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本篇論文的目的在於探討兒童在親子對話中行使重新請求 (request reformulation) 的情況，研究問題如下: 1.兒童採取哪些重新請求的策略以達到請求的目的? 2.親子對話中，常見的重新請求的序列模式（patterns of request reformulation sequences）為何？ 2.如何從兒童重新請求的使用反映出角色取代能力 (perspective-taking ability )的發展? 研究對象為一位三歲和一位六歲的男孩。研究結果顯示隨著年紀的增長，兒童能使用更多元的重新請求策略。研究也發現造成請求失敗的原因隨著不同年齡的兒童有所差異。隨著年紀的增長，兒童面臨的失敗原因和挑戰日漸複雜、困難，兒童會依據不同的失敗原因採取重新請求的策略。最後，研究顯示不同年齡兒童採取的重新請求策略可以展現出他們不同階段的角色取代能力的發展。三歲的兒童無法跳脫自己的觀點而從別人的角度來看待自己的請求，所以重新請求著重於強調自己的需求。六歲的兒童較能夠從別人的立場看待自己的請求，所以他較有能力在考量對方的觀點和利益之後採用對雙方有益的策略。 / The purpose of this study is to explore how children at different age make reformulation to compensate for an unsuccessful request. Firstly, we aim to investigate what reformulation strategies children apply and the patterns of reformulation sequences. Second, we further aim to explore how children’s use of reformulation strategies reveals the development of perspective-taking ability. The data analyzed are natural conversations of two Mandarin-speaking mother-child dyads. Subjects in this present study are two male children. One subject is three years and six months old and the other is six years old. The strategies of request reformulation adopted in this study are mainly based on Levin and Rubin’s (1984) categorization. The results show that children would have a greater variety of reformulation strategies as they get older. Furthermore, aggravation and explanation are both children’s main strategies of reformulation. With the growth of age, children decrease the use of aggravation and increase the use of bargain and mitigation. Furthermore, the results of reformulation sequences reveal that the two children are confronted with different causes of the failure to obtain compliance, which influences their adoption of reformulation strategies. The younger child faced the communicative breakdown and his mother’s ignorance while the older child encountered his mother’s queries and disagreements. Finally, the two children’s application of reformulation strategies revealed their different ability to take the other’s perspectives. The younger child’s reliance on aggravation and speaker-oriented negotiation reveals that he is embedded in his own viewpoints and is less able to view his request from the hearer’s viewpoints while the older child is more able to view the request from the hearer’ perspective and take her benefits into account. Our findings throw some light on children’s use of request reformulation strategy and the development of the perspective-taking ability.

<div>Latency is regarded as the Achilles heel of cloud computing. Pricing is an essential component in the cloud market since it not only directly affects a cloud service provider's (CSP's) revenue but also a user's budget. This dissertation investigates the latency-aware pricing schemes that provide rigorous performance guarantees for the cloud market. The research is conducted along the following major problems as summarized below:</div><div><br></div><div>First, we will address a major challenge confronting the CSPs utilizing a tiered storage (with cold storage and hot storage) architecture - how to maximize their overall profit over a variety of storage tiers that offer distinct characteristics, as well as file placement and access request scheduling policies. To this end, we propose a scheme where the CSP offers a two-stage auction process for (a) requesting storage capacity, and (b) requesting accesses with latency requirements. Our two-stage bidding scheme provides a hybrid storage and access optimization framework with the objective of maximizing the CSP's total net profit over four dimensions: file acceptance decision, placement of accepted files, file access decision and access request scheduling policy. The proposed optimization is a mixed-integer nonlinear program that is hard to solve. We propose an efficient heuristic to relax the integer optimization and to solve the resulting nonlinear stochastic programs. The algorithm is evaluated under different scenarios and with different storage system parameters, and insightful numerical results are reported by comparing the proposed approach with other profit-maximization models. We see a profit increase of over 60% of our proposed method compared to other schemes in certain simulation scenarios.</div><div><br></div><div>Second, we will resolve one of the challenges when using Amazon Web Services (AWS). Amazon Elastic Compute Cloud (EC2) provides two most popular pricing schemes--i) the costly on-demand instance where the job is guaranteed to be completed, and ii) the cheap spot instance where a job may be interrupted. We consider a user can select a combination of on-demand and spot instances to finish a task. Thus he needs to find the optimal bidding price for the spot-instance, and the portion of the job to be run on the on-demand instance. We formulate the problem as an optimization problem and seek to find the optimal solution. We consider three bidding strategies: one-time requests with expected guarantee, one-time requests with penalty for incomplete job and violating the deadline, and persistent requests. Even without a penalty on incomplete jobs, the optimization problem turns out to be non-convex. Nevertheless, we show that the portion of the job to be run on the on-demand instance is at most half. If the job has a higher execution time or smaller deadline, the bidding price is higher and vice versa. Additionally, the user never selects the on-demand instance if the execution time is smaller than the deadline. The numerical results illustrate the sensitivity of the effective portfolio to several of the parameters involved in the model. Our empirical analysis on the Amazon EC2 data shows that our strategies can be employed on the real instances, where the expected total cost of the proposed scheme decreases over 45% compared to the baseline strategy.<br></div>

Submitted by Silvana Teresinha Dornelles Studzinski (sstudzinski) on 2016-04-26T12:07:26Z No. of bitstreams: 1 Paula Cortezi Schefer Cardoso_.pdf: 2371409 bytes, checksum: c7f5e8cb111a2ba9ca150a830fe8d1ac (MD5) / Made available in DSpace on 2016-04-26T12:07:26Z (GMT). No. of bitstreams: 1 Paula Cortezi Schefer Cardoso_.pdf: 2371409 bytes, checksum: c7f5e8cb111a2ba9ca150a830fe8d1ac (MD5) Previous issue date: 2016-01-13 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / FAPERGS - Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul / Esta dissertação de mestrado é um subprojeto de um estudo maior, intitulado “Uma mulher, um feto, e uma má notícia: a entrega de diagnósticos de síndromes e de malformações fetais – em busca de uma melhor compreensão do que está por vir e do que pode ser feito”. (OSTERMANN, 2013). Debruçamo-nos sobre o tema de perguntas no português brasileiro com base no aparato metodológico da Análise da Conversa (SACKS; SCHEGLOFF; JEFFERSON, 1974) e da Linguística Interacional. (OCHS; SCHEGLOFF; THOMPSON, 1996; SELTING; COUPER-KUHLEN, 2001). Tendo em vista que o objetivo desta dissertação é distinguir as ações de pedido de informação e pedido de confirmação nas perguntas polares no português brasileiro, analisamos 891 perguntas polares da fase da anamnese das dezessete primeiras consultas de aconselhamento genético reprodutivo. As consultas ocorreram em um setor que atende mulheres em gestação de médio ou alto risco de um hospital materno infantil do Sistema Único de Saúde (SUS) localizado no sul do Brasil. Os resultados da investigação apontam que, nesse contexto, as ações de pedido de informação e pedido de confirmação se distinguem pelo grau epistêmico do médico em relação à informação solicitada. Evidenciamos que os conhecimentos prévios podem ser provenientes de diferentes fontes, sendo elas: (a) a interação, (b) o conhecimento médico específico, (c) o grupo de medicina fetal do hospital analisado e/ou (d) o prontuário médico da gestante. No que concerne aos recursos interacionais que diferem essas duas ações, identificamos o uso de marcadores discursivos somente na ação de pedido de confirmação. No que tange à análise prosódica, com o intuito de descrever a curva de F0 dessas perguntas polares, a análise aconteceu em duas etapas. Inicialmente, realizamos a análise auditiva das 891 perguntas polares e, em seguida, realizados a análise acústica de 300 dessas perguntas por meio do software PRAAT. Corroborando a descrição da entoação das perguntas apresentada em gramáticas descritivas do português brasileiro (CASTILHO, 2014; PERINI, 2005), evidenciamos que algumas delas apresentam entoação final ascendente. No entanto, nossos dados também revelaram que essas perguntas polares podem apresentar entoação final descendente. Na coleção de perguntas polares analisadas, constatamos que algumas demonstravam uma orientação do médico em relação a tópicos delicados o que, por sua vez, consititui outra análise. Identificamos que, nos assuntos interacionalmente construídos como delicados pelo médico geneticista, o formato do turno com as expressões “chegaste a” e “chegou a”, nas solicitações de informação sobre o uso do ácido fólico e na realização do exame de translucência nucal, atribui menor responsabilização à gestante. Em contrapartida, nas sequências em que o médico solicita informação sobre os hábitos relacionados ao fumo, ao consumo de álcool e ao uso de drogas, há responsabilização das gestantes por meio de fechamentos com avaliação positiva. / This master’s dissertation consists of a subproject of a larger study, entitled “Uma mulher, um feto, e uma má notícia: a entrega de diagnósticos de síndromes e de malformações fetais – em busca de uma melhor compreensão do que está por vir e do que pode ser feito”. (OSTERMANN, 2013). It investigates questions in Brazilian Portuguese through a conversation analytical perspective (SACKS; SCHEGLOFF; JEFFERSON, 1974) and an interaction linguistics approach. (OCHS; SCHEGLOFF; THOMPSON, 1996; SELTING; COUPER-KUHLEN, 2001). Taking into consideration that the objective of this dissertation is to distinguish the actions of requesting for information and requesting for confirmation in polar questions in Brazilian Portuguese, 891 polar questions were analyzed during the anamnesis phase in 17 first-time genetic counseling consultations. All of these consultations audiorecorded were held at a public health system hospital specialized in moderate and high-risk pregnancy, located in southern Brazil. The results indicate that, in this context, the actions of asking for information and asking for confirmation differ by the doctor’s epistemic degree concerning the information being requested. It was noticed that such previous knowledge might be originated from different sources, which are: (a) the interaction itself, (b) medical knowledge, (c) information gained through the fetal medicine group and/or (d) information from medical records. Regarding the interactional resources that differentiate these two actions, we identified that discourse markers were only used in requests for confirmation. On what concerns their prosodic features, in order to describe the F0 curve of these polar questions, the analysis was done in two stages. Firstly, we conducted an auditory analysis of all the 891 polar questions and, then, by using the software PRAAT, we conducted the acoustic analysis in 300 of these polar questions. Confirming the intonation patterns of polar questions described in Brazilian Portuguese descriptive grammar (CASTILHO, 2014; PERINI, 2005), we also identified that polar questions may present rising intonation. However, our data also reveal that polar questions may present falling and flat intonation. In the set of analyzed polar questions, we observed that some demonstrated the doctor’s orientation to delicate topics and this subset was also submitted to analysis. We identified that only specific topics were interactionally constructed as delicate by the geneticist. We also observed that in the turns designed with the expression “did you happen to”, in requests of information about folic acid and nuchal translucency, the doctor removes the responsibility from the pregnant. On the other hand, in the sequences in which the doctor requests information about smoking, drinking and using drugs, by the offering closings with positive assessments and accounts, the doctor attributes the responsibility to the pregnant women.

Submitted by Nayara Passos (nayara.passos@ufpe.br) on 2015-03-13T13:04:40Z No. of bitstreams: 2 TESE Yaguaratã Cerqueira Cavalcanti.pdf: 2989671 bytes, checksum: cdde3d6cea6de1cabb90748865421b78 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) / Made available in DSpace on 2015-03-13T13:04:40Z (GMT). No. of bitstreams: 2 TESE Yaguaratã Cerqueira Cavalcanti.pdf: 2989671 bytes, checksum: cdde3d6cea6de1cabb90748865421b78 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2014 / The efficient management of Change Requests (CRs) is fundamental for successful software maintenance; however the assignment of CRs to developers is an expensive aspect in this regard, due to the time and expertise demanded. To overcome this, researchers have proposed automated approaches for CR assignment. Although these proposals present advances to this topic, they do not consider many factors inherent to the assignments, such as: developers’ workload, CRs severity, interpersonal relationships, and developers know-how. Actually, as we demonstrate in this work, CR assignment is a complex activity and automated approaches cannot rely on simplistic solutions. Ideally, it is necessary to consider and reason over contextual information in order to provide an effective automation. In this regarding, this work proposes, implements, and validates a context-aware architecture to automate CR assignment. The architecture emphasizes the need for considering the different information available at the organization to provide a more context-aware solution to automated CR assignment. The development of such architecture is supported by evidence synthesized from two empirical studies: a survey with practitioners and a systematic mapping study. The survey provided us with a set of requirements that automated approaches should satisfy. In the mapping study, in turn, we figured out how state-of-the-art approaches are implemented in regarding to these requirements, concluding that many of them are not satisfied. In addition, new requirements were identified in this mapping study. For the implementation of the proposed architecture, we developed a strategy to automate CR assignments which is based on two main components: a Rule-Based Expert System (RBES) and an Information Retrieval (IR) model. The strategy coordinately applies these two components in different steps to find the potential developer to a CR. The RBES takes care of the simple and complex rules necessary to consider contextual information in the assignments, e.g., to prevent assigning a CR to a busy or unavailable developer. Since these rules vary from one organization/project to another, the RBES facilitates their modification for different contexts. On the other hand, the IR model is useful to make use of the historical information of CR assignments to match CRs and developers. Results from the validation study showed that our solution is promising. It is, by comparing the solution with an approach that uses only a machine learning algorithm, such as the Support Vector Machine (SVM), we could improve the accuracy of assignments by almost 50%. The analysis of the solution’s payoff also pointed that such an accuracy is able to pay for the efforts necessary to deploy the solution.-------------------------------------O gerenciamento eficiente de solicitações de mudança (SM) é fundamental para o sucesso das atividades de manutenção e evolução de software. Entretanto, a atribuição de SMs a desenvolvedores é um aspecto custoso desse gerenciamento, pois demanda tempo e conhecimento apropriado do projeto de software. Várias pesquisas já propuseram métodos de atribuição automática de SMs. Embora representem avanços na área, existem fatores inerentes a atribuição de SMs que não são considerados nessas pesquisas e são essenciais para a automação. Como demonstrado nesse trabalho, a atribuição automática deve, por exemplo, considerar a carga de trabalho, a experiência e o conhecimento dos desenvolvedores, a prioridade e a severidade das SMs, a afinidade dos desenvolvedores com os problemas descritos nas SMs, e até mesmo os relacionamentos interpessoais. Para tornar esse cenário ainda mais complexo, esses fatos podem variar de acordo com o projeto de software que está sendo desenvolvido. Assim, uma solução para o problema de atribuição de SMs depende de informações contextuais. Assim, esse trabalho propõe, implementa e valida uma solução arquitetural sensível ao contexto para atribuição automática de SMs. Dado o aspecto contextual da solução, a arquitetura considera diversas fontes de informações presentes na organização, assim como a necessidade de se desenvolver algorítimos que implementem diferentes estratégias de atribuição. Nossa proposta de solução é embasada em resultados de duas pesquisas quantitativas: um estudo de mapeamento sistemático da literatura, e uma pesquisa de questionário com desenvolvedores de software. Esse último forneceu um conjunto de requisitos que a solução automatizada deve satisfazer para que as estratégias de atribuição sejam atendidas, enquanto o mapeamento da literatura identificou técnicas, algoritmos, e outros requisitos necessários a automação. A implementação da arquitetura segue uma estratégia de automação, definida nesse trabalho, que possui dois componentes principais: um sistema especialista baseado em regras (SEBR); e um modelo de recuperação de informação (MRI) com técnicas de aprendizagem. Em nossa estratégia, esses dois componentes são executados alternadamente em momentos diferentes a fim de atribuir uma SM automaticamente. O SEBR processa regras, considerando informações contextuais do projeto de software e da organização que o desenvolve. O MRI é utilizado para fazer o casamento entre SMs e desenvolvedores de acordo com o histórico de atribuições. Os resultados do estudo de validação apontaram que a solução é promissora. Isto é, ao compararmos nossa solução com uma abordagem que utiliza apenas um algoritmo de aprendizado de máquina, como o Support Vector Machine (SVM), pudemos melhorar em quase 50% a acurácia de atribuição. Já a análise de custo de implantação apontou que a acurácia atingida pela solução possui um bom custo benefício.

i Abstract The MA thesis examines the politeness strategies which native speakers and non-native speakers of English employ in written English requests addressed to the faculty. The requests represent by nature the category of Face threatening acts and require a certain level of politeness. The account of politeness is based on the Face management theoretical framework by Brown and Levinson (1987). The empirical part compares on-record (positive and negative) and o↵-record politeness strategies and the level of directness (Blum-Kulka, 1987) comprised in two hundred email messages sent by students of British and Irish, German, and French nationality. The analysis discovered that the nationality/native language is to some extent a determinative feature in the choice of politeness strategies, while the gender of the student influences the level of directness of the request. The Appendix contains the full sample of examined emails. Keywords politeness theory, face management, request, on- record politeness (negative and positive), o↵-record politeness, directness of request

The purpose of this essay is to describe the legal conditions of the two legal rights the safety representatives upholds, the right to suspend work and the right to request investigations. Furthermore, it should be investigated and explained what obstacles and problems the safety representatives may face when it comes to exercising these rights. The aim is also to give the essay a diversity perspective with the help of a study of language problems among migrated workers and if this can be a safety hazard in the work and how it then can be related to the safety representatives legal rights mentioned above. As occupational health and safety issues also are regulated by EU law, the purpose of this essay is also to give a brief account of how EU bodies affects the law concerning occupational health and safety issues. In order to answer the essays research questions and to achieve its purpose, I have worked with the legal method and also performed a qualitative research interview.   I have concluded that the right to request investigations and the right to suspend work are two powerful tools that a safety representative has at its disposal. However, there are several aspects that can affect how they can be used and for what. Furthermore, I also came to the conclusion that there are certain obstacles affecting safety representatives possibilities  to work with its right, in the form of knowledge, time for education and also fear from negative consequences applied from the employer. Finally, I would like to present my conclusions concerning language problems and that they could be considered a safety hazard in the work and that the right to request investigations and the right to suspend work could be relevant in the particular case.

ITC/USA 2005 Conference Proceedings / The Forty-First Annual International Telemetering Conference and Technical Exhibition / October 24-27, 2005 / Riviera Hotel & Convention Center, Las Vegas, Nevada / To monitor ocean resources and environment, we develop an ocean stereo telemetry system built on a PC104 industrial control computer, which is carried by a buoy on the ocean. All monitoring instruments communicate with the computer by six serial ports in virtue of time division multiple access and are synchronized by GPS time to collect data. All monitoring data is archived and compressed in format of RINEX (Receiver Independent Exchange). The uploading data and downloading control command to and from monitoring center is transferred by Iridium communication in automatic retransmission request and broken-point continuing mechanism.