Contention resolution coordinates access to a shared communication channel divided into synchronized slots. For any fixed slot, a packet can be sent, leading to three outcomes: empty (no packet sent), successful (one packet sent), or collision (multiple packets sent). Each slot provides ternary feedback: empty, successful, or collision. Much of the prior work has mainly focused on optimizing the makespan, the number of slots needed for all packets to succeed. However, in many modern systems, collisions also incur time costs, which existing algorithms do not address. In this thesis, we design and analyze a randomized contention-resolution algorithm, Collision-Evasion Backoff, that optimizes both the makespan and the cost of collisions. In our research, �� ≥ 2 packets are initially present in the system, and each collision has a known cost C, where 1 ≤ C ≤ ���� for a known ��. With error probability polynomially small in ��, Collision-Evasion Backoff guarantees that all packets succeed with makespan �� (��√C log(��)) and a total expected collision cost of �� (��√C log2 (��)).

Cette thèse traite de l'utilisation des réseaux locaux sans fil dans un environnement industriel. Nous traitons l'impact des conditions de propagation et leur implémentation, sur des outils de simulations. La première partie s'intéresse au choix du modèle par des méthodes analytiques appliquées sur des mesures. La comparaison des performances obtenues dans un site avec les résultats de simulations montre une nette différence. Elle nous a permis de conclure que les modèles classiques ne permettent pas de simulations pertinentes pour un tel contexte. Pour ces raisons, nous proposons une nouvelle façon de modéliser les conditions de propagation. Notre modèle appelé "split model" permet de distinguer : liens entre stations et point d'accès des liens entre stations. Nous avons utilisé le modèle dans la simulation pour étudier les performances dans une cellule en mode infrastructure de la norme 802.11. Les résultats montrent que des collisions au niveau du point d'accès sont constatées et en résulte une dégradation des performances pour laquelle les mécanismes prévus pour compenser l'effet du terminal caché (RTS/CTS) se sont montrés inefficaces. L'utilisation du split model dans un processus de simulation met en avant les effets dus a l'existence de ces zones cachées et permet d'avoir des résultats obtenus par simulation plus représentatifs du comportement d'une cellule recouvrant une chaîne de production.

Submitted by PPG Psicologia (psicologia-pg@pucrs.br) on 2018-05-08T17:54:36Z No. of bitstreams: 1 ANELISE_MEURER_RENNER_DIS.pdf: 1931223 bytes, checksum: 27b7ec1cd55fac83edc5932ba7fad753 (MD5) / Approved for entry into archive by Caroline Xavier (caroline.xavier@pucrs.br) on 2018-05-14T14:01:07Z (GMT) No. of bitstreams: 1 ANELISE_MEURER_RENNER_DIS.pdf: 1931223 bytes, checksum: 27b7ec1cd55fac83edc5932ba7fad753 (MD5) / Made available in DSpace on 2018-05-14T14:05:54Z (GMT). No. of bitstreams: 1 ANELISE_MEURER_RENNER_DIS.pdf: 1931223 bytes, checksum: 27b7ec1cd55fac83edc5932ba7fad753 (MD5) Previous issue date: 2018-03-05 / Postpartum Depression (PPD) has a negative effect on newborns and their mothers, and impairments to the mother-infant relationship seem to be harmful to the child?s development. Despite the high prevalence of PPD in Brazil, there are no evaluation protocols and interventions recognized by the country?s unified health service. In order to contribute to an intervention adapted to Brazilian cultural issues and the reality of Brazilian mothers in the postpartum period, two studies were carried out in this dissertation - a theoretical study and an empirical study. The theoretical study aimed to describe two intervention protocols and the respective materials necessary for their execution: a psychoeducation protocol and a training protocol for facial expression recognition. The methodology applied the following steps: (1) state of the art review, (2) preliminary proposal preparation, (3) specialized psychologists? analysis, (4) pilot study. The study?s resulted in a psychoeducational protocol composed by seven themed primers defining subjects to be addressed with the mothers, in addition to a facial expression training protocol composed by six instruments. The empirical study?s objective was to investigate the effectiveness of both interventions (the psychoeducation and the facial expression training protocol) in the quality of mother-infant interaction. Preliminary results are described in this study, The sample consisted of 14 dyads in which the mothers were diagnosed with PPD by both the EPDS (cut-off point ?11) and SCID. Dyads were assessed between four and twelve weeks postpartum and were randomized into three conditions: psychoeducation, facial expression training, and waiting list. The results suggested a significant effects of the training groups in maternal ability to recognize anger faces, and a significant effect of the Psychoeducation group on mother-child interaction (proximity and relaxation dimensions). Compared to the waiting list, the two intervention groups produced positive effects, albeit only the Psychoeducation group had an effect on the target primary outcome. Therefore, results suggest that psychoeducation was more effective in increasing the quality of the mother-infant relationship when compared to the other two groups. Further studies with a larger sample size and longer follow-up period are required to investigate these effects further. / A Depress?o P?s-Parto (DPP) tem efeitos negativos na sa?de da m?e e do beb? e na rela??o m?e-beb? e os preju?zos nesta rela??o parecem ser mediadores importantes dos preju?zos no desenvolvimento infantil. Apesar da alta preval?ncia de DPP no Brasil, n?o existem protocolos de avalia??o e interven??es reconhecidos pelo Servi?o ?nico de Sa?de. Buscando contribuir com uma interven??o adaptada ?s quest?es culturais brasileiras e a realidade das m?es no per?odo p?s-parto, foram realizados dois estudos nesta disserta??o, sendo um estudo te?rico e um estudo emp?rico. O estudo te?rico visou descrever a elabora??o de dois protocolos de interven??o e os respectivos materiais necess?rios para a execu??o destes: um protocolo de psicoeduca??o e um protocolo de treinamento de reconhecimento de express?es faciais. A metodologia utilizada seguiu os seguintes passos: (1) revis?o da literatura, (2) elabora??o da proposta preliminar, (3) an?lise de psic?logas especialistas, (4) estudo piloto. Os resultados deste estudo s?o um protocolo de psicoeduca??o com sete cartilhas sobre as tem?ticas definidas para serem trabalhadas com as m?es, al?m de um protocolo de treinamento de express?es faciais composto por seis instrumentos para a execu??o deste. A partir desta constru??o, o estudo emp?rico teve como objetivo investigar a efetividade das interven??es, tanto de psicoeduca??o quanto de treinamento de express?es faciais no implemento da qualidade da rela??o m?e-beb?. A presente proposta apresenta os dados preliminares do estudo. A amostra foi composta de 14 d?ades, tendo as m?es diagn?stico de DPP pela EPDS (ponto de corte ?11) e pela SCID. As d?ades iniciaram a avalia??o entre quatro e doze semanas ap?s o parto e foram randomizadas em tr?s condi??es: psicoeduca??o, treinamento de express?es faciais e lista de espera. Os resultados apontam efeitos positivos do aumento da acur?cia do reconhecimento de faces de raiva do grupo de treinamento, e um efeito positivo nas dimens?es maternas de intera??o proximidade e descontra??o no grupo de Psicoeduca??o. Em compara??o com a lista de espera, os dois grupos de interven??o apresentaram efeitos positivos, ainda que apenas o grupo Psicoeduca??o tenha apresentado efeitos significativos no desfecho prim?rio. Assim, os resultados preliminares sugerem a psicoeduca??o como mais eficaz no aumento qualidade da rela??o m?e-beb? ao comparada com os outros grupos de interven??o. S?o necess?rios futuros estudos com um aumento do tamanho amostral e realiza??o de follow-ups com mais tempo ap?s as sess?es para ser poss?vel confirmar os efeitos encontrados.

Submitted by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-11-22T12:46:29Z No. of bitstreams: 1 LeslyG.VicenzideOliveiraTese2017.pdf: 2430861 bytes, checksum: 657fb0addb4aa62025d73dd498b17e46 (MD5) / Approved for entry into archive by Sara Ribeiro (sara.ribeiro@ucb.br) on 2017-11-22T12:46:50Z (GMT) No. of bitstreams: 1 LeslyG.VicenzideOliveiraTese2017.pdf: 2430861 bytes, checksum: 657fb0addb4aa62025d73dd498b17e46 (MD5) / Made available in DSpace on 2017-11-22T12:46:50Z (GMT). No. of bitstreams: 1 LeslyG.VicenzideOliveiraTese2017.pdf: 2430861 bytes, checksum: 657fb0addb4aa62025d73dd498b17e46 (MD5) Previous issue date: 2017-06-23 / The doctoral thesis aimed at presenting the development of the mother-baby attachment in prison anchored on the care provided by mothers, intertwined by their history and the impact of the closer social relations, namely: other women inmates, visitors and prison officers. Despite the growing increase in the Brazilian female prison population, there is little research interested in the relation to the Mother-Baby Attachment within the Prison System. Bolwby's theory of attachment was used as the theoretical foundation. To understand the field of study, the realated literature was reviewed on: development and attachment of young children; Mother-baby attachment in prison; and interventional proposals related to the development of mother-child attachment. Four women imprisoned in the Federal Disctrict (DF) Women's Penitentiary were followed up for a little more than a year, from their pregnancy to the subsequent delivery of the babies from the prison environment. The following were applied: Adult Attachment Scale-R (AAS-R); Maternal-Fetal Attachment Scale (MFAS); Factorial scale of neuroticism (EFN); Perceived Maternal Parenting Self- Efficacy (PMP SE); Edinburgh Postpartum Depression Scale (EPDS). Five semi-structured interviews were carried out and a systematic checklist of baby development (Checklist) was used, as well as the reading of court records and the field diary. The results showed that the practice of child-care is anchored on rules passed down family generations, but in the Prison System they have impacts: both positive when their rules cover in a certain way matters related to mothering (orientations received) and the withdrawal of social vulnerability; As well as negative in what affects the way in which the mother's monitoring of her baby is exercised, which generates anxiety, insecurity and consequently the possibility of the development of insecure attachment in the baby. It is proposed to know and ponder the various interventions and results found in the area of maternal attachment and consequent development of the child to implement interventions in the prison system. In addition to making changes in the way to structure activities for women who live with their babies in jail with a view to enabling them to stay with their babies in the longer term which may favor safe attachment. / A tese teve por objetivo apresentar o desenvolvimento do apego m??e-beb?? no c??rcere, a partir dos cuidados prestados por elas, entrela??ados por suas hist??rias e as intera????es sociais de outras mulheres presas, visitantes e os (as) agentes carcer??rios (as). Apesar do crescente aumento da popula????o carcer??ria feminina brasileira, existem poucas pesquisas que se interessam pela rela????o de Apego M??e-Beb?? dentro do Sistema Prisional. Utilizou-se como fundamenta????o a teoria do apego de Bolwby. Para compreens??o do campo de estudo, fez-se revis??o da literatura sobre desenvolvimento e apego de crian??as pequenas e apego m??e-beb?? na pris??o. Participaram quatro di??des de m??es-beb??s custodiadas na Penitenci??ria Feminina do DF, desde a gravidez at?? posterior sa??da do beb?? do ambiente prisional durante 12 meses. Foram aplicadas: Escala de Vincula????o do Adulto (EVA); Escala de Apego Materno Fetal (MFAS); Escala Fatorial de Neuroticismo (EFN); Avalia????o da Autoefic??cia Materna Percebida (PMP S-E); Escala de Depress??o P??s-Parto de Edimburgo (EPDS). Foram realizadas cinco entrevistas semiestruturadas, e utilizado um roteiro de observa????o sistem??tica do desenvolvimento do beb?? (Checklist), bem como a leitura dos prontu??rios judiciais e o di??rio de campo. Os resultados mostraram que o exerc??cio de cuidados est?? ancorado nas regras passadas atrav??s das gera????es familiares, mas que no Sistema Prisional essas pr??ticas possuem impactos: tanto positivo, quando suas regras amparam de certo modo quest??es ligadas ?? maternagem (orienta????es recebidas); quanto negativo, no que impacta na forma como ?? exercida a monitoria da m??e para com seu beb??, o que gera ansiedade, inseguran??a e consequentemente a possibilidade do desenvolvimento do apego inseguro no beb??. Sugere-se mudan??as na forma de estruturar atividades para mulheres que convivem com seu beb?? no c??rcere, com vistas a possibilitar que ela possa cuidar melhor do beb?? para favorecer o apego seguro e desenvolvimento afetivo, cognitivo e social da crian??a.

Made available in DSpace on 2014-12-17T14:13:42Z (GMT). No. of bitstreams: 1 LuciaMGT.pdf: 344621 bytes, checksum: fd0b08fe5dd11a7ae8ac6178df3cb858 (MD5) Previous issue date: 2009-06-16 / Trata-se de um estudo de delineamento transversal de car?ter multidisciplinar, o qual conta com um estat?stico que contribuiu para o delineamento do estudo, realizando o c?lculo amostral e contribuindo efetivamente para an?lise dos dados e alunos de psicologia e pediatrias que contribu?ram para a coleta de dados. A literatura aponta que a transmiss?o inadequada do diagn?stico da S?ndrome de Down pode prejudicar o v?nculo m?e-beb? e o posterior desenvolvimento da crian?a. Sendo assim, este estudo objetivou analisar os sentimentos maternos frente a este diagn?stico, verificando diferentes formas de transmiss?o e poss?veis facilitadores da aceita??o da S?ndrome. A amostra foi constitu?da por 20 m?es cujos filhos apresentam S?ndrome de Down, na faixa et?ria de 0 ? 03 anos e que recebem atendimento em ambulat?rio de um Hospital Universit?rio de Pediatria. Para coleta dos dados fez-se uso de um question?rio, ap?s a assinatura do Termo de Consentimento Livre e Esclarecido. Os dados foram analisados atrav?s de dois softwares de processamento de dados, o SPSS e o ALCESTE (An?lise Lexical por Contexto de um Conjunto de Segmento de Texto). Os dados indicaram que 90% das m?es receberam o diagn?stico de S?ndrome de Down depois do parto. 75% dos diagn?sticos foram comunicados pelo m?dico pediatra e 15% pelas enfermeiras. As m?e referiram que o diagn?stico foi tardio, inadequado e insuficiente no informativo. Observouse que as entrevistadas viveram os mesmos sentimentos observados na literatura como: choque, nega??o, tristeza e ira, adapta??o e reorganiza??o. Tais resultados permitem concluir que o diagn?stico de SD nas m?es investigadas foi em sua maioria tardio, realidade comum no Brasil, principalmente quando se trata de classes econ?micas baixas. As m?es apontam que percebem este diagn?stico como tardio, inadequado e insuficiente no informativo, e gera sentimentos que a literatura j? cita como comuns frente a esse tipo de diagn?stico. Portanto, observamos que a not?cia pode ser um fator que dificulte ou facilite o estabelecimento do v?nculo m?e-beb?, comprometendo a busca de recursos para o desenvolvimento da crian?a

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-01-27T12:12:09Z No. of bitstreams: 1 AdrianaDeOliveira_TESE.pdf: 3140979 bytes, checksum: 4bce9410ffcecc38cc78cc27150e924d (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-01-27T14:34:14Z (GMT) No. of bitstreams: 1 AdrianaDeOliveira_TESE.pdf: 3140979 bytes, checksum: 4bce9410ffcecc38cc78cc27150e924d (MD5) / Made available in DSpace on 2017-01-27T14:34:14Z (GMT). No. of bitstreams: 1 AdrianaDeOliveira_TESE.pdf: 3140979 bytes, checksum: 4bce9410ffcecc38cc78cc27150e924d (MD5) Previous issue date: 2016-08-12 / Trata-se de uma pesquisa multi-m?todos e tem por objetivo geral estudar o estabelecimento da rela??o m?e e beb? e construir um instrumento de verifica??o deste a partir da perspectiva materna. A tese est? composta por 3 estudos, o primeiro buscou caracterizar o conte?do da percep??o das m?es sobre a rela??o m?e e beb?, por meio de seis entrevistas em profundidade com m?es de distintas escolaridades. Os conte?dos das entrevistas foram tratados pela An?lise Lexical do software Alceste, verificando-se tr?s classes, 55% (classe 1), 26% (classe 2) e 19% (classe 3) do corpus, que sugerem um foco de aten??o voltado aos cuidados b?sicos; podendo ser a escolaridade materna um fator interveniente na maternagem e na din?mica da m?e com seu beb?, influenciando tanto a narrativa de estilo do la?o quanto a forma do cuidado. No estudo 2 o objetivo foi elaborar e construir um instrumento para avaliar a rela??o m?e e beb? a partir da perspectiva materna. Partiu-se de fontes te?rico-emp?ricas com o prop?sito de identificar e caracterizar o construto La?o M?e e Beb? nos aspectos din?mico-relacionais. Elaborou-se um instrumento de 92 itens com alternativas dicot?micas administrado ? m?es de beb?s de at? 18 meses. Os resultados geraram um instrumento que contempla as principais manifesta??es do desenvolvimento infantil em 4 per?odos de 0 a 18 meses. O estudo 3 buscou verificar por meio da An?lise de Componentes Principais (PAF) a estrutura fatorial do instrumento e evidenciou-se 34 fatores sobre os processos de desenvolvimento infantil e a percep??o materna destes. Apesar de os fatores gerados serem promissores, optou-se em manter as dimens?es te?ricas inicialmente propostas que serviram de matriz para a organiza??o dos itens. A confiabilidade apresentou um ?ndice aceit?vel para o question?rio relativo ao beb? (KR-20 0,92) e para as quest?es pertinentes a m?e (KR-20 0,71). Como conclus?o tem-se a possibilidade da sequ?ncia deste trabalho, com vistas a ulteriores investiga??es, a fim de vir a ser efetivamente utilizado como um instrumental para a interven??o precoce. / This is a multi-methods research, with the objective of studying the establishment of the mother and baby relationship, and build a verification tool of it from the maternal perspective. The thesis is composed by three studies: the first one aimed to characterize the content of the mothers' perception about the relationship between mother and baby, through six interviews with mothers of different educational attainment. The contents of the interviews were treated by Lexical Analysis of the Alceste software, verifying three classes, 55% (Class 1), 26% (Class 2) and 19% (class 3) of the corpus, suggesting a focus of attention on the basic care. The maternal educational attainment may be an intervening factor in motherhood, and in the mother?s dynamics with her baby, influencing both the bond narrative style as the form of care. In the second study, the objective was to design and build an instrument to assess the mother and child relationship from the maternal perspective. One started from theoretical and empirical sources in order to identify and characterize the construct Mother and Baby Bond in dynamic-relational aspects. One developed an instrument of 92 items with dichotomous alternatives given to mothers of babies up to 18 months. The results generated an instrument that includes the main manifestations of child development in four periods from zero to 18 months. The third study sought to verify, through the Principal Component Analysis (PAF), the factor structure of the instrument highlighting 34 factors about the child development processes, and their maternal perception. Although the generated factors are promising, it was decided to maintain the theoretical dimensions originally proposed that served as headquarters for the organization of items. Reliability presented an acceptable index for the questionnaire concerning the baby (KR- 20 0.92) and the relevant issues to mother (KR-20 0.71). As conclusion, there is the possibility of following this work, with a view to further researches, in order to come to be effectively used as an instrument for early intervention.

Made available in DSpace on 2015-04-14T14:23:36Z (GMT). No. of bitstreams: 1 388463.pdf: 1771658 bytes, checksum: 3426a725cf9183bc9e77d47960e4bc03 (MD5) Previous issue date: 2007-01-15 / Este estudo teve como objetivo verificar aspectos do desenvolvimento do beb? com defici?ncia visual e seu atendimento em interven??o precoce. Os sentimentos e a rela??o das m?es com seu beb? tamb?m ocuparam um espa?o privilegiado nesta pesquisa, em raz?o do importante papel que estas desempenham durante o processo de desenvolvimento infantil. Para a realiza??o desta investiga??o, optou-se pela pesquisa qualitativa, envolvendo estudo de caso, para a qual foram entrevistadas sete m?es de crian?as deficientes visuais e tr?s profissionais capacitados para o trabalho de interven??o precoce com beb?s que apresentam esta defici?ncia. A an?lise dos discursos dos entrevistados foi realizada a partir da metodologia direcionada para este fim, na qual os depoimentos foram organizados em categorias e subcategorias. A inter-rela??o dos dados coletados, possibilitada pela an?lise textual qualitativa, permitiu o confronto com a fundamenta??o te?rica, confirmando algumas quest?es apresentadas pelos autores pesquisados. A conclus?o apresenta respostas ?s quest?es norteadoras, definidas no in?cio desta pesquisa, e finaliza com algumas sugest?es para a melhoria do trabalho de interven??o oferecido ? popula??o. Esperamos que os resultados desta pesquisa possam contribuir definitivamente para a melhoria da qualidade de vida dos beb?s deficientes visuais e suas fam?lias, pela possibilidade do aproveitamento destes estudos no planejamento de servi?os de interven??o precoce

Made available in DSpace on 2016-04-04T18:28:20Z (GMT). No. of bitstreams: 1 ANDRE OLIVEIRA SILVA.pdf: 630390 bytes, checksum: aff85d8a1d3ee76ffaea477c6649a80c (MD5) Previous issue date: 2015-02-09 / This research aims at investigating psychoanalytically a psychologist's role at a baby shelter, taking into consideration that environmental care is paramount in the early stages of human development. It discusses a problem that proves relevant from clinical, psychosocial and ethical perspectives, since it focuses on the future and well-being of dependent humans who are part of the next generation. Research was based on an operationalization strategy of the psychoanalytical method for empirical research. Our object of study is the experience of working directly with babies in institutional shelters, and this experience was registered in the form of a autobiographic transferential narrative written after the experience, and which included not only facts, but also countertransferential impact and the researcher's reflections. The narrative was then psychoanalytically interpreted as means of allowing the interpretative production of two affective-emotional or subconscious meaning fields: "Helping" and "Hindering". There was a movement between these two fields as the psychologist intervened with direct care, failing to meet institutional expectations which included a fantasy of dealing with the issues without affecting the institution's routine and the idea that concrete problems would be dealt with comprehensively. This movement is analyzed reflexively using Winnicott's concept of failure, a possible occurrence that contains both rights and wrongs. In conclusion, the paradoxical nature of this work might help expand the understanding of the limits and the range of the psychologist's role in the field of social work in general and, more specifically, in the care of shelter babies. / A presente pesquisa tem como objetivo investigar psicanaliticamente a inser??o do psic?logo em abrigo institucional que atende beb?s, a partir do reconhecimento de que a provis?o de cuidados ambientais, nas fases iniciais do desenvolvimento humano, ? fundamental. Incide sobre problema relevante desde perspectivas cl?nicas, psicossociais e ?ticas, na medida em que se articula a partir de preocupa??o como bem estar e futuro de pessoas dependentes que integrar?o as pr?ximas gera??es. O trabalho organizou-se ao redor de uma estrat?gia de operacionaliza??o do m?todo psicanal?tico para realiza??o de pesquisas emp?ricas. O acontecer cl?nico constituiu-se a partir de experi?ncia de trabalho direto com beb?s em abrigos institucionais, que foi registrada sob a forma de uma narrativa transferencial de car?ter autobiogr?fico. A elabora??o do texto narrativo deu-se posteriormente ? experi?ncia, incluindo tanto ocorr?ncias fatuais como impactos contratransferenciais e reflex?es do psic?logo/pesquisador. A seguir, a narrativa foi interpretada psicanaliticamente, permitindo a produ??o interpretativa de dois campos de sentido afetivo-emocional ou inconscientes relativos: Solucionando e Atrapalhando . Ficou constatado um tr?nsito entre campos, que certamente deriva da interven??o do psic?logo, que, ao assumir cuidados diretos, deixa de atender ?s expectativas institucionais, tanto no registro fantasioso de solucionar a quest?o sem afetar as rotinas, como no sentido de n?o lidar de modo compreensivo com as dificuldades concretas. O trabalho finaliza com interlocu??es reflexivas, que focalizam o tr?nsito entre campos para pens?-lo como falha no sentido winnicottiano do termo, vale dizer, como o acontecer poss?vel, que cont?m em si, simultaneamente, acertos e desacertos. Conclui-se que, por sua via paradoxal, aqui se completa uma produ??o que pode contribuir significativamente para uma maior compreens?o dos limites e alcances da atua??o do psic?logo no campo da assist?ncia social em geral e, mais especificamente, no campo do cuidado a beb?s abrigados.

Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2017-04-07T19:37:44Z No. of bitstreams: 1 ELIZABETH BROWN VALLIM BRISOLA.pdf: 1755411 bytes, checksum: 14e7e25a069f401ef775a5d9ce3844f5 (MD5) / Made available in DSpace on 2017-04-07T19:37:44Z (GMT). No. of bitstreams: 1 ELIZABETH BROWN VALLIM BRISOLA.pdf: 1755411 bytes, checksum: 14e7e25a069f401ef775a5d9ce3844f5 (MD5) Previous issue date: 2017-02-14 / Research studies that address mothers singing focus on investigating how and why songs facilitate mother-infant communication considering, especially, the acoustical and sociocultural aspects involved. This qualitative and exploratory research study was developed based on Edmund Husserl?s phenomenology and guided by principles of Humanistic psychology, specifically Carl Roger?s Person Centered Approach. It aimed to apprehend the experience of 13 mothers who gave birth to their first child during the past 18 months, about the meaning of singing to their infants. The researcher spoke to each of the participants, all with a college education, during a dialogical encounter, and immediately afterwards wrote a comprehensive narrative to register her comprehension regarding that mother?s experience, based on her own impressions. A narrative-synthesis and a creative synthesis were constructed based on the narratives to enable a phenomenological process of analysis that presupposes three phases: description, comprehension and interpretation of the experience. The structural elements that emerged from the mothers' experience of singing to their infants are: (a) a means of communication hugging their infant with their song; (b) the establishment of an emotional bond with their infant; (c) a way to better know their infant as it develops; (d) a means of recognizing themselves as mothers; (e) a form of sharing personal values and family customs; (f) a creative way of expressing themselves, and (g) a possibility of personal growth. The meaning of this experience enables further reflections regarding human relationships from a psychological viewpoint and can stimulate dialogues with other areas of knowledge. / Las pesquisas que abordan el canto materno se preocupan en investigar c?mo y por qu? las canciones son facilitadoras de la comunicaci?n madre-beb?, dando atenci?n principalmente a los aspectos ac?sticos y socioculturales. Esta pesquisa, cualitativa y de naturaleza exploratoria, fue desarrollada con base en la fenomenolog?a de Edmund Husserl y en orientaciones te?ricas de la psicolog?a humanista, m?s espec?ficamente del Enfoque Centrado en la Persona, de Carl Rogers. Su foco fue aprender de la experiencia de 13 madres que tuvieron su primer hijo en los ?ltimos 18 meses sobre el sentido de cantarle a su beb?. La investigadora convers? com cada participante, mujeres universitarias, durante un encuentro dial?gico, y escribi?, de inmediato, una narrativa comprensiva para registrar su comprensi?n sobre la experiencia de aquella madre a partir de sus propias impresiones. Una s?ntesisnarrativa y una s?ntesis creativa fueron construidas a partir del conjunto de narrativas de manera que sea posible concluir el proceso de an?lisis fenomenol?gico que supone tres fases: descripci?n, comprensi?n e interpretaci?n de la experiencia. Los elementos estructurales que emergieron de las vivencias de las madres sobre cantarles a sus beb?s son: (a) un modo de comunicarse abrazando al beb? con sus sonidos; (b) la construcci?n de un v?nculo; (c) una forma de conocer mejor a su beb? a medida que ?ste se desarrolla; (d) un reconocimiento de s? misma como madre; (e) una manera de transmitir valores personales y costumbres familiares; (f) un modo creativo de expresarse; e (g) la posibilidad de crecimiento personal. El sentido de esta experiencia posibilita nuevas reflexiones sobre el tema de la relaci?n humana en t?rminos psicol?gicos y puede estimular interlocuciones con otras ?reas de conocimiento. / As pesquisas que abordam o cantar materno preocupam-se em investigar como e por que as can??es s?o facilitadoras da comunica??o m?e-beb?, dando aten??o principalmente aos aspectos ac?sticos e socioculturais. Esta pesquisa, qualitativa e de natureza explorat?ria, foi desenvolvida com base na fenomenologia de Edmund Husserl e em norteadores te?ricos da psicologia humanista, mais especificamente da Abordagem Centrada na Pessoa, de Carl Rogers. Objetivou apreender a experi?ncia de 13 m?es que tiveram seu primeiro filho nos ?ltimos 18 meses sobre o sentido de cantar para seu beb?. A pesquisadora conversou com cada uma das participantes, todas com forma??o universit?ria, durante um encontro dial?gico, e escreveu, em seguida, uma narrativa compreensiva para registrar sua compreens?o sobre a experi?ncia daquela m?e a partir de suas pr?prias impress?es. Uma narrativa-s?ntese e uma s?ntese criativa foram constru?das a partir do conjunto de narrativas de forma a possibilitar concluir o processo de an?lise fenomenol?gica que sup?e tr?s fases: descri??o, compreens?o e interpreta??o da experi?ncia. Os elementos estruturais que emergiram das viv?ncias das m?es sobre cantar para seu beb? s?o: (a) um modo de comunicar-se abra?ando o beb? com seus sons; (b) a constru??o de um v?nculo; (c) uma forma de conhecer melhor seu beb? ? medida que ele se desenvolve; (d) um meio de reconhecer a si mesma como m?e; (e) uma maneira de transmitir valores pessoais e costumes familiares; (f) um modo criativo de expressar-se; e (g) a possibilidade de crescimento pessoal. O sentido desta experi?ncia possibilita novas reflex?es sobre o tema do relacionamento humano em termos psicol?gicos e pode estimular interlocu??es com outras ?reas de conhecimento.

Concern regarding sustainability and climate change is increasing, which is forcing countries world-wide to take action. The Swedish government has set a goal of fossil-free tra_c until 2030. Battery Electric Buses (BEB) might be one of the solutions needed in order to reach this goal. However, currently its prevalence is at an early stage.   The purpose of this study is to investigate how the technological transition towards BEBs in Sweden a_ects the public transport operators (PTOs). Moreover, to investigate how a third party service provider of Fleet Management System (FMS) services can support the PTOs in this transition.   The research has been carried out in co-operation with a PTO and a FMS service provider. The research contributes to their current understanding of how they will be a_ected by the emerging technological transition. This thesis also contributes with new empirical data of the technological transition towards electric vehicles within public bus transport, seen as a Large Technical System. Conceptually it contributes, by exploring how external companies can support the technological transition towards BEBs, with the application of Technological Transitions theory and the Multi Layer Perspective framework.   The methodology used is a case study of the technological transition towards BEBs in Sweden. Data was collected through twelve semi-structured interviews with researchers, PTOs, public transport authorities (PTA), a BEB manufacturer and a FMS-service company. Parallel to this a questionnaire was distributed to the twenty largest PTOs in Sweden. Moreover data was collected from company visits, pilot-project results and internal documentation.   Our findings show that there are thirteen perceived barriers present among the PTOs, in the process of BEB adoption. Six of these barriers relate to component aspects of BEBs, and seven relate to managerial aspects. Perceived barriers linked to component aspects of BEBs are; Variation in solutions and lack of technical standards, the Charging infrastructure, Shorter range or decreased load capacity, Unknown functionality in cold climate, Reliability and Durability. Perceived barriers linked to managerial aspects of BEBs are; Lack of knowledge and experience, Behavioral change, Economy, Maintenance, Ownership of infrastructure and buses, Business models and Varying requirements from PTAs. The barriers FMS-service providers can address are primarily, due to the technological nature of the services, present at niche level. PTOs together with FMS-service providers are encouraged to together strive towards gaining deeper knowledge about the new emerging echnologies. Through this, PTOs could be enabled to overcome the aforementioned barriers. Three reverse salients were also identi_ed, linked to the aforementioned barriers. If the everse salients are assessed, BEB acceptance among PTOs could be increased. The three identi_ed reverse salients are, the battery technology, the charging infrastructure and the contracts/ownership. The co-operation with the commissioning PTO and FMS-service provider has led to valuable access to Swedish public transport actors, and has aided in a deeper understanding of the phenomena. Although, this co-operation might have exposed us to a risk of being influenced.