As inovações, motores do desenvolvimento global, viabilizam-se nas organizações por meio dos projetos. Quanto maior for o nível de inovação nesses projetos, maior é a probabilidade de existirem incertezas imprevisíveis. A identificação dos sinais precoces de uma mudança permitiria perceber essas incertezas, porém, para o reconhecimento antecipado desses sinais, é preciso também dar sentido ao que está ocorrendo, pela criação de sentido (sensemaking). Assim, este estudo tem como objetivo principal entender qual é o fator gerador da incerteza imprevisível, quais são os fatores motivadores de sua identificação e quais práticas contribuem para a criação de sentido dessas incertezas em projetos inovadores. Para tal, foi feito um levantamento de campo, de maio a dezembro de 2011, no qual foram utilizados: um questionário para se obterem informações iniciais sobre os projetos que poderiam ser considerados inovadores e, posteriormente, uma entrevista aprofundada, direcionada por um roteiro com perguntas abertas, com um dos participantes do projeto. Foram enviados 152 convites para gestores de projetos, dos quais apenas 16 projetos atenderam aos requisitos exigidos, transformando-se em unidade de análise. A cada uma dessas unidades foram solicitados, também, pelo menos dois eventos imprevistos, materialização da incerteza imprevisível, obtendo-se a quantidade de 35. Esses eventos imprevistos foram considerados unidade de análise incorporada. A análise dos dados foi inicialmente qualitativa, com a geração de variáveis e categorias avaliadas estatisticamente; posteriormente, por meio de provas não paramétricas. Com base nas análises efetuadas, foi possível observar que o nível mais alto de eficiência na identificação da incerteza imprevisível - perceber a incerteza imprevisível previamente e ter menos impacto - ocorre preferencialmente em eventos com a percepção do sinal precoce feita pelo gerente do projeto ou pelo sponsor, no início do projeto; com a existência de um fator facilitador organizacional; com a utilização de um processo de criação coletiva de sentido. O nível mais baixo de eficiência - percepção tardia do evento imprevisto e existência de mais impacto - associa-se, porém, à causa externa da incerteza imprevisível, à ausência da percepção de um sinal precoce, à presença de um fator bloqueador à identificação com origem nas características pessoais, baixo número de atividades coletivas, entre outras. Recomenda-se incorporar o diagnóstico da incerteza na gestão de riscos dos projetos, buscar informações sobre as áreas incertas do projeto e interagir para socializar o conhecimento. Futuros estudos ampliados, para se obter um número maior de eventos e projetos, poderão permitir novas associações, assim como gerar um modelo multivariado. O uso de métodos alternativos de gestão de projetos inovadores também se mostra como um relevante tema de pesquisa. / The organizations enable innovations, engines of global development, through the projects. The more innovative a project, the greater is the probability of occurrence of unforeseeable uncertainties. The identification of early signs of a change would realize this kind of uncertainty, but for the early recognition of these early signs is necessary to give sense to them, sensemaking. Thus, this study aims to understand what the main factor that generates the unforeseeable uncertainty is, what the motivating factors for their identification are and what the practices that contribute to the creation of meaning of these uncertainties are on innovative projects. To this end, a field survey has been done, from May to December 2011, with: a questionnaire to obtain initial information about the projects that could be considered innovative, and subsequently an in-depth interview, guided by a script with open questions, with one of the project participants. 152 invitations were sent to project managers, of which only 16 projects met the requirements, becoming a unit of analysis. Each of these units was also requested at least two unforeseen events, materialization of unforeseeable uncertainty, thus obtaining 35 unanticipated events, which are considered the unit of analysis embedded. Data analysis was qualitative, the generation of categories and variables were evaluated statistically through non-parametric tests. Based on the analysis performed it was observed that the highest level of efficiency in identifying unforeseeable uncertainty - it was notice in advance and it had less impact - occurred preferentially when events have had the perception of early sign made by the project manager or the sponsor at the beginning of the project, with the existence of an organizational facilitator factor, and using a collective sensemaking process. Moreover, the lowest level of efficiency - late perception of the unforeseeable event and existence of more impact - were associated with the external cause of unforeseeable uncertainty, the lack of perception of an early signal, the presence of a blocking factor identification originated from the personal characteristics, low number of collective activities, among others. It is recommended to incorporate the diagnosis of unforseeable in risk management of projects, seeking information about the uncertain areas of the project and interacting to share the knowledge. Further studies extended to obtain a larger number of events and projects may allow new associations as well as generate a multivariate statistical model. The use of alternative methods of management of innovative projects to identify unforeseeable uncertainty also appears as a relevant research topic.

Parmi les méthodes de diagnostic de défauts issue de l'automatique, la méthode des filtres résiduels permet de synthétiser des filtres générant des signaux (dits résidus) qui sont utilisés à des ns de détection de défauts. Dans notre approche, les filtres résiduels sont obtenus à partir d'observateurs réduits. L'objectif decette thèse est de synthétiser des observateurs et de mettre en évidence leur application à la détection de défauts pour les systèmes non linéaires. Ce mémoire est réparti en deux parties. Dans la première partie, deux contributions ont été présentées. La première concerne les observateurs à entrées inconnues pour les systèmes affines en l'état modulo une injection de sortie. L'approche proposée est une combinaison des techniques de découplage géométrique et des observateurs non linéaires. Des conditions suffisantes ont été données accompagnées d'un algorithme permettant de concevoir un observateur à entrées inconnues permettant d'estimer une partie de l'état indépendamment de la connaissance de certaines entrées. La deuxième contribution consiste à caractériser la classe des systèmes non linéaires qui se transforment en des systèmes en cascade pour lesquels un observateur peut être conçu. Tout d'abord, des conditions nécessaires et suffisantes théoriques ont été données, ensuite un algorithme permettant de calculer ces transformations (diéomorphismes) a été proposé. Enfin, l'ensemble de tous ces difféomorphismes a été caractérisé en montrant que ce dernier est une orbite d'une action d'un groupe particulier sur l'ensemble de tous les difféomorphismes. La deuxième partie de cette thèse concerne la synthèse d'un filtre polytopique Linéaires à Paramètres Variants (LPV) permettant de détecter, isoler et estimer de multiples défauts capteur. L'avantage de ce filtre est de générer deux types de résidus : l'un étant sensible aux défauts et l'autre insensible. Le résidu insensible est utilisé pour fournir une information qualitative supplémentaire de l'efficacité du filtre. La stabilité de ce dernier est analysée au moyen d'Inégalités Matricielles Linéaires (LMI) / Among the faults diagnosis methods, the method of residual filters allows to synthesize filters generating signals ( called residues) that are used for fault detection. In our approach, the residual filters are obtained from reduced observers. The objective of this thesis is to synthesize observers and highlight their application to fault detection for nonlinear systems. This thesis is divided into two parts. In the first part, two papers were presented. The rst one relates to the unknown input observers for state ane systems modulo an output injection. The proposed approach is a combination of geometric decoupling techniques and nonlinear observers. We have given sufficient conditions with an algorithm for designing an unknown input observer to estimate a part of the state without the knowledge of some inputs. The second contribution consists to characterize the class of nonlinear systems which can be transformed into cascade systems for which an observer can be designed. First, necessary and sufficient theoretical conditions were given, then an algorithm to compute these transformations (diffeomorphisms) was proposed. Finally, the set of all dieomorphisms was characterized by showing that it is an orbit of an action of a particular group on the set of all dieomorphisms. The second step of the thesis deals with the synthesis of a polytopic Linear Parameter-Varying (LPV) filter to detect, isolate and estimate multiple sensor faults. The advantage of this lter is to generate two types of residuals : one being sensitive to faults and the other is insensitive. The insensitive residual is used to generate an additional qualitative information of the filter efficiency. The stability of the latter has been performed using Linear Matrix Inequality (LMI)

Em outubro de 2005 a notificação de 17 casos de doença ocular de etiologia desconhecida, envolvendo, em sua maioria, a população infantil da cidade de Araguatins/TO, levou as autoridades locais a pedirem ajuda a Secretaria de Estado da Saúde do Estado do Tocantins no intuito de descobrirem sua etiologia, tratamento e prevenção. Nos pacientes acometidos, os sinais freqüentemente observados foram: intensa hiperemia conjutival, granuloma, episclerite, infiltrado corneano periférico. Na anamnese realizada nos pacientes foi observado que todos tiveram contato com as águas do Rio Araguaia. Os resultados obtidos a partir do processamento das amostras de água, sedimentos e substratos particularmente na vegetação marginal inundada, permitiram confirmar a hipótese de que deveria haver uma fauna rica de esponjas no Araguaia, no trecho fronteiro à cidade de Araguatins A presença intraocular de espícula de esponja de água doce das espécies Drulia uruguayensis e Oncosclera navicela foi confirmada em material avaliado histopatologicamente proveniente de três pacientes que haviam sido submetidos a lensectomia, sugerindo que espículas de água doce poderiam ser um surpreendente novo agente etiológico de patologia ocular. Assim, neste estudo foram realizados ensaios de citotoxicidade com amostras de duas espécies de esponjas coletadas no local. Os resultados indicam que os extratos das esponjas após filtração em filtro Millipore 0,45 μm continuaram apresentando atividade citotóxica, sugerindo haver um componente SOLÚVEL, e não somente espículas, capaz de induzir morte celular na população de células utilizadas. Os indivíduos acometidos foram na maioria do sexo masculino com idade entre 05 e 14 anos. / In October 2005 the notification of 17 cases of eyes disease of unknown etiology, involving, in its majority, the infant population of the city of Araguatins/TO, led the local authorities to ask help to the Secretariate of State of Health of the State of Tocantins in order to discover their etiology, treatment and prevention. In affected patients, the signs frequently observed were: intense hyperemia conjutival, granuloma, episclerite, peripheral cornea infiltrated. In the anamnesis performed in patients was observed that all of them had contact with the waters of the Araguaia river. The results obtained from processing samples of water, sediments and substrates particularly in the vegetation marginal flooded, allowed confirming the hypothesis that there should be a rich fauna sponges in Araguaia, close to the city of Araguatins The presence of spicula of intraocular sponge species of freshwater Drulia uruguayensis and Oncosclera navicela was confirmed in material evaluated histopathologically from three patients who had undergone lensectomy, suggesting that \"spikes freshwater could be a surprising new etiologic agent of pathology ocular\". Thus, in this study was performed cytotoxicity assays with samples from two species of sponges collected in place. The results indicate that the extracts of sponges after filtration Millipore 0.45 μm continued presenting cytotoxic activity, suggesting there is a SOLUBLE component, and not only spikes, capable of inducing cellular death in the population of cells used. The individuals affected were the majority of males aged between 05 and 14 years.

本研究的主要目的是探討國一學生在一元一次不等式的錯誤類型，並分析錯誤原因。 本研究的設計採用調查研究法，共分成兩個階段進行，第一階段為準備階段，主要工作為文獻探討、分析國中數學教材、自編「一元一次不等式錯誤類型分析研究」試卷，進行試卷的施測，預試樣本共56名國三學生，抽樣方式非隨機取樣，採方便取樣進行，再由預試結果經修改編製正式施測之試卷。第二階段為正式施測與分析階段，正式施測樣本共30名國一學生，男生12名、女生18名，根據施測結果，依成績分成高分組、中分組、低分組三組，再隨機抽取男女生各2名進行半結構的晤談，以瞭解學生答題的想法，分析學生錯誤的原因。 本研究的主要結果如下： 一、不等式答題表現在文字問題的錯誤比率、空白比率最高。 二、在一元一次不等式的錯誤類型為： （一）同義詞的轉換：1.不等號的同義詞概念；2.不等號的符號認知。 （二）範圍解與圖示：1.數的運算；2.無法判斷範圍解；3.數線的認知；4.不等號的圖示認知；5.不等號的方向。 （三）解不等式：1.不等號改變方向；2.去括號；3.數的運算；4.遺漏或增加符號；5.移項的錯誤；6.等量公理的誤用；7.未化簡；8.不等號概念的錯誤9.多項錯誤；10.抄錯題目或答案；11.胡亂猜測答案。 （四）文字問題：1.無法理解題意；2.列式錯誤；3.三角形面積公式錯誤；4.忽略題目的已知條件；5.答案遺漏或錯誤；6.不等號的概念；7.數的運算；8.多項錯誤9.不等號的同義詞概念。 三、一元一次不等式的錯誤原因：1.先備知識的不足；2.資料使用錯誤；3.新舊學習經驗的互相干擾；4.錯誤的使用運算規則；5.由題目所給數字直接產生答案；6.不清楚題目設計或文字敘述而產生錯誤；7.忽略題目所給條件或答案不夠完備而產生錯誤；8.沒有從離散量概念延伸至連續量概念。 / The main purpose of this study is to investigate “seventh grade students' misconceptions and error types of linear inequalities in one unknown”and analyze the causes of the errors. This study adopts survey research and includes two phases. The first stage is the preparation phase, including literature review, analysis of mathematics textbooks, self-compiled test papers on “misconceptions and error types of linear inequalities in one unknown,” and the pretest. The pretest adopts convenience sampling- totally 56 students from ninth grade. The results were later revised to compile the formal test papers. The second stage is the official survey and analysis phase. The 30 samples are seventh grade students, 12 boys and 18 girls. According to the results of the test, these sample students are divided into three groups-high, medium and low performances. Out of each group, two boys and two girls are randomly sampled and conduct semi-structured interviews to analyze the causes of the errors. The findings of this study are as follows: 1.Most of the errors are due to text problems. 2.Error types of linear inequalities in one unknown are: (1)The conversion of synonyms: a. the concept of synonyms; b. symbolic cognitive. (2)The range of solution: a. calculation; b. to determine the range of solution; c. number line; d. notation of inequality sign; e. direction of inequality sign. (3)Problem-solving in inequality: a. to reverse symbol; b. to remove bracket; c. calculation; d. to omit or add symbols; e. transposition errors; f. isometric axiom errors; g. lack of simplification; h. the misconception of inequality sign; i. multinomial errors; j. to copy wrong questions or answers; k. to speculate answers. (4)Text problem: a. not to understand the questions; b. mistakes in formulating expressions; c. triangle area formula errors; d. to ignore provided conditions; e. omission or wrong answers; f. notation of inequality sign; g. calculation; h. multinomial errors; I. the concept of synonyms. 3.Cause of errors: (1) lack of prior knowledge; (2) to use wrong data; (3) the mutual interference of old and new learning experiences; (4) to use wrong calculating rules; (5) to generate answers from given numbers of the questions; (6) not to understand description of the questions; (7) to ignore the provided conditions or the answers are not complete; (8) not extend to continuous volume.

<p>Algebraic equations and functions play an important role in various mathematical topics, including algebra, trigonometry, linear programming and calculus. Accordingly, various documents, such as the most recent Swedish curriculum (Lpf 94) for upper secondary school and the course syllabi in mathematics, specify what the students should learn in Mathematics Course B. They should be able to solve quadratic equations and apply this knowledge in solving problems, explain the properties of a function, as well as be able to set up, interpret and use some nonlinear functions as models for real processes. To implement these recommendations, it is crucial to understand the students’ way of experiencing quadratic equations and functions, and describe the meaning these have for the students in relation to the possibility they have to their experience of them.</p><p>The aim of this thesis is to analyse, understand and explain the relation between the handled and learned content, which consists of second-degree equations and quadratic functions, in classroom practice. This means that content is the research object and not the teacher’s conceptions or knowledge of, or about this content. This restriction implies that the handled and learned contents are central in this study and will be analysed from different perspectives.</p><p>The study includes two teachers and 45 students in two different classes. The data consist of video-recordings of lessons, individual sessions, interviews and the teachers’/researcher’s review of the individual sessions. The students’ tests also constituted an important part of the data collection.</p><p>When analysing the data, concepts relating to variation theory have been used as analytical tools. Data have been analysed in respect of the teachers’ focus on the lesson content, which aspects are ignored and which patterns of dimensions of variations are constituted when the contents are handled by the teachers in the classroom. Also, data have been analysed in respect of the students’ focus when they solve different exercises in a test situation. It can be shown that the meaning of parameters, the unknown quantity in an equation and the function’s argument change several times when the teacher presents the content in the classroom and when the students solve different exercises. It can also be shown that the teachers and the students develop complicated patterns of variation during the lessons and that the ways in which the teachers open up dimensions of variation play an important role in the learning process. The results indicate that there is a convergent variation leading the students to improve their learning. By focusing on some aspects of the objects of learning and create convergent variations, it is possible for the students to understand the difference between various interpretations of these aspects and thereafter focus on the interpretation that fits in a certain context. Furthermore, this variation leads the students to make generalisations in each object of learning (equations and functions) and between these objects of learning. These generalisations remain over time, despite working with new objects of learning. An important result in this study is that the implicit or explicit arguments of a function can make it possible to discern an equation from a function despite the fact that they are constituted by the same algebraic expression.</p>

Algebraic equations and functions play an important role in various mathematical topics, including algebra, trigonometry, linear programming and calculus. Accordingly, various documents, such as the most recent Swedish curriculum (Lpf 94) for upper secondary school and the course syllabi in mathematics, specify what the students should learn in Mathematics Course B. They should be able to solve quadratic equations and apply this knowledge in solving problems, explain the properties of a function, as well as be able to set up, interpret and use some nonlinear functions as models for real processes. To implement these recommendations, it is crucial to understand the students’ way of experiencing quadratic equations and functions, and describe the meaning these have for the students in relation to the possibility they have to their experience of them. The aim of this thesis is to analyse, understand and explain the relation between the handled and learned content, which consists of second-degree equations and quadratic functions, in classroom practice. This means that content is the research object and not the teacher’s conceptions or knowledge of, or about this content. This restriction implies that the handled and learned contents are central in this study and will be analysed from different perspectives. The study includes two teachers and 45 students in two different classes. The data consist of video-recordings of lessons, individual sessions, interviews and the teachers’/researcher’s review of the individual sessions. The students’ tests also constituted an important part of the data collection. When analysing the data, concepts relating to variation theory have been used as analytical tools. Data have been analysed in respect of the teachers’ focus on the lesson content, which aspects are ignored and which patterns of dimensions of variations are constituted when the contents are handled by the teachers in the classroom. Also, data have been analysed in respect of the students’ focus when they solve different exercises in a test situation. It can be shown that the meaning of parameters, the unknown quantity in an equation and the function’s argument change several times when the teacher presents the content in the classroom and when the students solve different exercises. It can also be shown that the teachers and the students develop complicated patterns of variation during the lessons and that the ways in which the teachers open up dimensions of variation play an important role in the learning process. The results indicate that there is a convergent variation leading the students to improve their learning. By focusing on some aspects of the objects of learning and create convergent variations, it is possible for the students to understand the difference between various interpretations of these aspects and thereafter focus on the interpretation that fits in a certain context. Furthermore, this variation leads the students to make generalisations in each object of learning (equations and functions) and between these objects of learning. These generalisations remain over time, despite working with new objects of learning. An important result in this study is that the implicit or explicit arguments of a function can make it possible to discern an equation from a function despite the fact that they are constituted by the same algebraic expression.

This thesis deals with the design of multivariable controllers for stable linear time-invariant multi-input multi-output systems, with an unknown mathematical model, subject to constant reference/disturbance signals and actuator saturation constraints. A new controller parameter optimization approach, which can be carried out experimentally with no knowledge of the plant model nor of the order of the system, is proposed. The approach has the advantage that controllers can be optimized by perturbing only the initial conditions of the servocompensator, and that the order of the resulting controller obtained can be specified by the designer. Implementation of the proposed controller design approach is described, and an experimental application study of the proposed method applied to a multivariable system with industrial sensor/actuator components is presented to illustrate the feasibility of the design method in an industrial environment.

This thesis deals with the design of multivariable controllers for stable linear time-invariant multi-input multi-output systems, with an unknown mathematical model, subject to constant reference/disturbance signals and actuator saturation constraints. A new controller parameter optimization approach, which can be carried out experimentally with no knowledge of the plant model nor of the order of the system, is proposed. The approach has the advantage that controllers can be optimized by perturbing only the initial conditions of the servocompensator, and that the order of the resulting controller obtained can be specified by the designer. Implementation of the proposed controller design approach is described, and an experimental application study of the proposed method applied to a multivariable system with industrial sensor/actuator components is presented to illustrate the feasibility of the design method in an industrial environment.

A novel structural health assessment (SHA) technique is proposed. It is a finite element-based time domain nonlinear system identification technique. The procedure is developed in two stages to incorporate several desirable features and increase its implementation potential. First, a weighted global iteration with an objective function is introduced in the unscented Kalman filter (UKF) procedure in order to obtain stable, convergent, and optimal solution. Furthermore, it also improves the capability of the UKF procedure to identify a large structural system using only a short duration of responses measured at a limited number of dynamic degrees of freedom (DDOFs). The combined procedure is denoted as unscented Kalman filter with weighted global iteration (UKF-WGI). Then, UKF-WGI is integrated with iterative least-squares with unknown input (ILS-UI) in order to increase its implementation potential. The substructure concept is also incorporated in the procedure. The integrated procedure is denoted as unscented Kalman filter with unknown input and weighted global iteration (UKF-UI-WGI). The two most important features of the method are that it does not need information on input excitation and uses only limited number of noise-contaminated response information to identify structural systems. Also, the method is able to identify the defects at the local element level by tracking the changes in the stiffness of the structural elements in the finite element representation. The UKF-UI-WGI procedure is implemented in two stages. In Stage 1, based on the location of input excitation, the substructure is selected. Using only responses at all DDOFs in the substructure, ILS-UI can identify the input excitation time-histories, stiffness parameters of all the elements in the substructure, and two Rayleigh damping coefficients. The outcomes of the first stage are necessary to initiate UKF-WGI. Using the information from Stage 1, the stiffness parameters of all the elements in the structure are identified using UKF-WGI in Stage 2. To demonstrate the effectiveness of the procedure, health assessment of relatively large structural systems is presented. Small and relatively large defects are introduced at different locations in the structure and the capability of the method to detect the health of the structure is examined. The optimum number and location of measured responses are also investigated. It is demonstrated that the method is capable of identifying defect-free and defective states of the structures using minimum information. Furthermore, it can locate defect spot within a defective element accurately. The comparative studies are also conducted between the proposed methods and available methods in the literature. First, it is between the UKF-WGI and extended Kalman filter with weighted global iteration (EKF-WGI) procedure. Then, it is between UKF-UI-WGI and generalized iterative least-squares extended Kalman filter with unknown input (GILS-EKF-UI) procedure, developed earlier by the research team. It is demonstrated that the proposed UKF-based procedures are superior to the EKF-based procedures for SHA.

I denna studie undersöker jag barn i förskolan mellan fyra och fem år. Vad de har för tankar i ett möte med för dem ett okänt djur, vattenloppan. Aktiviteten där jag även ställt frågor till barnen angående bl.a. vattenloppans utseende och livsmiljö. Samtidigt som jag filmat har jag kunnat observera två grupper som möter dessa djur antingen med hjälp av bild och video eller med verkliga djur. Genom att barnen fick dokumentera sitt möte med att måla vad de varit med om har jag kunnat få en bild om hur barnen uppfattat djuren. Resultatet visa att flera barn i gruppen som fick uppleva de riktiga djuren kunde detaljera sina upplevelser via deras teckningar. Bildgruppen visade dessutom sämre perceptionsförmåga då de hade en vag bild om vattenloppans storlek och att flera barn såg vattenloppans antenner som vassa och farliga tänder. / In this study, I examine children in preschool between four and five years old. What they have in mind in a meeting with them an unknown animal, water flea. The activity where I asked the children about such as the water fleas appearance and habitat while I was filming, I have been able to do an observation in two groups that could watch these animals either by image and video or as living animals. The children got afterwards documenting his meeting with painting, I was able to get a picture of how the children understood the animals. The results show that several children in the group who got to experience the real animals could detail their experiences through their artwork. The Picture group also showed poorer perception since they had a vague idea about the water flues size and that several children misunderstood the water flues antennas for sharp and dangerous teeth.