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Dissertations / Theses on the topic 'Parallelogram'
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Kienhuis, Anne Susan. "Prediction of hepatotoxic responses in humans:a toxicogenomics-based parallelogram appraoch." Maastricht : Maastricht : Universiteit Maastricht ; University Library, Universiteit Maastricht [host], 2008. http://arno.unimaas.nl/show.cgi?fid=9706.
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Chesters, Graeme S., and I. Welsh. "The death of collective identity? Global movement as a parallelogram of forces." International Centre for Participation Studies, 2007. http://hdl.handle.net/10454/3799.
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yesThis paper brings together a number of theoretical and political interests we have with the concept of global movements and the alter-globalisation, anticapitalist, and social justice movements in particular (Chesters & Welsh, 2004, 2005, 2006). The argument contained in this paper is that these movements are the emergent outcome of complex processes of interaction, encounter and exchange facilitated and mediated by new technologies of mobility and communication and they suggest the emergence of a post-representational cultural politics qualitatively different from the identity based social movements of the past.
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Deb, Sagarmay. "Content-based image retrieval based on emergence index." University of Southern Queensland, Faculty of Sciences, 2003. http://eprints.usq.edu.au/archive/00001420/.
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Emergence is a phenomenon where we study the implicit or hidden meaning of an image. We introduce this concept in image database access and retrieval of images using his as an index for retrieval. This would give an entirely different search outcome than ordinary search where emergence is not considered, as consideration of hidden meanings could change the index of search. A feature of an image, which is not explicit would be emergent feature if it can be made explicit. There are three types of emergence: computational emergence, thermodynamic emergence and emergence relative to a model. In computational emergence, it is assumed computational interactions can generate different features or behaviors. This is one of the approaches in the field of artificial life. Thermodynamic emergence is of the view that new stable features or behaviors can arise from equilibrium through the use of thermodynamic theory. In emergence relative to a model, deviation of the behavior from the original model gives rise to emergence. We would use this latter view in our work. Two classes of shape emergence have been identified: embedded shape emergence and illusory shape emergence. In embedded shape emergence all the emergent shapes can be identified by set theory procedures on the original shape under consideration. For example, in a set S= {a,b,c,d,e}, we can find subsets like S1={a,b,c}, S2={c,d,e}, S3={a,c,e} and so on. But in illusory shape emergence, where contours defining a shape are perceived even though no contours are physically present, this kind of set theory procedures are not enough and more effective procedures have to be applied to find these hidden shapes. These procedures could be based on geometrical, topological or dimensional studies of the original shape. Content-based Image Retrieval (CBIR) techniques, so far developed, concentrated on only explicit meanings of an image. But more meanings could be extracted when we consider the implicit meanings of the same image. To find out the implicit meanings, we first destroy the shape of the original image which gives rise to unstructured image. Then we process the unstructured image to bring out the new emergent image. We discuss emergence, calculation of emergence index and accessing multimedia databases using emergence index in this dissertation. To calculate emergence index in the access of multimedia databases, we take an input image and study the emergence phenomenon of it. Also we study the emergence phenomenon of the images of the database. Both input image and images of database would give rise to more meanings because of emergence as we explained earlier. Based on the new meanings, wherever there would be a match between input image and images of database, we would pick that record up for selection. We defined emergence index as EI = f(D,F,V,C,E) where D stands for domain of the database, F for features of the image, V for various variables that define the image, C for constraints which represent the image and E for emergence phenomenon. We calculate these five variables to get emergence index for each image of the database. Also we calculate these five variables for input image as well. We talk about global aspects of features. It means features of the entire image. Examples are area, perimeter or rectangles, triangles. In some searches, to consider the global features could be advantageous in that a symmetry with the input image could be obtained on the basis of global features only. But as is clearly the case, to consider global features could overlook the individual objects that constitute the image as a whole. In the kind of searches we propose, we take into account the global features of the image of the database while considering in detail local features. Various objects that lie within an image constitute local features. In our example, there are three objects in the image, namely, a lake and two houses. Studying the features of these three objects would add to studying the features of the image globally. We took the example of a geographic location in the thesis and then showed how destruction of original image is done and further processing of the unstructured image gives new emergent image. Partial implementation of this concept is also presented at the end. In implementation, we consider the retrieval of image globally. We do not consider break-up of image into multiple objects which is left for future research.
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Stangier, Stefanie D. "Theoretical and experimental investigation of the free vibration of parallelogram plates with simply supported and clamped boundary conditions." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq28462.pdf.
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Vokál, Miroslav. "Manipulátor pro manipulaci s velkonábalem." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231470.
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This work deals with the construction of a specific device for handling batching, such as paper rolls wound on a paper tube. It is included in the structural design of the device, control engineering calculations nodes developed basic drawing documentation manipulator.
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Струтинський, В. Б., and А. С. Дем'яненко. "Дослідження кінематики модельного паралелограмного механізму методом замкнених векторних контурів." Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/38144.
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З метою підвищення точності верстата паралельної кінематики, було запропоновано розробити систему поточного контролю просторового положення платформи з замкненим вимірювальним контуром.
При реалізації замкнених вимірювальних контурів, бажано використовувати вимірювальну апаратуру, що дає можливість безпосередньо визначати параметр, який контролюється. Переміщення платформи верстата паралельної кінематики з шістьма штангами змінної довжини у просторі залежить від видовження силових штанг верстата. Відповідно, поставлена задача - контролювати видовження кожної штанги верстата.
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Fankhänel, Andreas. "Metrical Problems in Minkowski Geometry." Doctoral thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-95007.
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In this dissertation we study basic metrical properties of 2-dimensional normed linear spaces, so-called (Minkowski or) normed planes.
In the first chapter we introduce a notion of angular measure, and we investigate under what conditions certain angular measures in a Minkowski plane exist. We show that only the Euclidean angular measure has the property that in an isosceles triangle the base angles are of equal size. However, angular measures with the property that the angle between orthogonal vectors has a value of pi/2, i.e, a quarter of the full circle, exist in a wider variety of normed planes, depending on the type of orthogonality. Due to this we have a closer look at isosceles and Birkhoff orthogonality. Finally, we present results concerning angular bisectors.
In the second chapter we pay attention to convex quadrilaterals. We give definitions of different types of rectangles and rhombi and analyse under what conditions they coincide. Combinations of defining properties of rectangles and rhombi will yield squares, and we will see that any two types of squares are equal if and only if the plane is Euclidean. Additionally, we define a ``new\'\' type of quadrilaterals, the so-called codises. Since codises and rectangles coincide in Radon planes, we will explain why it makes sense to distinguish these two notions. For this purpose we introduce the concept of associated parallelograms.
Finally we will deal with metrically defined conics, i.e., with analogues of conic sections in normed planes. We define metric ellipses (hyperbolas) as loci of points that have constant sum (difference) of distances to two given points, the so-called foci. Also we define metric parabolas as loci of points whose distance to a given point equals the distance to a fixed line. We present connections between the shape of the unit ball B and the shape of conics. More precisely, we will see that straight segments and corner points of B cause, under certain conditions, that conics have straight segments and corner points, too. Afterwards we consider intersecting ellipses and hyperbolas with identical foci. We prove that in special Minkowski planes, namely in the subfamily of polygonal planes, confocal ellipses and hyperbolas intersect in a way called Birkhoff orthogonal, whenever the respective ellipse is large enough.
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Matela, Milan. "Konstrukční úpravy koherencí řízeného holografického mikroskopu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230612.
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The aim of diploma thesis are modifications in mechanical design of the coherence controlled holographic microscope which will lead to reduction of some deficiencies. In this thesis there is a brief description of the history interference microscopy and differences between each types of interference microscopes. In this work there are stated some design deficiencies of actual condition of the microscope and also several solutions are suggested and shortly described. Then the best solution is chosen which is adjusted to a final form. It is described in detail and then realized. There is a summary included in the conclusion whether the new solution is suitable and if it fulfills the required condition.
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Стукало, Оксана Анатоліївна. "Багатоланковий плоский механізм на базі механізму переміщення матеріалу швейних машин для виконання стібків класу 300." Магістерська робота, Київський національний університет технологій та дизайну, 2021. https://er.knutd.edu.ua/handle/123456789/18752.
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Робота присвячена аналізу різних структур механізму переміщення матеріалів швейної машини для виконання стібків класу 300. Аналізу механізму зубчастої рейки човникових швейних машин, опису функцій положення та синтезу зубчастої рейки за критерієм міцності. В роботі проаналізовані механізми переміщення матеріалів швейної машини, отримані математичні моделі, що описують функції положення рухомих ланок та характерних точок. Виконані комбінований оптимізаційний кінематичний синтез механізму, комп’ютерне моделювання механізму в програмі Mathcad. Побудовані суміщені графіки траєкторій типового та нового механізмів переміщення матеріалів швейної машини. Проаналізована схема механізму переміщення матеріалів з двома коромислами, яка забезпечує одночасний вихід всіх зубців транспортуючої рейки над поверхнею голкової пластини, а також аналогічне опускання їх після переміщення матеріалу. Застосування нового механізму переміщення матеріалів забезпечує якісне виконання процесу переміщення, без пошкодження матеріалу, та стабільність довжини стібка.The work is devoted to the analysis of different structures of the mechanism of movement of materials of the sewing machine for performance of stitches of a class 300. The mechanisms of movement of materials of the sewing machine are analyzed in the work, the mathematical models describing functions of position of moving links and characteristic points are received. Combined optimization kinematic synthesis of the mechanism, computer modeling of the mechanism in the Mathcad program are executed. Combined graphs of trajectories of typical and new mechanisms of movement of materials of the sewing machine are constructed. The scheme of the mechanism of movement of materials with two rockers which provides simultaneous exit of all teeth of a transporting rail over a surface of a needle plate, and also their similar lowering after movement of material is analyzed. The use of a new mechanism for moving materials ensures high-quality execution of the movement process, without damaging the material, and the stability of the stitch length.
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Прядко, Ігор Олександрович. "Багатоланковий плоский механізм на базі механізму переміщення матеріалу швейних машин для виконання стібків класу 400." Магістерська робота, Київський національний університет технологій та дизайну, 2021. https://er.knutd.edu.ua/handle/123456789/18755.
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Робота присвячена аналізу плоских важільних механізмів з ступенем вільності W=2. В межах роботи виконано кінематичний синтез, аналіз та силовий розрахунок важільних механізмів базової конструкції та механізму зубчастої рейки раціональної конструкцій. Зважаючи на типову конструкцію механізмів зубчастої рейки краєобметувальних машин, конструкція механізму була обрана з урахуванням особливостей механізму зубчастої рейки швейної машини 208 кл. ПМЗ (Росія). В результаті проведення динамічного аналізу, який проводився при максимальній швидкості обертання головного валу технологічного обладнання, були встановлені місця, які є найбільш слабкими. Найбільш навантажена деталь в усіх механізмах, за характеристиками найбільших напружень, є шатун зубчастої рейки, при цьому зона найбільших навантажень припадає на переході до передньої головки шатуна. В новій конструкції шатуна, який виконаний вилкоподібним, було враховано конструктивно зміни форми, що призвело до зниження навантаження, а також призвело до підвищення коефіцієнту запасу міцності. Запропонована конструкція механізму може бути застосована для модернізації діючого обладнання або розробки нового. Застосування нового механізму переміщення матеріалів забезпечує якісне виконання процесу переміщення та необхідну міцність.The work is devoted to the analysis of flat lever mechanisms with the degree of freedom W = 2. Within the work kinematic synthesis, analysis and force calculation of lever mechanisms of the basic structure and the mechanism of the toothed rack of rational structures were performed. Due to the typical design of the mechanisms of the toothed rack of edging machines, the design of the mechanism was chosen taking into account the features of the mechanism of the toothed rack of the sewing machine 208 cl. PMZ (Russia). As a result of the dynamic analysis, which was carried out at the maximum speed of rotation of the main shaft of the process equipment, the weakest places were identified. The most loaded part in all mechanisms, according to the characteristics of the highest stresses is the connecting rod of the rack, while the zone of greatest loads falls on the transition to the front head of the connecting rod. The new design of the connecting rod, which is made of a fork, took into account structural changes in shape, which led to a decrease in load, as well as led to an increase in the coefficient of strength. The proposed design of the mechanism can be used to upgrade existing equipment or develop new ones. The use of a new mechanism for moving materials ensures high-quality execution of the movement process and the necessary strength.
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SANTOS, Marilene Rosas dos. "Resolução de problemas envolvendo área de paralelogramo : um estudo sob a ótica do contrato didático e das variáveis didáticas." Universidade Federal Rural de Pernambuco, 2005. http://www.tede2.ufrpe.br:8080/tede2/handle/tede2/5929.
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This research had the objective to investigate the possible relation between the concept of parallelogram area in a didactic book collection for the last grades of elementary school and the procedures used by students of an 8th grade class in the solutions to the problems related to this theme. The theoretical fundation is based on the model of area as magnitude, as it is in the works of Douady & Perrin-Glorian and Bellemain & Lima and in Theory of didactic situations developed by Brousseau and his disciple, particulary by the notions of didactic contract and didactic variables. The methodological procedures inspired by Bessot & Le Thi Hoai, consisted on the analysis of a collection of didactic Mathematics books, followed by the application of a test with students, users of the books. Twenty-one students of an 8th grade class of a federal public elementary school took part in this research in the city of Recife. The activities proposed were made in order to look alike on the books, but breaking with some rules of the didactic contract suppose standing the value of the didactic variables identified it was, in the time predominant in the didactic book collection, in the time value not used. The analysis of results indicated convergence and divergence among the abordage of the books and procedures by the students about the parallelogram area. For example, in the collection like in the procedures of the students, the side like base is generally the horizontal side (also when it´s not aborded the greatest side). The didactic book analyzed for beginning the measure of area only in a posterior moment worked the constancy of the area for decomposition and composition. This choice is against that one indicated in literature revision by the premature association of the surface to a number help the confusion between the magnitude length and area. Contrary to our expectation, on the activities proposed to great part of the students showed to discolour area and perimeter.
Esta pesquisa teve por objetivo investigar as possíveis relações entre a abordagem da área do paralelogramo em uma coleção de livros didáticos para as séries finais do ensino fundamental e os procedimentos utilizados pelos alunos de uma 8ª série na resolução de problemas relativos a esse tema. A fundamentação teórica está alicerçada no modelo de área como grandeza, proposto nos trabalhos de Douady & Perrin-Glorian e Bellemain & Lima e na Teoria das Situações Didáticas desenvolvida por Brousseau e seus seguidores, particularmente nas noções de contrato didático e variável didática. Os procedimentos metodológicos inspirados em Bessot & Le Thi Hoai, consistiram na análise de uma coleção de livros didáticos de Matemática, seguida da aplicação de um teste com alunos, usuários dos livros. Participaram desta pesquisa 21 alunos da 8ª série de uma escola pública da cidade do Recife. As atividades do teste foram elaboradas de forma que rompessem com algumas regras de contrato didático supostamente vigente e os valores das variáveis didáticas identificadas fossem ora aqueles predominantes na coleção de livros didáticos, ora valores não habituais. As análises dos resultados indicaram convergências e divergências, entre a abordagem dos livros e os procedimentos dos alunos referentes à área do paralelogramo. Por exemplo, tanto na coleção como nos procedimentos dos alunos, o lado tomado como base é geralmente o horizontal (mesmo quando não se trata do lado de maior comprimento). Os livros didáticos analisados focalizam inicialmente a medida de área e apenas em um momento posterior trabalham a invariância da área por decomposição e recomposição. Esta escolha diverge daquela indicada na revisão de literatura segundo a qual a associação precoce da superfície a um número favorece a confusão entre as grandezas comprimento e área. Contrariamente à nossa expectativa, nas atividades propostas a maioria dos alunos mostrou distinguir área e perímetro.
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Kaše, Vladimír. "Zdvihací a manipulační zařízení pro podvěsné příslušenství letadla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230373.
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The thesis is dealing with the design proposal of mobile handling equipment for the aircrafts´ overhead accessory. In its initial part it describes different types of manipulators in use, following by several possibilities how to solve the problematics. The main part of the thesis is focused on concrete solution and construction of such manipulating facility, including the strength and control calculations.
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Vítek, Jan. "Manipulátor v lince na ohřev výřezů dřeva." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417070.
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This thesis concerns with construction design of manipulator. The purpose of the manipulator is to transport beech logs. It is a part of the production line for heating and steaming veneering of the logs before their subsequent processing. This thesis presents a new design solution. It offers detailed descriptions of the purpose of the construction and of individual functional assemblies. It also describes the means for operating the machine and the types of sensors used. Calculation of forces and reactions in the mechanism, based on a simplified load calculation model, constitutes an important part of the work. Design of key components of the machine is then based on the results of the analysis of the forces involved. The supplements of the thesis include photographs of the manipulator realization and selected technical design.
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Laborde-Zubieta, Patxi. "Combinatoire de l’ASEP, arbres non-ambigus et polyominos parallélogrammes périodiques." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0709/document.
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Cette thèse porte sur l’interprétation combinatoire des probabilitésde l’état stationnaire de l’ASEP par les tableaux escaliers, sur les arbresnon-ambigus et sur les polyominos parallélogrammes périodiques.Dans une première partie, nous étudions l’ansatz matriciel de Derrida,Evans, Hakim et Pasquier. Toute solution de ce système d’équation permet decalculer les probabilités stationnaires de l’ASEP. Nos travaux définissent denouvelles récurrences équivalentes à celles de l’ansatz matriciel. En définissantun algorithme d’insertion sur les tableaux escaliers, nous montrons combinatoirementet simplement qu’ils les satisfont. Nous faisons de même pour l’ASEPà deux particules. Enfin, nous énumérons les coins dans les tableaux associésà l’ASEP, nous permettant ainsi de donner le nombre moyen de transitionspossibles depuis un état de l’ASEP.Dans une deuxième partie, nous calculons de jolies formules pour les sériesgénératrices des arbres non-ambigus, desquelles nous déduisons des formulesd’énumérations. Puis, nous interprétons bijectivement certains de ces résultats.Enfin, nous généralisons les arbres non-ambigus à toutes les dimensions finies.Dans la dernière partie, nous construisons une structure arborescente surles polyominos parallélogrammes périodiques, inspirée des travaux de Boussicault,Rinaldi et Socci. Cela nous permet de calculer facilement leur sériegénératrice selon la hauteur et la largeur ainsi que deux nouvelles statistiques :la largeur intrinsèque et la hauteur de recollement intrinsèque. Enfin, nousétudions l’ultime périodicité de leur série génératrice selon l’aireThis thesis deals with a combinatorial interpretation of the stationnarydistribution of the ASEP given by staircase tableaux and studiestwo combinatorial objects : non-ambiguous trees and periodic parallelogrampolyominoes.In the first part, we study the matrix ansatz introduced by Derrida, Evans,Hakim and Pasquier. Any solution of this equation system can be used tocompute the stationnary probabilities of the ASEP. Our work defines newrecurrences equivalent to the matrix ansatz. By defining an insertion algorithmfor staircase tableaux, we prove combinatorially and easily that they satisfyour new recurrences. We do the same for the ASEP with two types of particles.Finally, we enumerate the corners of the tableaux related to the ASEP, whichgives the average number of transitions from a state of the ASEP.In the second part, we compute nice formulas for the generating functionsof non-ambiguous trees, from which we deduce enumeration formulas. Then, wegive a combinatorial interpretation of some of our results. Lastly, we generalisenon-ambiguous trees to every finite dimension.In the last part, we define a tree structure in periodic parallelogram polyominoes,motivated by the work of Boussicault, Rinaldi and Socci. It allowsus to compute easily the generating function with respect to the height andthe width as well as two new statistics : the intrinsic width and the intrinsicgluing height. Finally, we investigate the ultimate periodicity of the generatingfunction with respect to the area
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Santos, Edson Henrique dos. "Uma aplicação de produto alternado em R³ usando vetores." Mestrado Profissional em Matemática, 2017. https://ri.ufs.br/handle/riufs/6531.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESIn this work, we will present vectors from its relation with a oriented segment, its main operations, linear combination, linear dependence and base, up to the alternating product part. We relate the alternating product of two vectors with the area of the parallelogram formed by them, as well as the alternating product of three vectors with the volume of the parallelepiped. We also show that the vector product and the mixed product are special cases of alternating product.
Neste trabalho, apresentaremos vetores desde a sua relação com um segmento orientado, suas principais operações, combinação linear, dependência linear e base, até a parte de produto alternado. Relacionamos o produto alternado de dois vetores com área do paralelogramo formado por eles, assim como, o produto alternado de três vetores com o volume do paralelepípedo. Mostramos ainda que o produto vetorial e o produto misto são casos especiais de produto alternado.
São Cristóvão, SE
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Duarte, Valdenir Francisco. "Um estudo sobre propriedades do paralelogramo envolvendo o processo de argumentação e prova." Pontifícia Universidade Católica de São Paulo, 2007. https://tede2.pucsp.br/handle/handle/11287.
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Previous issue date: 2007-12-10This work, carried out as part of the research project AprovaME developed at the Pontifical Catholic University of São Paulo, has as its aim to verify the advances and the difficulties presented by students in the elaboration of proofs related to the properties of parallelograms. The research procedures adopted during the study drew from the theories of de Parzysz (2001) concerning formal and empirical proofs; the four dimensions involved in the construction of geometrical thinking perception, representations, construction and conception presented by Machado (1995); the representation of information from the point of view of Duval (1995); and the considerations related to logical sequences in Duval e Egret (1989). Using the methodology Didactical Engineering, a sequence of activities was designed and carried out with two groups of students. One group was composed of 8th grade Middle School students and the second of students from the first year of High School. The activity sequence was planned to involve students in, first, the construction of hypotheses and theses on the basis of empirical explorations and, in term, organise, in a deductive form, their propositions in order to elaborate proofs of various properties of parallelograms. The analysis of the students productions illustrates difficulties experienced in the process of argumentation and proof that can be grouped into three categories: difficulties related to the elaboration of proofs, difficulties associated with the acceptance of empirical arguments and difficulties linked to problems in interpreting the problems proposed. The analysis also suggested that as the activity sequence progressed, certain advances in relation to these difficulties occurred. Some students began to carry out calculations without needing to consider particular cases, others presented complete formal proofs and even those who produced incomplete proofs made use of logical reasoning in attempts to express valid arguments. In addition, a positive factor related to the activity sequence was the engagement of students in the analysis of proofs constructed by others
O presente trabalho, vinculado ao projeto AprovaME, desenvolvido na Pontifícia Universidade Católica de São Paulo, tem por objetivo verificar os avanços e as dificuldades apresentadas pelos alunos na elaboração de provas sobre as propriedades dos paralelogramos. Os procedimentos dessa pesquisa foram fundamentados nas teorias de Parzysz (2001) sobre provas formais e empíricas; Machado (1995) sobre as quatro dimensões da construção do pensamento geométrico: percepção, representação, construção e concepção; Duval (1995) sobre formas de representação de informações; Duval e Egret (1989) sobre seqüências lógicas. Usando a metodologia da Engenharia Didática, foram concebidas e aplicadas a alunos da oitava série do Ensino Fundamental e do primeiro ano do Ensino Médio, uma seqüência de atividades que visaram levá-los, de forma empírica, a construir o conceito de hipótese/tese e, de forma dedutiva, a ordenar proposições de modo a elaborar provas das propriedades dos paralelogramos. A análise das produções dos alunos mostra dificuldades no processo de argumentação e prova que podem ser agrupadas em três categorias: dificuldades ligadas à elaboração de uma prova, dificuldades oriundas da aceitação de provas empíricas e dificuldades ligadas à leitura e interpretação de enunciados. A análise também apontou que houve certos avanços nesse processo. Alunos realizaram cálculos sem o apoio empírico, outros apresentaram algumas provas formais completas, e mesmo aqueles que produziram provas incompletas mostraram um raciocínio lógico até o ponto onde elas foram feitas. Além disso, verificou-se que o fato de dois alunos poderem analisar a prova feita pela outra dupla foi um fator muito positivo na seqüência apresentada
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Liang, Yu Zheng, and 梁郁政. "Parallelogram-free distance-regular graphs." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/96708004459745378453.
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Kania, Iris. "Exploring the parallelogram of responsibilities." Master's thesis, 2019. http://hdl.handle.net/10071/19634.
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Businesses are facing the challenges of a shortage of highly skilled workforce and shifting demands for corporate social responsibility for employees. Research has shown that a lack of fulfilling employees' needs leads to a gap in employee engagement, which eventually causes employee turnover costs. To avoid these costs and maintain a competitive workforce, businesses must find a different way to approach the needs of employees and the rising demand for CSR. This study aims to find a new approach for addressing the satisfaction of employees' needs through CSR strategies. Thus, his research will try to find an answer to the question: Is it possible to find a positive reciprocity between a strategic CSR approach addressing employees and the satisfaction of the employees' needs in order to increase employee engagement?
Based on the literature review on Maslow's Hierarchy of Needs and Carroll's Pyramid of CSR and the factor employee engagement, two case studies were conducted with a qualitative research method of semi-structured interviews and analysed based on determined factors. The analysis of the interviews indicated the existence of a positive as well as negative reciprocity within the Parallelogram of Responsibilities, which was derived as a new model approach derived from the findings of the literature research. The results indicate that a high satisfaction of needs lead to a high demand of CSR responsibilities. On this basis it is concluded that businesses, who want to attract and maintain a highly skilled workforce, need an implemented CSR strategy regarding employees.As empresas enfrentam atualmente desafios resultantes de um número cada vez menor de mão-de-obra altamente qualificada e a necessidade de responsabilidade social corporativa das gerações futuras. Uma pesquisa mostrou que a insatisfação dos funcionários leva à falta de envolvimento dos mesmos, o que geralmente gera custos associados à alta rotatividade. Para evitar estes custos e manter uma mão-de-obra competitiva, as empresas devem encontrar uma forma diferente de encarar as necessidades dos seus colaboradores e a procura crescente por RSC (Responsabilidade Social Corporativa). O presente estudo visa encontrar uma nova forma de satisfazer as necessidades desses colaboradores através de estratégias de RSC. Portanto, este estudo tentará encontrar a resposta para a pergunta: É possível obter uma reciprocidade positiva entre estratégias de RSC direcionada aos colaboradores e satisfazer suas necessidades visando obter maior envolvimento? Baseado nos estudos da Hierarquia das Necessidades de Maslow, a Pirâmide da RSC de Carroll e os fatores de envolvimento dos funcionários, dois estudos de caso foram conduzidos com um método de pesquisa qualitativa de entrevistas semi-estruturadas e analisadas com base em fatores determinados. A análise das entrevistas indicou a existência de uma reciprocidade tanto positiva quanto negativa no Paralelogramo de Responsabilidades, que foi derivado como uma nova abordagem modelo, vinda das descobertas feitas na literatura. O resultado indica que aumentar a satisfação das necessidades leva a uma maior procura por RSC. Com base nisso, conclui-se que as empresas que desejam atrair e manter uma força de trabalho altamente qualificada, necessitam de uma estratégia de RSC direcionada ao seus colaboradores.
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Chi, Chun-Chou, and 紀俊州. "A Study of Sixth Graders’ Area Concept of Parallelogram." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/82592832467239983807.
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碩士國立臺中教育大學
數學教育學系在職進修教學碩士學位班
94
The purpose of this study is to explore sixth graders’ knowledge of area concept of parallelogram. The researcher developed a test about area concept of parallelogram and used item relation structure analysis (IRS) to analyze the results and to form the structural graph. A class of sixth graders in Taichung County participated in this study. After testing, the researcher used IRSP and IRS to analyze the data, and hoped to get some information about students’ area concept of parallelogram presented in the item relation structural graph. According to the structural graph, the results from this study are as follows: 1.The recognition concept of parallelogram The structural graph shows that the sixth graders have the recognition concept first and then they understand the characters of shapes. 2.The conservation concept of parallelogram area There is no sequential relation between the conservation concept of area equality and the conservation concept of cutting and piecing area, it means that the two concepts are independent. 3.The measurement concept of parallelogram area The test questions with same type were classified into six sub-concept types : Type 1: The sub-concept structural graph of “base and height corresponding relation” shows that the sixth graders possess the concept of base and height corresponding relation putting in the right place first and then they understand the concept of base and height corresponding relation putting in different place. Type 2: The sub-concept structural graph of “the ability of cutting, piecing and covering the shapes” shows that the sixth graders possess the ability of covering shapes first and then they have the concept of figuring. Type 3: The sub-concept structural graph of “the conversion of area unit” shows that the conversion of area unit are related. Type 4: The sub-concept structural graph of “the different shape concept of equal area” shows that when the area concept with same base, same height and different shape accords with the parallelogram area of word problem, the change of base and height is related. Type 5: The sub-concept structural graph of “area formula of calculating problem” shows that the concept has two series. One is the sixth graders should possess the area formula concept of parallelogram first and then they understand the calculating concept of area formula. The other is the sixth graders possess the area formula concept of parallelogram first and then they can understand the minus concept of two shapes and they can compare more shapes. Type 6: The sub-concept structural graph of “area formula of application problem” shows that the sixth graders possess the concept of calculating height and base first, calculating the multiple concept of two parallelograms and then they calculate the height and area of two shapes. 4.The estimation concept of parallelogram area The structural graph shows that the sixth graders have the estimation concept for bigger shapes first and then they possess the estimation concept for smaller shapes. 5.The problem-solving application concept of parallelogram area The structural graph shows that there is a relation between the piecing concept of parallelogram and the piecing concept of rectangle. Based on the above results, some suggestions were proposed for teachers and further studies.
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yao, cheng-huei, and 姚振徽. "Study on digital redesigning analogy controller by numerical integration of parallelogram." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/03281915433856074651.
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碩士中正理工學院
電機工程研究所
86
The paper use numerical integration of parallelogram to derive equivalent transform method from s analogy domain to z discrete domain, and use the method, could make analogy controller to be digital redesigned to digital controller, and constitute a digital control system with plant which actuated and digitized by zero-order- hold, so the time responses of the digital control system are more better than current useful bilinear transform in industry and often useful numerical integration, and could tolerate larger sampling period, enable system to still maintain stability in larger sampling period, not easy to distort and diverge, therefore could increase system stability, and could also approach and correspond with each response of analogy control system, so it could apply to wider digital control system. Contain adjustable parameter n in the digital transform method of numerical integration of parallelogram, come to adjust better parameter n in following different characteristic analogy controller, and the new method will be transformed into backward, forward and bilinear transform for practical system demand in adjusting parameter n process, and the digital simulative parameter s is most approached actual analogy parameter s, so enable time and frequency responses of the digitized control system in different sampling period to more better correspond with the responses of analogy system, and it could also increase system stability, so the flexibility and suitability of the digitized control system are more better. Understand the point of sensitivity in the paper researched process, whereas if degraded sensitivity of system responses for major parameter, so could increase system stability, in every current theories, papers, books about analysis of system sensitivity, only limit to analogy system side, but digital system side, not to detailed analyze, interpret, check about system sensitivity yet, come to analyze sensitivity of digital system by the definition and formula sensitivity, and check each sensitivity of parallelogram that total digital control system response for sampling period is more lower than other often useful numerical integration, so could tolerate larger sampling period, enable digitized control system to maintain stability and degrade error. From the analysis and comparison of digital simulative parameter s with actual analogy parameter s in each digital transform method, and the theory of s plane mapping z plane, come to anticipative judge which time, frequency responses and stabilities of digital control system in each digital transform method are more better, practically this is the other judicious standard in digital control system.
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Mansur, ABDALLA. "Instability of Periodic Orbits of Some Rhombus and Parallelogram Four Body Problems." Thesis, 2012. http://hdl.handle.net/1974/7650.
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The rhombus and parallelogram orbits are interesting families of periodic solutions, which come from celestial mechanics and the N-body problem. Variational methods with finite order symmetry group are used to construct minimizing non-collision periodic orbits.
We study the question of stability or instability of periodic and symmetric periodic solutions of the rhombus and the equal mass parallelogram four body problems. We first study the stability of periodic solutions for the rhombus four body problem. An analytical description of the variational principle is used to show that the homographic solutions are the minimizers of the action functional restricted to rhombus loop space [23]. We employ techniques from symplectic geometry and specifically a variant of the Maslov index for curves of Lagrangian subspaces along the minimizing rhombus orbit to prove the main result, Theorem 4.2.2, which states that the reduced rhombus orbit is hyperbolic in the reduced energy manifold when it is not degenerate.
We second study the stability for symmetric periodic solutions of the equal mass parallelogram four body problem. The parallelogram family is a family of Z_2× Z_4 symmetric action minimizing solutions, investigated by [7]. In this example, the minimizing solution [7] can be extended to a 4T-periodic solution using symmetries through square and collinear configurations. The Maslov index of the orbits is used to prove the main result, Theorem 5.3.1, which states that the minimizing equal mass parallelogram solution is unstable when it is non-degenerate.Thesis (Ph.D, Mathematics & Statistics) -- Queen's University, 2012-11-26 11:30:29.688
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Liu, Hsiao-Yun, and 劉筱勻. "A study of 8th grade students\' exploration of parallelogram in Geogebra environment." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/3cghpy.
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碩士國立清華大學
數理教育研究所
107
The purpose of this study is to explore the history of eighth-grade students in the dynamic geometry GeoGebra environment. Based on the above research purposes, the following questions are to be explored in this study: 1. The course of the eighth-grade students in the dynamic geometry software GeoGebra to explore the nature of parallelograms? 2. What is the analysis of the drag and measurement of the dynamic geometry software GeoGebra in the eighth grade? This study is convenient for sampling. The main research object is seven eighth-grade students from a certain country in Hsinchu City. The research method used in this study is a case study method for data collection and analysis. The research tools of this research are: dynamic geometry software GeoGebra, semi-structure interview. The conclusions of this study are as follows: 1. The geometric properties directly related to the definition of the parallelogram can be stated before the operation. 2. The geometry of the parallelogram proposed before the operation can be verified on the interface of the dynamic geometry software GeoGebra. 3. Other parallelogram geometry properties can be proposed by manipulating the dynamic geometry software GeoGebra to change the shape of the figure. 4. During the operation of the dynamic geometry software GeoGebra, the types of drag and measurement used in the case are limited. Keywords: parallelogram, dynamic geometry software, GeoGebra, geometric properties, drag, measurement, parallelograms.
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Wang, Po-Chen, and 汪柏辰. "Design of 2-bar and 4-bar Parallelogram Mechanism with Load Adjusting Ability." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/24150760971659961814.
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碩士國立臺灣大學
機械工程學研究所
99
ABSTRACT The design of 2-bar and 4-bar parallelogram mechanism with load adjusting ability is presented. A mechanism which sustains the load, and compensates the effect of gravity is called “Gravity Equilibrator”. A gravity equilibrator can be moved in corresponding to the direction of gravity effortlessly and achieve static balance in any position at the same time. The design in this paper is therefore based on the 2-bar and 4-bar parallelogram mechanisms which compensate variable load of the mechanism. Through employing the methodology of conservation of potential energy, and by analyzing the variation of potential energy of 2-bar mechanism while the load and the angle between bars are varied, the spring potential energy can thus be obtained. The installation of springs on 2-bar mechanism can thus be gained by the spring potential energy. Since the 4-bar parallelogram mechanism is similar to the 2-bar mechanism, the spring installation on the 2-bar can then also be applied to the 4-bar parallelogram mechanism.
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YOU, SHR-BIN, and 游世斌. "A study on structure analysis of elementary school fifth graders’ concept of parallelogram." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/77878569360943350682.
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碩士國立臺中教育大學
數學教育學系在職進修教學碩士學位班
95
Abstract The purpose of this study was to develop conceptual papers regarding parallelogram;by using Item Relational Structure (IRS) to analyze the test result, the study was able to form a structural graph in order to examine the elementary school fifth grader’s knowledge concept about parallelogram. The study was conducted in two fifth grade classes from a elementary school in Taichung County.After the examination, the theory of IRS and IRSP computer program will be used in order to analyze the results of examination. The prospect of this study is to gain inspirations by looking at the structural graph of the examination result of school children’s conceptual understanding regarding parallelogram. According to the result of the structural graph, the conclusion of this study are as follow: By comparing school children’s knowledge structure graph with professional knowledge structure graph, the study concluded the order of parallelogram sub-concept development of school children. （1） the concept of angle 1. The sum of interior angles is 360 degree. à The sum of exterior angles is 360 degree. 2. The diagonal angles are equal. à The adjacent angles are complementary. （2）the concept of length of sides 1. The length of each pair of diagonal sides is equal. à The formula of length of sides 2. Each pair of diagonal sides is parallel. à An area can be measured by the formula: the length of base multiplied by the length of height. àDifferentiating between base and length （3）the concept of area 1. area measuring; àarea estimating; àapplying area item solving skills It was found that the school children were very often confusing the formula of length of sides with that of area. According to the structural graph of the result, it suggests that there are no obvious development in connections between the concept of parallelogram and concept of sides and area. Few suggestions were made accordingly from the conclusion above, they are offered for instructors and further studies. Keywords： the concept of parallelogram, item relational structure analysis, IRSP
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Lan, I.-An, and 蘭宜安. "An experimental study of thermal performance of radially rotating two-pass parallelogram ribbed channel." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/hj5emt.
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博士國立清華大學
動力機械工程學系
107
This work employed the infrared thermography method to measure the detailed Nusselt number (Nu) distributions on the leading and the trailing endwalls, as well as detected the Fanning friction factors (f), of a two-pass parallelogram ribbed channel at static and rotating conditions. This research investigated the isolated and interdependent effects of Reynolds number (Re), rotation number (Ro) and buoyancy number (Bu) influences on local and regionally averaged Nu and channel averaged f for the present static and rotating two-pass parallelogram channel with detached and attached transverse ribs. The present two-pass parallelogram test channel was equilateral with the inclination angle of 45 degrees. The two opposite endwalls were fitted with the attached or detached transverse ribs. The parametric conditions tested specified in terms of Re, Ro and Bu in the respectively ranges of 5000
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Lee, Tzung-Han, and 李宗翰. "An experimental study of thermal performance of orthogonally rotating parallelogram channel fitted with 45゜ ribs." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/v64rjs.
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碩士國立高雄海洋科技大學
輪機工程研究所
102
An experimental study was performed to measure the full-field Nusselt number (Nu) distributions over two opposite leading and trailing ribbed walls, the pressure drop coefficients (f) and the overall thermal performance factors (TPF) of a rotating parallelogram channel with radially outward flow. The test conditions in terms of Reynolds (Re), rotation (Ro) and buoyancy (Bu) numbers were respectively in the ranges of 5000
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DING, MIN-YA, and 丁敏雅. "The Study of Integratin Magic Board into parallelogram, triangle and trapezoid on the Fifth Graders’ Problem-Solving Performance." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/uqe7cb.
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碩士國立臺南大學
應用數學系碩士班
106
The purpose of this research was to explore the impact of integrating the use of multipurpose display boards into the teaching of areas of parallelograms, triangles, and trapezoids to influence the performance of problem solving and learning motivation of mathematics in the students of 5th grade at the elementary school, and to understand the differences in solving problems among students with different achievements. Researchers adopt a design that focuses on quality and conduct research. Quantitative analysis is the mainstay, supplemented by qualitative interviews. Randomly selected 56 students in two classes of an elementary school in the east district of Tainan City as the research object. One class was the experimental group, taking 5 lesson in one week with using multipurpose display boards as an assisted teaching instruments. The other class was the control group with traditionally speaking, teaching methods. The content of the teaching is the “The area of parallelogram, triangle, and trapezoid” of the eighth unit of the Ninth Edition of the Nan-Yi Publisher. After the experimental teaching, two classes of students completed learning achievement test and questionnaires of mathematics learning motivation. The researchers used SPSS 21.0 to analyze the data and compare the differences. The results of the research are as follows: (1) There are differences in achievement test of parallelograms, triangles and trapezoids in the 5th grade students of elementary school. Analysis by total sample or analysis by experimental group and control group respectively, the best performing question type is “Calculate The area of graphics". "The area of compound graphics" is the worst type of question. (2) There is no significant difference in the performance of mathematics problem solving for the both teaching ways. (3) There is no significant difference in the attitude of mathematics learning with using multipurpose display boards in teaching.
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Lin, An, and 林安. "Flow Field and Heat Transfer Performance in Stationary Two-Pass Smooth Parallelogram Channels with Fully Developed Inlet Flow." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/09773962968398120586.
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碩士國立清華大學
動力機械工程學系
104
PIV and Infrared Thermometry measurements are respectively conducted to study the effects of entrance geometry and Reynolds number (Re) on the detailed flow fields and local heat transfer distributions in a stationary two-pass smooth parallelogram channel with 180-deg sharp turn. Two entrance geometries, including a fully developed inlet condition (FDI) as well as an asymmetrically and suddenly contracted inlet condition (ASI), are investigated. The smooth parallelogram channel has equal adjacent sides of 45.5 mm in length and two pairs of adjacent angles are 45-deg and 135-deg. Local (Nu0) and regionally averaged ((Nu) ̅_0) Nusselt numbers over entire top and bottom walls along the first and second passages and through the bend region with the associated pressure drop are examined at Re ranging from 5,000 to 20,000. Moreover, cross-sectional secondary- flow patterns as well as the near-wall streamwise mean velocity components and turbulent kinetic energy are analyzed to correlate the relationship between flow characteristics and heat transfer distributions at Re=10,000. The most distinct finding of present study is the asymmetric thermal and fluid flow features on the top and bottom wall side, in contrast to symmetric ones in the corresponding square and rectangular channels. The Nu0 distributions over top and bottom walls of ASI channel respectively extends downstream to the mid-turn and the middle of second pass. Compared with FDI channel, the (Nu) ̅_0 for ASI are elevated to the levels about 65.3-70.1%, 14.2-13.7%, and 23.9-14.0% in the first passage, turn region, and second passage, respectively, under constant flow rate condition. Thermal performance factors of the ASI channel are about 43.5% and 53.7% higher than the FDI channel at Re=5,000 and 20,000, respectively. Moreover, the correlations of Nu0 and fanning friction factor (f0) with Re as the controlling parameter are obtained and validated by those of the comparable square channels available from the literature.
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Wang, Hsun, and 王珣. "Nusselt Numbers as Composite Functions of the Aspect Ratio and Included Angle in Single and Two-Pass Parallelogram Channels." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/u625rd.
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Feng, Wen-Tsui, and 馮文翠. "The Development of Online Constructed-Response Items and Automatic Analysis Mechanism Using Special Parallelogram and Trapezoid as an Example." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/18578327092378829340.
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碩士亞洲大學
資訊工程學系碩士在職專班
102
The computerized diagnosing test with mostly multiple-choice items can only keep a record of right or wrong, not the detailed problem solving process. Therefore, this study intends to use computers to record the detailed problem solving process with math computerized constructed-response items. Also, this study uses MATLAB programs and special parallelogram and trapezoid in junior high school math curriculum to diagnose and classify students’ cognition of problem solving process in order to build the automatic analysis system. At the same time, DINA and G-DINA models are used to diagnose and analyze the result and efficiency of the learning process. Three conclusions are drawn from the results of this study： 1. From the test with computerized constructed-response items about special parallelogram and trapezoid in junior high school second grade, the result of tested Cronbach’ α is .821 which shows high validity of the test. 2. This study uses MATLB to set up computerized constructed-response items which are 0.999 in average recognition rate. The rate shows high performance. 3. This study uses DINA and G-DINA to evaluate the cognition of problem solving process and the average recognition rate of Model 2, Model 3 and Model 4 are much higher than Model 1. The result shows that the quantity and varied types of data indeed affect the accuracy of cognitive diagnosis models.
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莊維釗. "Numerical Simulation of Fluid Flow and Heat Transfer in Two-Pass Smooth-Wall Parallelogram Channels with 45-deg Inclined Angle." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/88029551655842949495.
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LIU, YUSHUAI, and 劉輿帥. "Experimental Studies of Fluid Flow In Two-Pass Parallelogram Channels with Smooth Wall and Attached/Detached 90-Degree Rib Arrays." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/11830420440966470399.
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碩士國立清華大學
動力機械工程學系
102
Measurements are presented of the streamwise and spanwise mean velocity and turbulence intensity components as well as Reynolds stresses and turbulence kinetic energy by using Particle Image velocimetry (PIV) for the isothermal flow field in three simulative turbine blade serpentine coolant passages. The transparent plexiglass test section consists of two pass parallelogram duct connected by a 180 sharp turn. The channels have the cross-sectional equal length, 45.5 mm, of adjacent sides and two pairs of opposite angles are 45-deg and 135-deg. Three kinds of in-line rib array arrangements, i.e. smooth-wall, 90-deg attached ribs and 90-deg detached ribs, are studied. Among them, the latter two cases are new studies in the open literature. The rib height to channel height ratio and the pitch to rib height ratio are respectively 0.1 and 10. Two rib-detached distance to rib height ratios, C/H=0 and C/H=0.38, are selected to study C/H effect on the flow structure. All the measurements were performed at a fixed Reynolds number, characterized by channel hydraulic diameter of 32.17 mm and cross-sectional bulk mean velocity of 10000. The smooth-wall channel is first chosen as the base line case to study the typical flow characteristics of a two pass parallelogram channel. It is found that the three dimensional flows are characterized by the inlet configuration induced streamwise double peak mean velocity profile and high turbulence kinetic energy (TKE) in the first pass, secondary-flow vortices generated by sidewall slant effect in the first and second pass, turn induced high TKE, curvature generated Dean vortices inside the turn, and turning geometry induced separation bubble immediately downstream of the turn. Results of the 90-deg attached rib case show shorter reattachment lengths compared to the corresponding square ducts. The aforementioned separation bubble is lacking in the symmetrical plane but only found at the tip of the divider wall near the top wall. These results together with the prevalence of highly anisotropic turbulence in the turn region provide useful reference for selecting turbulence model of CFD simulation. Moreover, the distribution of near-wall mean velocity components, turbulence intensity components, and TKE are found to be able to illustrate the reported heat transfer distribution. Similar to the attached rib case, the rib-wake lengths of detached rib case are found to be shorter than those of square ducts. In contrast to the attached rib case, the separation bubble on the Y*=0 plane in turn region of the detached rib case appears again but does not extend to the second pass. Finally, a comparison between the near-wall mean velocity components and TKE in the present parallelogram and previous square channel with 180-deg sharp turn and inline detach rib array has been attempted and the differences are addressed.
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Chang, Yung-Hsin, and 張永鑫. "Developing an online test system with multiple-choice and constructed-response items in Mathematics－taking the area of parallelogram and triangle in fifth graders as an example." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/38334759886638829826.
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碩士國立臺中教育大學
教育測驗統計研究所
98
The constructed-response items can examine the students’ abilities of thinking, problem solving, orgnization and expression. And the computer-based diagnostic tests can save the examining time and score quickly. This search expects to combine the advantage of two to develop constructed-response items and score models, and then estimate its result with the base of the constructed-response items diagnostic system. First, analyze the students problem-solving error types in the selected units and literatures to draft the constructed-response items error types and score models. And then, according to the structure of expert’s knowledge to design the questions. After examining, the PHP program will distinct the error type of the problem solving in the database automatically. The research shows the average for each constructed-response item has 17 error types for students’ problem solving. From the record, we can not only understand students’ thinking and strategies, but also find some error types which can not be found from the written examination. It can help the teachers judge the students misconcept more precisely and do remedial teaching much more efficiently. Furthermore, the reliability of added constructed-response items is better than the multiple-choice types (.801>.776). Therefore, in the case of the same test length, if the questions can be added a part of constructed-response items, the reliability will be higher.
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Sovič, Pavel. "Podnětná výuka obsahu trojúhelníku a rovnoběžníku ve dvou třídách s odlišnou zkušeností s výukou matematiky." Master's thesis, 2016. http://www.nusl.cz/ntk/nusl-354099.
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The thesis deals with constructivist approaches to teaching mathematics in lower secondary school, which means that a pupil is the centre of learning process. Based on study of literature, textbook analysis, and, in particular, in accordance with the theory of generic models as a theory describing way to build pupils' knowledge, a teaching experiment was prepared, focusing on the area of triangle and parallelogram. Experimental lessons were realized in two 7 grade classes with different experience with being taught mathematics at the elementary school. One class was taught by a highly instructive series of textbooks, while the second by textbooks which respected the principles of constructivism aimed at pupils and allowed individualization of learning process. The main objective of the thesis is to describe the experimental education in both classes and evaluate it from two perspectives. First of all, qualitatively, by analysing video recordings of lessons, pupils' solutions, notes from lessons, print screens from interactive whiteboard, but also by examining attendance sheets from teachers observing some lessons. In the second case, quantitatively, based on pre- and post- tests. The qualitative analysis is mainly focused on key discoveries and didactical situations in teaching and on an assessment...
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Chiang, Shu-Ching, and 姜淑菁. "A study of fourth graders’ concepts of area of parallelograms through interacting with dynamic geometry software." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/35hr38.
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碩士國立清華大學
數理教育研究所
105
The purpose of the study is to explore the study of fourth graders’ concepts of area of parallelograms through interacting with dynamic geometry software. Based on the purpose above , there are two problems treated in the research. Firstly, what are the learning effects of the students of the three levels in the teaching activities of the dynamic geometry software? Secondly, what are the learning effects of each student in the teaching activities of the dynamic geometry software? This study adopts convenience sampling; it’s target studying students are the three students who are ranked with high level, the three students who are ranked with medium level, and the three students who are ranked with low level. This study adopts case study and interview method to collect data with both qualitative data analysis and quantitative data analysis. This study’s research tools are mainly semi-structured interview and exercises and worksheets designed by using the dynamic geometry software GeoGebra. According to the research, the researcher obtains the conclusions of this study as following: 1. Students can induce the variances of parallelograms. 2. Students can find the regular relations among bases, heights, and areas. 3. Students can understand that bases and heights are under multiple relations. 4. Students can understand that heights and areas are under multiple relations. 5. Students can tell the causes why areas of parallelograms are equivalent with same bases and equal heights. 6. Students can understand the formula of area of rectangles. 7. Students can be aware of the relative relations between lengths and widths of rectangles and bases and heights of parallelograms. 8. Students can generate thoughts of cutting and patching of mental imagery under GGB which can transform the formula of area of rectangles to that of area of parallelograms.
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Yang, Tzu-Hsien, and 楊子賢. "A Study of the Teaching Models of GSP and Their Effects on Junior High School Students' Learning of Parallelograms." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/15926196306961542980.
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碩士中原大學
教育研究所
99
This study aims to explore effect of different teaching models of GSP on junior high school students’ learning of parallelograms. Four research purposes are listed as follows: (1) To develop a digital GSP teaching material focused on parallelograms in order to facilitate teachers’ teaching and students’ learning of geometry; (2)To explore the influence of GSP teaching model on students’ mathematical achievement; (3)To find out if there is an interaction effect between teaching models and mathematical abilities of students on mathematical achievement; (4) To find out if there is an interaction effect between teaching models and gender on mathematical achievement. This study adopted nonequivalent groups pretest - posttest quasi – experimental design. Three eight-grade classes from the same junior high school in Taoyuan county were selected as participantts. The researcher randomly assigned students to experimental group1 (executing GSP dynamic teacher demonstration teaching model), experimental group2（executing GSP dynamic student operation teaching model）, and control group（executing traditional lecture teaching model）respectively. All students accepted pattern reasoning examination as a covariance variable before the experiment. The parallelograms achievement examination is executed after teaching. ANCOVA and MANCOVA were adopted to test the hypotheses. The results of this study are listed as follows: (1)The students receiving the GSP teaching model performed significantly higher in parallelograms achievement examination than those in control groups. It indicates that the GSP teaching model helps students’ learning of parallelograms. (2)There is no significant interaction betweenteaching models and mathematical abilities of students on mathematical achievement examination. The main effect analysis shows that the students in experimental groups 1 performed get significantly higher in parallelograms achievement examination than those in control groups. Additionally, students’ scores in parallelograms achievement examination do not differ significantly between experimental group 1 and experimental group 2. It implies that GSP dynamic teacher demonstration teaching model is more suitable for junior high school students. (3)There is no interaction effect betweenteaching models and gender on parallelograms achievement examination. Based on the main effect analysis, male and female students’ scores on parallelograms achievement examination are not significantly different. It means male and female students perform as well in different teaching models.
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王姵婷. "Adding Identification Features and a Pedagogical Agent to a Simulation Game: Examining their Effects on the Learning of the Area of Parallelograms." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/28665775732729363921.
Full textAbstract:
碩士佛光大學
學習與數位科技學系
101
This study aimed at investigating the influence of adding identification features and a pedagogical agent to a simulation game on students' learning of the area of parallelograms. Eighty-one fifth graders from a public school in Yilan county participated in the experiment that used two-by-two factorial designs. The participants were put in blocks of four based on their math ability and randomly assigned to one of the four treatment groups. The dependent variables of the experiment were identification features (i.e., yes or no) and pedagogical agent (i.e., yes or no) while the independent variables were posttest, game performance, and cognitive load and motivation. The results of the study were as follows: 1. Including identification features or not in the game would not affect students’ posttest performance. Including a pedagogical agent in the game, however, would increase students’ posttest scores. 2. Embedding identification features and a pedagogical agent or not in the game would not affect students’ game scores. Embedding identification features and a pedagogical agent in the game would increase game playing time. 3. Including identification features in the game would enhance students' willingness to participate in the gaming activity. Having identification features or not in the game, however, would not affect students': (a) perceived game difficulty, (b) perceived effort needed to solve game problems, (c) level of confidence in the game, and (d) perceived effort put into the game. Moreover, including a pedagogical agent in the game would amplify the amount of effort students devoted to the gaming activity. Having a pedagogical agent or not in the game, however, would not affect the other four dimensions of students' cognitive load and motivation. Recommendations regarding ways to improve the design of the study and to embed identification features and pedagogical agents in simulation games were given. Future research directions were also proposed.
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Nohál, Pavel. "Sbírka úloh o čtyřúhelnících." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-324084.
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Title: The Collection of Exercises About Qaudrangles Author: Bc. Pavel Nohál Department: Department of Mathematics Education Supervisor: doc. RNDr. Jarmila Robová, CSc., Department of Mathematics Education Abstract: The master thesis is focused on exercises regarding qaudrangles. This gives a chance to pupils of primary schools and lower secondary schools to repeat and practice math curriculum with a view of further study, but also develop pupils' common sense and logical thinking. The quadrangles are being encountered by us every day and therefore the exercises in this area are largely connected with the practical life. As not many current Collections on the market are dealing exclusively with quadrangles, author would like to fill this vacancy by this thesis. Keywords: Quadrilaterals and their division Parallelograms and trapezoids Circumference and area Tops, sides and interior angles