Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2015-12-14T21:34:11Z No. of bitstreams: 1 SueilhaFerreiraDeAndradeDePaula_DISSERT.pdf: 2031860 bytes, checksum: 1cd1be4d1cd9390854369cac616d8466 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2015-12-15T22:03:32Z (GMT) No. of bitstreams: 1 SueilhaFerreiraDeAndradeDePaula_DISSERT.pdf: 2031860 bytes, checksum: 1cd1be4d1cd9390854369cac616d8466 (MD5) / Made available in DSpace on 2015-12-15T22:03:32Z (GMT). No. of bitstreams: 1 SueilhaFerreiraDeAndradeDePaula_DISSERT.pdf: 2031860 bytes, checksum: 1cd1be4d1cd9390854369cac616d8466 (MD5) Previous issue date: 2014-08-28 / Neste trabalho, os medicamentos de refer?ncia, gen?rico e similar com os princ?pios ativos ?cido Acetil Salic?lico, Paracetamol, captopril, hidroclorotiazida e mebendazol foram adquiridos em farm?cias locais e estudados por Termogravimetria (TG) e Calorimetria Explorat?ria Diferencial (DSC). A decomposi??o t?rmica foi avaliada objetivando obter a partir do M?todo de Ozawa a energia de ativa??o, em atmosfera inerte (de nitrog?nio), utilizando tr?s raz?es de aquecimento distintas (5, 10 e 20 oC min-1). A formula??o farmac?utica do AAS de refer?ncia foi o ?nico que apresentou perfil termogravim?trico diferente dos demais (gen?rico e similar) indicando, provavelmente intera??o entre os excipientes e o princ?pio ativo. Foi observado no gr?fico do log da raz?o de aquecimento pelo inverso da temperatura que n?o houve linearidade dos dados, isto ?, n?o houve correla??o entre os percentuais de perda de massa e a energia de ativa??o envolvida na decomposi??o t?rmica da formula??o farmac?utica do AAS de refer?ncia. A an?lise por calorimetria explorat?ria diferencial foi realizada em atmosfera de nitrog?nio, com raz?o de aquecimento de 10?C min-1. Na an?lise destes mesmos medicamentos, os dados das curvas encontradas sobre o ponto de fus?o foram, exceto para a hidroclorotiazida, s?o condizentes com a literatura. A hidroclorotiazida apresentou um ponto de fus?o bastante inferior ao encontrado na literatura, o que pode ser justificado devido ? intera??o do princ?pio ativo com o excipiente lactose. No estudo da pureza, utilizando a equa??o de Van?t Hoff , os medicamentos de hidroclorotiazida de refer?ncia e mebendazol de refer?ncia, gen?rico e similar apresentaram teor de impureza acima do limite estabelecido nesta equa??o que deve ser superior a 2,5 % mol. / In this work, the reference drugs, generic and similar to the active ingredients acetylsalicylic acid, paracetamol, captopril, hydrochlorothiazide and mebendazole were purchased from local pharmacies and studied by thermogravimetry (TG) and Differential Scanning Calorimetry (DSC). Thermal decomposition was assessed to obtain from the Ozawa method the activation energy in inert atmosphere (nitrogen), using three different heating ratios (5, 10 and 20 o C min-1). The pharmaceutical formulation of the AAS reference was the one who presented different from the others (generic and similar) Thermogravimetric profile indicating likely interaction between the active ingredient and excipients. Was observed at the heating rate of the inverse temperature that no linearity of the data, ie, there was no correlation between the percentage of mass loss and the activation energy involved in the thermal decomposition of the pharmaceutical formulation of the AAS reference log graph. The analysis by differential scanning calorimetry was performed in nitrogen atmosphere with a heating rate of 10 ? C min-1. In the analysis of these same drugs, the data curves found on the melting point were, except for hydrochlorothiazide, are consistent with the literature. Hydrochlorothiazide presented a melting point well below that found in the literature, which may be justified due to the interaction of the active ingredient with the excipient lactose. In the study of purity, using the Van't Hoff equation, the reference drugs hydrochlorothiazide and mebendazole reference generic and showed similar impurity content below the limit established that this equation must be greater than 2.5 mol%

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-02-20T21:14:31Z No. of bitstreams: 1 FranciscoDiogoOliveiraDeQueiroz_DISSERT.pdf: 2384075 bytes, checksum: 6637cd90d60ea8666ced83de9d255a5f (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-02-23T00:25:27Z (GMT) No. of bitstreams: 1 FranciscoDiogoOliveiraDeQueiroz_DISSERT.pdf: 2384075 bytes, checksum: 6637cd90d60ea8666ced83de9d255a5f (MD5) / Made available in DSpace on 2017-02-23T00:25:27Z (GMT). No. of bitstreams: 1 FranciscoDiogoOliveiraDeQueiroz_DISSERT.pdf: 2384075 bytes, checksum: 6637cd90d60ea8666ced83de9d255a5f (MD5) Previous issue date: 2016-08-17 / Com a ascens?o da tecnologia m?vel nos ?ltimos anos, dispositivos como smartphones e tablets t?m se tornado parte integral da vida das pessoas. Como telefones tradicionais, os smartphones podem ser utilizados para realizar chamadas e mandar mensagens de texto, mas ? a possibilidade de fornecer variados tipos de aplica??es que os tornam t?o atrativos para seus usu?rios. Neste contexto, aplica??es Android tem se tornado cada vez mais populares; e no mesmo ritmo em que cresce o n?mero de aplica??es dispon?veis, tamb?m cresce o n?mero de usu?rios afetados pelos crashes de tais aplica??es. Para poder lidar com tais condi??es excepcionais, o c?digo para lan?amento e captura de exce??es n?o ? uma parte opcional mas uma parte fundamental de tais aplica??es. Por?m, o que se tem observado ? que o c?digo projetado para tratar estas condi??es excepcionais pode muitas vezes ser a causa de crashes (e.g., exce??es n?o capturadas). At? o momento nenhum estudo investigou as principais caracter?sticas do c?digo de tratamento de exce??es (TE) de aplica??es Android. Este trabalho apresenta um conjunto de estudos complementares para melhor entender as caracter?sticas do c?digo de TE de aplica??es Android assim como identificar a vis?o dos desenvolvedores a respeito destas caracter?sticas. Neste trabalho foram realizados tr?s estudos: (i) um estudo explorat?rio onde foram inspecionados o c?digo de TE de 15 aplica??es Android populares (o que no total correspondeu a 3490 blocos try-catch-finally); e (ii) dois estudos qualitativos baseados em t?cnicas de Teoria Fundamentada em Dados - nestes foram aplicados surveys a 28 desenvolvedores Android e 47 especialistas Android para levantar a opini?o dos mesmos sobre boas e m?s praticas no desenvolvimento do tratamento de exce??es no ambiente Android. Durante estes estudos observamos um grande n?mero de exce??es sendo silenciadas no c?digo de apps. Tamb?m observamos que poucas aplica??es enviavam informa??es as informa??es sobre as exce??es uncaught para servidores de crash report. / Along the recent years, we have witnessed an astonishing increase in the number mobile applications being developed and some of them becoming largely used. Such applications extend phones capabilities far beyond of the basic calls. In the same rate the number of a users increase, also increases the number of users affected by application faults and crashes. In this contexto, Android apps are becoming more and more popular. The number of such apps is astonishingly increasing in a daily rate, as well as the number of users affected by their crashes. Android apps as other Java apps may crash due to faults on the exception handling (EH) code (e.g. uncaught exceptions). Techniques for exception detection and handling are not an optional add-on but a fundamental part of such apps. Yet, no study has investigated the main characteristics of the EH code of mobile apps nor the developers perspective about the good and bad practices of EH in such context. In this work we conducted three complementary studies: (i) one that inspected the EH code of 15 popular Android apps (which overall comprises of 3490 try-catch-finally blocks); and two qualitative studies based an Grounded Theory techniques, on which two surveys were applied to 28 Adndroid developers and 47 Android experts respectively, to get their opinion about the good and bad practices of EH development in Android environment. Some outcomes of the studies show a high occurrence of exception swallowing and only few apps sending exception information to a remote server ? both considered by Android experts as bad practices that negatively impact the app robustness.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2017-10-09T21:51:42Z No. of bitstreams: 1 TESE_LUISA RAMOS.pdf: 12171909 bytes, checksum: dfd039e3c7457072b9d4c4c178c30162 (MD5) / Made available in DSpace on 2017-10-09T21:51:42Z (GMT). No. of bitstreams: 1 TESE_LUISA RAMOS.pdf: 12171909 bytes, checksum: dfd039e3c7457072b9d4c4c178c30162 (MD5) Previous issue date: 2015-01-10 / Amaranthaceae is a family of about 180 genera and 2,500 species, divided in 8 subfamilies, and distributed in tropical and temperate areas of both hemispheres. It represents the most species-rich lineage within the Caryophyllales. For Brazil are recognized 158 species in 27 genera, with three endemic, and most of them included in Gomphrenoideae.This subfamily includes two major Brazilian genera,Gomphrena with 45 species and Alternanthera with 36 species. Alternanthera is a monophyletic group of about 100 species of pantropical distribution, characterized by sessile or pedunculate axillaryinflorescences, with the partial inflorescence unit reduced to a single flower. Flowers are sessile or pedicellate, protected by a bract and two bracteoles, bisexual, with (4-)5 tepals, (4-)5 stamens, with fused filaments forming a basal tube, free towards the tube end and alternating with pseudo-staminodes.The latest revision of Alternanthera for Brazil dates backto that of the Flora Brasiliensis,of more than 160 years ago, fully justifyinga new revision, the principal objective of our thesis. It isdivided into four chapters, followingan introduction. Chapter 1 includes a morphological study of the Alternanthera species in Brazil, using 107 characters, of which 99 were considered informative and have been evaluated using DELTA, resulting in a description of vegetative and floral organs of Alternanthera,with the focuson the most important of them for the group's taxonomy anda discussionof their terminology.Chapter 2 isa study of the Alternanthera brasiliana complex of five species, using the statistical exploratory analysis. Only four species in the complexwere recognized, with a proposalto synonymize Alternanthera ramosissimatoA. brasiliana.Chapter 3 is the text of a paperon the new species Alternanthera catingae, submitted for publication in Phytotaxa. Chapter 4 is a revision of the Brazilian species of Alternanthera, based on the study of 1,900 specimens deposited in 19 herbaria and using the adopted typological species concept.In addition to the traditional revisionary methodology, modernanalytic tools were used inthe evaluation of species occurring in Brazil. We recognized 35 species, with one, A.catingae, new to science, synonymizedsix species, and made one new combination. The work should be an important contributionto the study of the Brazilian Amaranthaceae, especially in terms of reaching the objective of making the Flora of Brazil go online in 2020. / As Amaranthaceae constituem uma fam?lia com cerca de 180 g?neros e 2.500 esp?cies, com distribui??o nas faixas tropicais e temperadas dos dois hemisf?rios e representam a mais rica linhagem de esp?cies dentre as Caryophyllales. Inclui 8 subfam?lias . Para o Brasil s?o referidas 158 esp?cies distribu?das em 27 g?neros, dos quais tr?s s?o end?micos, grande parte desses g?neros s?o inclu?dos em Gomphrenoideae. Esta subfam?lia inclui os maiores g?neros representados no Brasil, Gomphrena com 45 esp?cies e Alternanthera com 36 esp?cies. Alternanthera ? um grupo monofil?tico com cerca de 100 esp?cies, possui distribui??o pantropical e ? caracterizado por apresentar infloresc?ncias axilares, s?sseis ou pedunculadas, com unidade parcial da infloresc?ncia reduzida a ?nica flor. As flores s?o s?sseis ou pediceladas, protegidas por uma br?ctea e duas bract?olas, bissexuadas, com (4?)5 t?palas, (4?)5 estames com filetes fundidos formando um tubo basal, livres acima do tubo e alternados com pseudo-estamin?dios. A ?ltima revis?o de Alternanthera para o Brasil foi elaborada para a Flora brasiliensis mais de 160 anos atr?s, justificando-se plenamente a nova revis?o proposta, que ? o principal objetivo desta tese. Os resultados obtidos encontram-se distribu?dos em quatro cap?tulos, que se seguem ap?s a Introdu??o. No Cap?tulo 1 ? apresentado o estudo morfol?gico das esp?cies de Alternanthera do Brasil, onde foram levantados 107 caracteres dos quais 99 foram considerado informativos e foram avaliados utilizando o Programa DeLTA. Como resultado, ? produzida uma descri??o dos ?rg?os vegetativos e florais de Alternanthera destacando os mais importantes para taxonomia do grupo, bem como uma discuss?o dos diferentes termos utilizados na morfologia do grupo. No Cap?tulo 2 ? apresentado o estudo do ?complexo Alternanthera brasiliana? composto por cinco esp?cies, atrav?s da abordagem de estat?stica explorat?ria. Como resultado foram reconhecidas apenas quatro esp?cies no grupo, com a proposta de sinonimiza??o de Alternanthera ramosissima em A. brasiliana. No Cap?tulo 3 ? inclu?do o texto original da nova esp?cie Alternanthera catingae, enviado para publica??o na revista Phytotaxa. No Cap?tulo 4 ? apresentada a revis?o das esp?cies brasileiras de Alternanthera realizada a partir da an?lise de mais de 1900 esp?cimes do g?nero, depositados em 19 herb?rios, com a utiliza??o do conceito tipol?gico de esp?cies. Al?m da metodologia tradicional utilizada em trabalhos de revis?o, foram utilizadas tamb?m ferramentas diferenciadas para an?lise e avalia??o das esp?cies que ocorrem no Brasil. Foram reconhecidas 35 esp?cies, das quais uma nova para a ci?ncia, A.catingae, seis sin?nimos de esp?cies cujos tipos s?o do p?is, e uma nova combina??o. O trabalho aqui apresentado se constitui um importante avan?o para o estudo das Amaranthaceae brasileiras, especialmente visando a flora do Brasil on line para 2020.

Made available in DSpace on 2014-12-17T14:53:03Z (GMT). No. of bitstreams: 1 FelipeFO_DISSERT.pdf: 2855164 bytes, checksum: 59d14cba23381a5570780ca5cdca38f6 (MD5) Previous issue date: 2011-05-10 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / This research aims to investigate the evolution presented during three decades (1980, 1990 and 2000) of using the tools of Operations Research (OR) as a suport to decision making in Production Operation Management (POM). Hypothesis tests were made to verify the proportional growth of a given area over the decades to the detriment of the areas of facility layout, capacity planning, production scheduling and inventory management. Six journals were selected and from them more than 800 articles were used for classification and analysis in the grounds of review. It also discussed possible ways for future research and comparisons are made with other papers of literature review. As a result, it was found that areas of heuristics and simulation showed a greater quantity of contributions in all POM areas of this study / A presente pesquisa tem como objetivo investigar a evolu??o apresentada durante tr?s d?cadas (1980, 1990 e 2000) do uso das ferramentas de Pesquisa Operacional (PO) como aux?lio ? tomada de decis?o em Gest?o da Produ??o e Opera??es (GPO). Para tal foram realizados testes de hip?teses para verificar o crescimento proporcional de determinada ?rea da PO durante as d?cadas em detrimento das ?reas de layout, planejamento da capacidade, programa??o da produ??o e gest?o de estoques. Seis peri?dicos foram selecionados e a partir deles mais de 800 artigos foram utilizados para classifica??o e an?lise na fundamenta??o da an?lise explorat?ria da literatura. ? discutido ainda poss?veis caminhos da pesquisa para o futuro e s?o feitas compara??es com outros trabalhos de revis?o de literatura. Como resultado, verificou-se que as ?reas de heur?stica e simula??o apresentaram um maior quantitativo de contribui??es em todas as ?reas da GPO pesquisadas

Made available in DSpace on 2014-12-17T15:37:17Z (GMT). No. of bitstreams: 1 CarolinaCA_DISSERT.pdf: 2842733 bytes, checksum: 3e54d35218351983a82f9dd10743303b (MD5) Previous issue date: 2013-04-12 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / One of the main environmental cues for the adjustment of temporal organization of the animals is the light-dark cycle (LD), which undergoes changes in phase duration throughout the seasons. Photoperiod signaling by melatonin in mammals allows behavioral changes along the year, as in the activity-rest cycle, in mood states and in cognitive performance. The aim of this study was to investigate if common marmoset (Callithrix jacchus) exhibits behavioral changes under short and long photoperiods in a 24h cycle, assessing their individual behaviors, vocal repertoire, exploratory activity (EA), recognition memory (RM) and the circadian rhythm of locomotor activity (CRA). Eight adult marmosets were exposed to a light-dark cycle of 12:12; LD 08:16; LD 12:12 and LD 16:08, sequentially, for four weeks in each condition. Locomotor activity was recorded 24h/day by passive infrared motion detectors above the individual cages. A video camera system was programmed to record each animal, twice a week, on the first two light hours. From the videos, frequency of behaviors was registered as anxiety-like, grooming, alert, hanging position, staying in nest box and feeding using continuous focal animal sampling method. Simultaneously, the calls emitted in the experimental room were recorded by a single microphone centrally located and categorized as affiliative (whirr, chirp), contact (phee), long distance (loud shrill), agonistic (twitter) and alarm (tsik, seep, see). EA was assessed on the third hour after lights onset on the last week of each condition. In a first session, marmosets were exposed to one unfamiliar object during 15 min and 24h later, on the second session, a novel object was added to evaluate RM. Results showed that long days caused a decreased of amplitude and period variance of the CRA, but not short days. Short days decreased the total daily activity and active phase duration. On long days, active phase duration increased due to an advance of activity onset in relation to symmetric days. However, not all subjects started the activity earlier on long days. The activity offset was similar to symmetric days for the majority of marmosets. Results of EA showed that RM was not affected by short or long days, and that the marmosets exhibited a decreased in duration of EA on long days. Frequency and type of calls and frequency of anxiety-like behaviors, staying in nest box and grooming were lower on the first two light hours on long days. Considering the whole active phase of marmosets as we elucidate the results of vocalizations and behaviors, it is possible that these changes in the first two light hours are due to the shifting of temporal distribution of marmoset activities, since some animals did not advance the activity onset on long days. Consequently, the marmosets mean decreased because the sampling was not possible. In conclusion, marmosets synchronized the CRA to the tested photoperiods and as the phase angle varied a lot among marmosets it is suggested that they can use different strategies. Also, long days had an effect on activity-rest cycle and exploratory behaviors / Uma das principais pistas ambientais para o ajuste da organiza??o temporal dos animais ? o ciclo claro-escuro (CE), que sofre altera??o na dura??o das fases no decorrer das esta??es do ano. A sinaliza??o do fotoper?odo pelo horm?nio melatonina possibilita que os mam?feros se comportem de forma diferenciada ao longo do ano, como no ritmo de atividade-repouso, nos estados de humor e no desempenho cognitivo. Este estudo teve como objetivo avaliar se o sagui (Callithrix jacchus) exibe altera??es comportamentais em fotofases de diferentes dura??es em ciclo CE de 24h por meio da avalia??o dos repert?rios comportamental e vocal, da atividade explorat?ria (AE), da mem?ria de reconhecimento (MR) e do ritmo circadiano de atividade locomotora (RCA) em ambiente laboratorial. Oito saguis adultos, alojados individualmente, passaram 28 dias em cada etapa: dias sim?tricos (DS1 - CE 12h:12h), dias curtos (DC - CE 8h:16h), DS2 (CE 12h:12h) e dias longos (DL - CE 16h:8h). A atividade locomotora foi registrada continuamente por sensores de movimento acima das gaiolas. Um sistema de c?meras registrou os comportamentos individuais por 2 horas ap?s o in?cio do claro, duas vezes por semana. A partir das filmagens, foi amostrada a frequ?ncia dos comportamentos ansiosos, cata??o, alerta, pendurado, ficar na caixa ninho e comer pelo m?todo Animal Focal Cont?nuo. Ao mesmo tempo, um microfone registrou as vocaliza??es emitidas na sala de experimenta??o, categorizadas em afiliativa (whirr, chirp), contato (phee), longa dist?ncia (loud shrill), agon?stica (twitter) e alarme (tsik, seep, see). A AE foi avaliada na terceira hora ap?s o in?cio do claro em 2 sess?es de 15 min na ?ltima semana de cada ciclo. Na primeira apresenta??o, foi utilizado um objeto n?o familiar e 24 h depois, na segunda apresenta??o, foi adicionado um novo objeto para avaliar a MR. Os resultados mostraram que os DL diminu?ram a amplitude e a vari?ncia do per?odo do RCA, mas n?o os DC. Os DC causaram uma diminui??o do total di?rio de atividade e da dura??o da fase ativa. Nos DL, a dura??o da fase ativa aumentou devido a um avan?o no in?cio da atividade em rela??o aos dias sim?tricos. Contudo, nem todos os sujeitos iniciaram a atividade mais cedo nos dias longos. O hor?rio de t?rmino da atividade nos DL foi similar aos DS para a maioria dos sujeitos. Os resultados da AE mostrou que os DL e DC n?o afetaram a MR dos saguis e que os DL reduziram a dura??o da AE. Tamb?m foi observado nos DL uma redu??o da frequ?ncia e da diversidade das vocaliza??es, bem como da frequ?ncia dos comportamentos ansiosos, ficar na caixa ninho e cata??o nas duas horas ap?s in?cio do claro. Considerando toda a fase ativa na interpreta??o dos resultados dos comportamentos e vocaliza??es, ? poss?vel que essas altera??es nas duas horas iniciais tenham sido pelo deslocamento da distribui??o temporal da atividade do sagui e n?o um efeito genu?no dos DL, pois alguns animais n?o avan?aram o in?cio da atividade nos DL, causando a redu??o na m?dia do grupo por impossibilitar a amostragem. Em conclus?o, os saguis sincronizaram o RCA aos fotoper?odos e, pela varia??o individual nas rela??es de fase, parecem fazer uso de diferentes estrat?gias. Al?m disso, os DL afetaram o ciclo de atividade e repouso e as respostas explorat?rias

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-06-02T19:19:17Z No. of bitstreams: 1 TaizaRabelloMontenegro_DISSERT.pdf: 2317460 bytes, checksum: 372e57740f0bdb5c6fc0cdd5a279c949 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-06-05T20:02:53Z (GMT) No. of bitstreams: 1 TaizaRabelloMontenegro_DISSERT.pdf: 2317460 bytes, checksum: 372e57740f0bdb5c6fc0cdd5a279c949 (MD5) / Made available in DSpace on 2017-06-05T20:02:53Z (GMT). No. of bitstreams: 1 TaizaRabelloMontenegro_DISSERT.pdf: 2317460 bytes, checksum: 372e57740f0bdb5c6fc0cdd5a279c949 (MD5) Previous issue date: 2017-02-20 / Na medida em que aumenta a depend?ncia da sociedade com os sistemas de software, aumenta tamb?m a demanda pela robustez destes sistemas. O tratamento de exce??es ? uma das t?cnicas mais utilizadas para a constru??o de sistemas de software robustos. A pol?tica de tratamento de exce??es ? o conjunto de regras que define como as exce??es devem ser manuseadas. Por?m, na maioria dos casos, essa pol?tica n?o est? definida de forma expl?cita, sendo um desafio para o desenvolvedor criar o c?digo de tratamento de exce??es. Este trabalho prop?e uma ferramenta em formato de plug-in do Eclipse, denominada ExceptionPolicyExpert, que tem o objetivo de orientar o desenvolvedor na implementa??o desse tipo de c?digo de forma a atender uma pol?tica previamente definida. Esta ferramenta analisa o c?digo fonte e verifica se h? alguma viola??o ? pol?tica de tratamento de exce??es, alertando o desenvolvedor para n?o conformidade, caso exista. Para auxiliar o levantamento dos requisitos da ferramenta, foi realizado um estudo explorat?rio com desenvolvedores, utilizando t?cnicas de Grounded Theory, que buscou entender quais eram os principais desafios deles no momento da implementa??o do c?digo de tratamento de exce??es. O estudo mostrou que a maioria deles n?o recebem orienta??es a respeito da pol?tica de tratamento de exce??es e nem tem acesso ? pol?tica de tratamento de exce??es a ser seguida. Consequentemente, muitas vezes lidam com esse c?digo de forma indevida. Dessa forma, foi proposta uma ferramenta que visa trazer informa??es sobre a pol?tica de tratamento de exce??es para a IDE, de forma que auxilie o desenvolvedor na implementa??o do c?digo excepcional sem violar a pol?tica. A avalia??o da ferramenta mostrou que ela auxilia o desenvolvedor a tomar decis?es no momento da implementa??o do c?digo de tratamento de exce??es. / As our society becomes more and more dependent of software systems the demand robustness requirements increases. The exception handling mechanism is one of the most used techniques to enable the development of robust software systems develop. The exception handling policy comprises the set of rules that specify how exceptions should be thrown and handled inside a system. But usually the policy is not explicitly defined. As a consequence, it becomes a challenge for developers to create the exception handling code according to it. This work proposes an Eclipse plug-in, called ExceptionPolicyExpert, to guide the developer on how to implement this kind of code by checking policy violations and providing recommendations to developers concerning how to exceptions should be handled and signaled. In order to support the creation of such tool, we performed an exploratory study, using Grounded Theory techniques, to understand which are the main challenges that the developers have during the implementation of the exception handling code. This study showed that most of the developers did not receive any instructions regarding the exception handling policy and they often handle exceptions in a wrong way. Therefore, the proposed tool aims to provide information to developer regarding the exception handling policy integrated to the IDE - helping him/her to develop exception handling code and preventing policy violations. The tool evaluation showed that the tool helps the developer to make decisions when implementing the exception handling code.

Submitted by SBI Biblioteca Digital (sbi.bibliotecadigital@puc-campinas.edu.br) on 2018-05-04T18:39:57Z No. of bitstreams: 1 ALINE DA SILVA BOSCHI MARTINS NEVES.pdf: 1713644 bytes, checksum: f8d45029bc62915e3c5e77690c011494 (MD5) / Made available in DSpace on 2018-05-04T18:39:57Z (GMT). No. of bitstreams: 1 ALINE DA SILVA BOSCHI MARTINS NEVES.pdf: 1713644 bytes, checksum: f8d45029bc62915e3c5e77690c011494 (MD5) Previous issue date: 2018-02-26 / Stress is one of the constructs emphasized when evaluating the health-disease process. However, because it is a latent variable, specific instruments are needed to measure it. The Perceived Stress Scale (PSS) is an instrument that has been used to assess the perception of stress in the last month. Despite numerous validations in several countries, their psychometric properties have not been consensual. The main objective of this work was to investigate the internal structure of the PSS-10 and PSS-14 versions, through exploratory factorial (AFE) and network analysis. Thus, two studies were carried out: in Study I, PSS-10 and PSS-14 were analyzed through AFE and, in study II, the scales were analyzed through network analysis. We used: a) the PSS-10 with a sample composed of 686 participants, being 175 (27.3%) men and 466 (72.7%) women (n = 641), with a mean age of 33.9 SD = 11.3) years, ranging from 18 to 73 (n = 632); and (b) the PSS-14 was answered by 690 participants, of which 304 (44.1%) were men and 386 (55.9.7%) were women, with a mean age of 34.72 (SD = 12, 56), with a range of 18 to 65. In both analyzes, the psychometric properties of PSS-10 and PSS-14 were shown to be reliable and confirmed the two-dimensional structure of distress and coping. Also, the network analysis allowed to explore the PSS in the Brazilian context, allowing new association patterns to emerge from the analyzed samples. And, even AFE being a widely used technique in the construction and evaluation of psychometric tests, network analysis has shown to be a promising and much more comprehensive tool at the level of the symptom, accommodating the numerous processes of psychological constructions. In this study, the network analysis showed how the perception of control influences the outcome of stress. Thus, in addition to providing evidence of validity of the PSS-10 and PSS-14, this study demonstrated how much the network analysis has to contribute in the psychology and health area. / O estresse ? um dos construtos enfatizados quando se avalia o processo sa?de- doen?a. No entanto, por ser uma vari?vel latente, instrumentos espec?ficos s?o necess?rios para mensur?-lo. A Escala de Estresse Percebido (Perceived Stress Scale - PSS) ? um instrumento que tem sido utilizado para avaliar a percep??o do estresse no ?ltimo m?s. Apesar de in?meras valida??es em diversos pa?ses, suas propriedades psicom?tricas n?o t?m sido consensuais. O objetivo principal deste trabalho foi investigar a estrutura interna das vers?es PSS-10 e PSS-14, por meio de an?lise fatorial explorat?ria (AFE) e de rede. Assim, dois estudos foram realizados: no Estudo I, a PSS-10 e a PSS-14 foram analisadas atrav?s da AFE e, no estudo II, analisaram-se as escalas por meio da an?lise de rede. Foram utilizadas: a) a PSS-10 com uma amostra composta por 686 participantes, sendo 175 (27,3%) homens e 466 (72,7%) mulheres (n = 641), com m?dia de idade de 33,9 (SD = 11,3) anos, com amplitude de 18 a 73 (n = 632); e b) a PSS-14 que foi respondida por 690 participantes, dos quais 304 (44,1%) s?o homens e 386 (55,9,7%), mulheres, com m?dia de idade de 34,72 (SD = 12,56) anos, com amplitude de 18 a 65. Nas duas an?lises, as propriedades psicom?tricas da PSS-10 e PSS-14 demonstraram-se confi?veis e confirmaram a estrutura bidimensional de distress e coping. Ainda, a an?lise de rede permitiu explorar a PSS no contexto brasileiro, permitindo que novos padr?es de associa??o emergissem das amostras analisadas. E, mesmo a AFE sendo t?cnica muito utilizada na constru??o e avalia??o de testes psicom?tricos, a an?lise de rede demonstra ser uma ferramenta promissora e muito mais abrangente no n?vel do sintoma, acomodando os numerosos processos das constru??es psicol?gicas. Neste estudo, a an?lise de rede evidenciou o quanto a percep??o de controle influencia no desfecho do estresse. Assim, al?m de fornecer evid?ncias de validade da PSS-10 e PSS-14, este estudo demonstrou o quanto ? an?lise de rede tem a contribuir no ?mbito da psicologia e na ?rea da sa?de.

Made available in DSpace on 2014-12-17T15:41:47Z (GMT). No. of bitstreams: 1 AnneGDS_DISSERT.pdf: 3113468 bytes, checksum: a8146612a95169da2fa541dd638d6763 (MD5) Previous issue date: 2010-02-26 / The search for new sources of environmentally friendly energy is growing every day. Among these alternative energies, biodiesel is a biofuel that has had prominence in world production. In Brazil, law 11.097, determine that all diesel sold in the country must be made by mixing diesel/biodiesel. The latter called BX, , where X represents the percent volume of biodiesel in the diesel oil, as specified by the ANP. In order to guarantee the quality of biodiesel and its mixtures, the main properties which should be controlled are the thermal and oxidative stability. These properties depend mainly of the chemical composition on the raw materials used to prepare the biodiesel. This dissertation aims to study the overall thermal and oxidative stability of biodiesel derived from cotton seed oil, sunflower oil, palm oil and beef tallow, as well as analyze the properties of the blends made from mineral oil and biodiesel in proportion B10. The main physical-chemical properties of oils and animal fat, their respective B100 and blends were determined. The samples were characterized by infrared and gas chromatography (GC). The study of thermal and oxidative stability were performed by thermogravimetry (TG), pressure differential scanning calorimeter (PDSC) and Rancimat. The obtained biodiesel samples are within the specifications established by ANP Resolution number 7/2008. In addition, all the blends and mineral diesel analyzed presented in conformed withthe ANP Regularion specifications number 15/2006. The obtained results from TG curves data indicated that the cotton biodiesel is the more stable combustible. In the kinetic study, we obtained the following order of apparent activation energy for the samples: biodiesel from palm oil > sunflower biodiesel > tallow biodiesel > cotton biodiesel. In terms of the oxidative stability, the two methods studied showed that biodiesel from palm oil is more stable then the tallow. Within the B100 samples studied only the latter were tound to be within the standard required by ANP resolution N? 7. Testing was carried out according to the EN14112. This higher stability its chemical composition / A busca por novas fontes de energia, que sejam ecologicamente corretas, cresce a cada dia. Dentre essas energias alternativas, o biodiesel ? um dos biocombust?veis que vem tendo destaque na produ??o mundial. No Brasil, a Lei n? 11.097, determina que todo diesel vendido no pa?s, deve ser constitu?do pela mistura de ?leo diesel/biodiesel, denominado BX, onde X representa o percentual em volume de biodiesel no ?leo diesel, conforme especifica??o da Ag?ncia Nacional do Petr?leo (ANP). Entre as principais propriedades que devem ser controladas para garantir a qualidade do biodiesel est?o as estabilidades t?rmica e oxidativa, as quais dependem, basicamente, da composi??o da mat?ria prima utilizada. Este trabalho tem como objetivo estudar a estabilidade t?rmica e oxidativa de biodieseis provenientes dos ?leos de algod?o, girassol, dend? e do sebo bovino, assim como analisar as propriedades das blendas feitas do ?leo mineral com biodiesel, na propor??o B10. Foram determinadas as principais propriedades f?sico-qu?micas dos ?leos vegetais e gordura animal, das respectivas amostras de B100 e suas misturas, al?m de caracteriza??es atrav?s de infravermelho e cromatografia a g?s. O estudo das estabilidades t?rmica e oxidativa foram realizados atrav?s de Termogravimetria (TG), Calorimetria Explorat?ria Diferencial sob Press?o (PDSC) e Rancimat. As amostras de biodiesel obtidas est?o dentro das especifica??es estabelecidas pela Resolu??o da ANP No7/2008. As misturas analisadas e o diesel mineral apresentaram todos os resultados em conformidade com as especifica??es da Portaria da ANP N?15/2006. Os resultados obtidos via TG apontam o biodiesel de algod?o como o mais est?vel. No estudo cin?tico, obteve-se a seguinte ordem de energia de ativa??o aparente: biodiesel de dend? > biodiesel de girassol > biodiesel de sebo > biodiesel de algod?o. Em rela??o ? estabilidade oxidativa os resultados obtidos via PDSC e Rancimat indicaram que o biodiesel de dend? foi o mais est?vel, e em seguida o de sebo. Dentre os B100 estudados, o de dend? e sebo bovino, se encontraram dentro dos padr?es exigidos na Resolu??o ANP N?7 (tempo de indu??o 6h), os ensaios foram realizados de acordo com a norma Europ?ia EN14112, a temperatura de 110?C. A maior estabilidade do biodiesel de dend? pode ser atribu?do ? sua composi??o qu?mica