Universidad de Chile, 2017. http://repositorio.uchile.cl/handle/2250/151204.
Full textEn los últimos años el poder de cómputo que presentan los arreglos de circuitos lógicos reprogramables (FPGA) ha aumentado considerablemente. Junto a ello han mejorado los conversores análogos digital (ADC), lo cual ha permitido expandir su uso en radioastornomía como espectrómetros, correlacionadores y separadores de banda lateral. La presente memoria busca demostrar nuevas aplicaciones de la tecnología mediante la implementación de un detector de polarización usando una FPGA y evaluar su viabilidad como receptor astronómico. Trabajos previos en el laboratorio de ondas milim\'etricas demostraron la síntesis de polarización digital con excitaciones inyectadas por guías de onda. El contenido de esta memoria presenta las mejoras realizadas a dicho polarizador digital, con el objetivo de permitir la calibración y mediciones en espacio libre. Se desarrollaron los dispositivos de hardware y firmware necesarios para medir patrones de radiación del sistema completo, es decir del receptor digital acoplado a una antena de bocina. Se resolvió el problema de integrar espectros complejos mediante el uso de una señal de referencia, y se desarrollaron los programas computacionales que automatizan la medida de patrón de radiación. Se implementó exitosamente un sistema capaz de medir simultáneamente la co-polarización y cros-polarización de un receptor radioastronómico, así como las rutinas necesarias para calibrar dicho receptor. Se demuestra que el proceso de calibración puede mejorar los niveles de cros-polarización del sistema completo en un factor 10 cuando se optimiza sobre un disco de 10 grados de diámetro angular en torno al eje óptico, y en un 20% cuando se optimiza en el ángulo sólido donde el patrón de radiación es mayor a -10dB. Se concluye que el proceso de calibración se debe realizar en el campo lejano y puede, además de mejorar los niveles de cros-polarización, corregir la posición del ángulo de polarización del sistema completo.
Khan, Junaid Ali. "Progesterone Receptor Isoforms : functional Selectivity and Pharmacological Targeting." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00769945.
Full textBiselli, Sabrina [Verfasser], and Günther [Akademischer Betreuer] Bernhardt. "Synthesis and Pharmacological Characterization of Subtype-Selective Ligands, Including Radio- and Fluorescence Labeled Ligands, for the Histamine H₂ Receptor / Sabrina Biselli ; Betreuer: Günther Bernhardt." Regensburg : Universitätsbibliothek Regensburg, 2020. http://d-nb.info/1213096022/34.
Full textCano, de Diego Juan Luis. "Cryogenic Technology in the Microwave Engineering: Application to MIC and MMIC Very Low Noise Amplifier Design." Doctoral thesis, Universidad de Cantabria, 2010. http://hdl.handle.net/10803/10674.
Full textSome applications such as radio astronomy and deep space communications require very sensitive receivers. This dissertation deals with the cryogenic technology applied to the microwave engineering and focuses on the design of very low noise amplifiers both in hybrid (MIC) and monolithic (MMIC) technologies. The work covers a wide field of knowledge from hardware manufacture and system set up to final applications design and measurement. Starting from guidelines and advices to design cryogenic systems (cryostats) this document goes into S-parameters and noise measurements in deep. The design of cryogenic circuits is initialized with the study of the effect of low temperatures on microwave transistors and components focusing in indium-phosphide (InP) devices. The knowledge gained with this study is applied to the design of very low noise amplifiers in Ka-band.
CAVALCANTE, Andrea Pinheiro Paiva. "A Escuta popular da Rádio Comunitária do Edson Queiroz: estudo introdutório sobre a produção do sujeito no espaço da periferia." http://www.teses.ufc.br, 2006. http://www.repositorio.ufc.br/handle/riufc/3341.
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This research reports the consolidation of the individual in the outskirts taking place, rising from the mediation of everyday life, culture, language and education. Starting from the analysis of two radio programs, Momento Saúde (Health Moment) and Força da Mulher Solidária (The strength of the Solidary Woman), presented by Edson’ Queiroz’s Community Radio station, in Dendê neighborhood, in Fortaleza, discursive sceneries are elaborated on which it can be identified how the individual from the outskirts emerges from the environment of the broadcasting station. Momento Saúde, produced by students in Nursing School, takes on a one-way speech when dealing with health issues in the neighborhood; in its narrative, it allows a glimpse at the popular notions under which the academic knowledge still lies when related to health matters. The speech marks, in this case, allows the perception that in the students’ talks there is a lack of community voices, visible from the common listening by the Women’s Group of the Solidary Socioeconomics that works in the neighborhood. This reception study, when identifying this silence, allows the organization of the program A Força da Mulher Solidária, an experience carried out by the women, who, moving around these “between-places”, give up the role of listeners and take on the role of producers of speech and meanings about life in the neighborhood. The methodological procedures combine consultations to reference books on the topic, especially Martín-Barbero and field research, through interviews, observation and interventions that occurred with the women’s program. The A Força da Mulher Solidária experience shows that, enriching the political sphere in the culture that weaves everyday life, the outskirts individual rises.
Esta pesquisa relata como se dá a produção do sujeito no espaço da periferia a partir das mediações de cotidiano, cultura, linguagem e educação. Partindo da análise dos programas radiofônicos Momento Saúde e A Força da Mulher Solidária, apresentados na Rádio Comunitária Edson Queiroz, no bairro do Dendê, em Fortaleza, elaboram-se os cenários discursivos sobre os quais se identifica como se erige, a partir do ambiente da emissora, o sujeito da periferia. O Momento Saúde, produção de estudantes do Curso de Enfermagem, assume um discurso de mão única, ao tratar das questões de saúde do bairro e deixa entrever na sua narrativa a concepção de popular sob a qual ainda repousa o saber acadêmico relacionado aos conteúdos de saúde. As marcas discursivas, neste caso, possibilitam perceber que nas falas das estudantes há uma ausência das vozes da comunidade, visíveis a partir da escuta coletiva pelo Grupo de Mulheres da Socioeconomia Solidária que atua no bairro. Este estudo de recepção, ao identificar esse silenciamentos, possibilita a organização do programa A Força da Mulher Solidária, experiência realizada pelas mulheres, que, ao se moverem nesse “entre-lugares”, saem de condição de ouvintes para o de produtoras de um discurso e de sentidos sobre a vida no bairro. Os procedimentos metodológicos combinam consultas às obras de referências sobre a temática, especialmente de Martín-Barbero, e pesquisa de campo, mediante entrevistas, observações e intervenção ocorrente com a criação do programa das mulheres. A experiência de A Força da Mulher Solidária mostra que, valorizando a dimensão do político no cultural no tecido da vida cotidiana, se erige o sujeito na periferia.