Inhaltsverzeichnis
Auswahl der wissenschaftlichen Literatur zum Thema „Demonstrativní panel“
Geben Sie eine Quelle nach APA, MLA, Chicago, Harvard und anderen Zitierweisen an
Machen Sie sich mit den Listen der aktuellen Artikel, Bücher, Dissertationen, Berichten und anderer wissenschaftlichen Quellen zum Thema "Demonstrativní panel" bekannt.
Neben jedem Werk im Literaturverzeichnis ist die Option "Zur Bibliographie hinzufügen" verfügbar. Nutzen Sie sie, wird Ihre bibliographische Angabe des gewählten Werkes nach der nötigen Zitierweise (APA, MLA, Harvard, Chicago, Vancouver usw.) automatisch gestaltet.
Sie können auch den vollen Text der wissenschaftlichen Publikation im PDF-Format herunterladen und eine Online-Annotation der Arbeit lesen, wenn die relevanten Parameter in den Metadaten verfügbar sind.
Zeitschriftenartikel zum Thema "Demonstrativní panel"
1
Cheshire, David, Robert Edmondson und Paul Savidge. „Façade Optimisation Using a Point Equilibrium Methodology“. Key Engineering Materials 572 (September 2013): 601–4. http://dx.doi.org/10.4028/www.scientific.net/kem.572.601.
Der volle Inhalt der QuelleAnnotation:
Modern, organic shaped, building façades are often created by joining together hundreds of flat panels, resulting in high production complexity. To reduce cost it is important to design the façade using the fewest possible unique panels. Each unique panel increases design and production times so using many repeated panels enables batch production, lowering cost. To optimise the panel layout with the fewest unique panels a ‘point equilibrium’ algorithm has been developed to position the corners of the panels (nodes) on a parametric surface. In the developed theory a set of hypothetical, electrically charged particles is randomly placed upon the façade surface and allowed to repel each other. They eventually settle into an equilibrium position, with similar distances between adjacent nodes and hence produce a large number of similar triangles. An example of a façade demonstrating the practicability of this technique for constructing panel layouts is given.
2
Frank C. Fan, Frank C. Fan, Sam Choi Sam Choi und and C. C. Jiang and C. C. Jiang. „Demonstration of full-parallax three-dimensional holographic display on commercial 4 K flat-panel displayer“. Chinese Optics Letters 14, Nr. 1 (2016): 010007–10011. http://dx.doi.org/10.3788/col201614.010007.
Der volle Inhalt der Quelle
3
Park, Byoung-Jik, Yong-Ho Yoo, Yangkyun Kim, Jin-Ouk Park und Hwi-Seong Kim. „Development of Flame Spread Prevention Systems for Combustible Composite Panels Using Water Screen Technology“. Fire Science and Engineering 34, Nr. 6 (31.12.2020): 31–36. http://dx.doi.org/10.7731/kifse.49e0be70.
Der volle Inhalt der QuelleAnnotation:
Composite panels are designed to be fabricated by adding Styrofoam, glass wool, and urethane into steel plates before integration with adhesive materials. As these panels exhibit good workability, cost efficiency, and heat insulation performance, they are widely used as building materials for plant or storage facilities. However, fire safety still needs to be addressed, because these panels can potentially cause large fires. As firewater cannot easily penetrate the material inside the panel, extinguishing any fires caused is difficult. Furthermore, the imperfect combustion of the core material tends to generate a large volume of toxic gas, resulting in serious damage to human life. In addition, the high risk of collapse makes fire-fighting activities more difficult. Flame spread prevention systems optimized for composite panels have been developed for more effective fire suppression based on accumulative research outcomes obtained thus far. Related test methods were reviewed before successfully demonstrating the performance of the developed systems. The existing composite panel structure—wherein the developed system was not applied-burned out after 5 min; however, when the developed system was applied to the composite panels, the structure was covered in soot after 15 min. The structure was designed by applying the developed system to a virtual factory building, and the construction standard was reviewed.
4
Bhattarai, Shankar, Ji-Seong Go, Hongrae Kim und Hyun-Ung Oh. „Development of a Novel Deployable Solar Panel and Mechanism for 6U CubeSat of STEP Cube Lab-II“. Aerospace 8, Nr. 3 (05.03.2021): 64. http://dx.doi.org/10.3390/aerospace8030064.
Der volle Inhalt der QuelleAnnotation:
The structural safety of solar cells mounted on deployable solar panels in the launch vibration environment is a significant aspect of a successful CubeSat mission. This paper presents a novel highly damped deployable solar panel module that is effective in ensuring structural protection of solar cells under the launch environment by rapidly suppressing the vibrations transmitting through the solar panel by constrained layer damping achieved using printed circuit board (PCB)-based multilayered thin stiffeners with double-sided viscoelastic tapes. A high-damping solar panel demonstration model with a three-pogo pin-based burn wire release mechanism was fabricated and tested for application in the 6U CubeSat “STEP Cube Lab-II” developed by Chosun University, South Korea. The reliable release function and radiation hardness assurance of the mechanism in an in-orbit environment were confirmed by performing solar panel deployment tests and radiation tests, respectively. The design effectiveness and structural safety of the proposed solar panel module were validated by launch vibration and in-orbit environment tests at the qualification level.
5
Wei, Heming, Angeline Lai, Ee Shien Tan, Mark Jean Aan Koh, Ivy Ng, Teck Wah Ting, Terrence Thomas et al. „Genetic landscape of congenital disorders in patients from Southeast Asia: results from sequencing using a gene panel for Mendelian phenotypes“. Archives of Disease in Childhood 106, Nr. 1 (25.09.2020): 38–43. http://dx.doi.org/10.1136/archdischild-2020-319177.
Der volle Inhalt der QuelleAnnotation:
ObjectiveTo test the utility and diagnostic yield of a medical-exome gene panel for identifying pathogenic variants in Mendelian disorders.MethodsNext-generation sequencing was performed with the TruSight One gene panel (targeting 4813 genes) followed by MiSeq sequencing on 216 patients who presented with suspected genetic disorders as assessed by their attending physicians.ResultsThere were 56 pathogenic and 36 likely pathogenic variants across 57 genes identified in 87 patients. Causal mutations were more likely to be truncating and from patients with a prior clinical diagnosis. Another 18 promising variants need further evaluation for more evidence to meet the requirement for potential upgrade to pathogenic. Forty-five of the 92 clinically significant variants were novel.ConclusionThe 40.3% positive yield compares favourably with similar studies using either this panel or whole exome sequencing, demonstrating that large gene panels could be a good alternative to whole exome sequencing for quick genetic confirmation of Mendelian disorders.
6
Abbasloo, Aslan, und Mohamad Reza Maheri. „On the mechanisms of modal damping in FRP/honeycomb sandwich panels“. Science and Engineering of Composite Materials 25, Nr. 4 (26.07.2018): 649–60. http://dx.doi.org/10.1515/secm-2015-0444.
Der volle Inhalt der QuelleAnnotation:
Abstract Sandwich panels made of fibre-reinforced plastic (FRP) skins and a honeycomb core can be effectively damped through the choice of the skin and especially of the core materials. Because the core is often highly damped, a lateral deflection that causes more shearing of the core than bending of the skin increases sandwich damping. Aside from the skin and the core material properties, the shearing/bending ratio depends on a number of other, often interacting, factors, including the sandwich planar as well as transverse dimensions, the particular modal pattern in which the panel vibrates and its relationship to the type of skin layup, as well as the panel end conditions. In the present work, using a simple, first-order shear deformation theory, damping results have been produced for simple modes of vibration of a sandwich panel comprising composite skins and a damped honeycomb core, demonstrating the mechanisms by which the above factors affect the FRP skin/honeycomb core sandwich damping.
7
Piquette, Jean C. „Analytical backplate removal in panel tests: An experimental demonstration“. Journal of the Acoustical Society of America 97, Nr. 3 (März 1995): 1978–79. http://dx.doi.org/10.1121/1.413049.
Der volle Inhalt der Quelle
8
Sugawara, Yoshiki, Hironori Sahara, Shinichi Nakasuka, Stephen Greenland, Takeshi Morimoto, Kanichi Koyama, Chisato Kobayashi, Hideaki Kikuchi, Takanori Okada und Hidenori Tanaka. „A satellite for demonstration of Panel Extension Satellite (PETSAT)“. Acta Astronautica 63, Nr. 1-4 (Juli 2008): 228–37. http://dx.doi.org/10.1016/j.actaastro.2007.12.016.
Der volle Inhalt der Quelle
9
LIEW, K. M., X. ZHAO und T. Y. NG. „THE ELEMENT-FREE kp-RITZ METHOD FOR VIBRATION OF LAMINATED ROTATING CYLINDRICAL PANELS“. International Journal of Structural Stability and Dynamics 02, Nr. 04 (Dezember 2002): 523–58. http://dx.doi.org/10.1142/s0219455402000701.
Der volle Inhalt der QuelleAnnotation:
In this paper, the element-free kernel particle Ritz method or in short the kp-Ritz method, is developed and implemented for the free vibration analysis of rotating cylindrical panels. Over the years, researchers have employed various trial or admissible functions, such as harmonic and hyperbolic functions as well as polynomials, in the Ritz approximate approach for structural vibration analyses. The present work represents a significant development whereby 2-D reproducing kernel functions are employed to approximate the displacement field. The resulting kp-Ritz method represents the methodology development aspect of this paper. Further the rotating panel problem selected for demonstrating the accuracy and efficiency of this new methodology is also an important contribution of this paper. Although there is a moderate amount of published information on the vibration of rotating cylindrical shells, corresponding studies on rotating panels are conspicuously lacking. This is the first instance in which results have been obtained for rotating cylindrical panels whereby the essential boundary conditions have been fully enforced.
10
dos Santos Martins Padoan, Flavia Carla, Pier Giorgio Schiavi, Gianmaria Belardi, Pietro Altimari, Antonio Rubino und Francesca Pagnanelli. „Material Flux through an Innovative Recycling Process Treating Different Types of End-of-Life Photovoltaic Panels: Demonstration at Pilot Scale“. Energies 14, Nr. 17 (04.09.2021): 5534. http://dx.doi.org/10.3390/en14175534.
Der volle Inhalt der QuelleAnnotation:
A quantitative assessment of the material flux emerging from a pilot plant for the treatment of end-of-life photovoltaic panel waste was reported. The process included the manual dismantling of aluminum frames, mechanical treatment for size reduction, and the physical treatment of the milled materials for the release of coarse glass from the encapsulant polymer. Demonstration activities were performed using 1 ton of Si-, 1 ton of CdTe-, and 1 ton of CIGS-based photovoltaic panels (investigated separately), confirming the ability of the process to treat different photovoltaic technologies. The characterization of the input materials was performed and compared with previous literature data. The major bottleneck in the definition of an effective process option for the treatment of different panel technologies was emphasized by the high heterogeneity reported. Mass balances for the proposed process were derived by the recovered material flow. It was highlighted that in processes based on mechanical treatments, producing predominantly coarse fractions allows for the facile separation of most of the valuable components. In this perspective, the present work offers further insights into the design of recycling process to reach increased profitability/sustainability, especially considering the distributions of valuable metals in the process products.
Dissertationen zum Thema "Demonstrativní panel"
1
Mitrenga, Michal. „Realizace demonstrativního panelu inteligentní elektroinstalace KNX“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442454.
Der volle Inhalt der QuelleAnnotation:
The aim of this diploma thesis is to compile a demonstration panel as an example of the functions of intelligent electrical installation KNX. One of the advantages of this system bus is the ability to use devices from multiple manufacturers. A total of 20 devices from 12 different manufacturers are used in this work. The work begins with an explanation of the principle on which the KNX system bus works, followed by a description of the equipment used and the electrical connection of the switchboard according to the wiring diagram. Next, how the whole panel was revived is described. The next chapter contains a detailed description of device programming in ETS, ie setting parameters for individual devices and assigning group addresses. The last chapter deals with visualization and remote control. It explains how a communication channel was created to connect the panel to a server from FlowBox. Using the web interface on this server, a visualization was created, which can be used to remotely control the entire panel from anywhere.
2
Khanna, Amit. „Development and Demonstration of a Performance Test Protocol For Radiant Floor Heating Systems“. Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/30987.
Der volle Inhalt der QuelleAnnotation:
The Radiant Heating markets - especially, the hydronic segment - are growing rapidly in North America due to homeownersâ increasing demand for comfort and the steady rise in residential construction. Radiant systems are promising technologies for energy saving in commercial and residential building sectors together with improving occupant thermal comfort. Such a technology is different from the more standard all-air systems and thus can be termed Space Conditioning. However, the thermal performance of radiant systems in buildings has not been fully understood and accounted for. This is primarily due to lack of any standard testing mechanism. The central thrust of this paper is to experimentally investigate questions relating to thermal performance of radiant systems, thus also contribute towards evolving a new standard for testing mechanisms. Products from 12 different radiant floor systems were chosen from the market. Having defined each with similar control parameters such as flow rate, supply water temperature and similar design parameters like size, insulation etc., they are separately tested in a well insulated test setup. Experiments on the time variations for each test floor were performed at supply water temperatures ranging between 100F â 140F with a 10F increment at each stage. Having gathered data through the Data Acquisition System (DAS), the data is analyzed and compared between all systems. The paper concludes by providing recommendations for experimentally testing thermal energy performance, thermal uniformity and thermal stability of radiant floor heating technology.Master of Science
3
Jesus, Douglas Lisboa Santos de. „O papel demonstrativo dos diagramas na geometria euclidiana“. Faculdade de Filosofia e Ciências Humanas, 2017. http://repositorio.ufba.br/ri/handle/ri/24921.
Der volle Inhalt der QuelleAnnotation:
Submitted by Douglas De Jesus (douglas.lisboasj@gmail.com) on 2017-12-28T19:54:55Z
No. of bitstreams: 1
De Jesus (2017) - O papel demonstrativo dos diagramas na geometria euclidiana (Dissertação).pdf: 1380214 bytes, checksum: c54e315d51423c3db9da71096989f547 (MD5)Approved for entry into archive by Biblioteca Isaías Alves (reposiufbat@hotmail.com) on 2018-01-08T13:01:12Z (GMT) No. of bitstreams: 1 De Jesus (2017) - O papel demonstrativo dos diagramas na geometria euclidiana (Dissertação).pdf: 1380214 bytes, checksum: c54e315d51423c3db9da71096989f547 (MD5)
Made available in DSpace on 2018-01-08T13:01:12Z (GMT). No. of bitstreams: 1 De Jesus (2017) - O papel demonstrativo dos diagramas na geometria euclidiana (Dissertação).pdf: 1380214 bytes, checksum: c54e315d51423c3db9da71096989f547 (MD5)
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
A recente literatura em historiografia e filosofia da prática matemática apresenta um novo cenário sobre o estatuto epistemológico dos diagramas. Resgatam-se aí algumas das principais discussões sobre a maneira como um sujeito pode obter conhecimento através de justificativas diagramáticas. Dentro deste quadro intelectual, apresenta-se nesta investigação uma defesa dum modelo de prova matemática parcialmente baseado em diagramas. Como caso de estudo paradigmático, adota-se aqui os Elementos de Euclides sob a perspectiva metodológica da análise retórica. O principal argumento apresentado pretende demonstrar a seguinte tese: uma correta análise das provas euclidianas deve reconsiderar a prática matemática prescrita pelos Elementos num modelo de justificativa que incorpore não apenas a análise lógica de estruturas dedutivas, como também sua dimensão normativa, dependente, portanto, da audiência. Uma objeção frequente às provas euclidianas decorre da correta observação que o diagrama é uma instância física imperfeita, donde se seguiria que também uma prova diagramática é, de um ponto de vista lógico, imperfeita. É comum entre comentadores e filósofos a alegação de que as provas euclidianas possuem “lacunas” inferenciais, cuja correção deveria ser feita mediante novos axiomas dentro duma concepção formal de prova. Assim, cada passo em uma prova seria autorizado se, e somente se, é uma fórmula bem formada que, ou é um axioma, ou segue-se da aplicação duma regra de inferência. Em réplica, fica demonstrado que a principal deficiência deste argumento reside numa significativa negligência da prática matemática euclidiana. Mais ainda: não oferece uma explicação satisfatória para a estabilidade da teoria engendrada pelos Elementos. Isso é verificado a partir dum estudo mais detalhado acerca do Postulado 2. Através duma aclaração sobre o seu suposto uso não uniforme nos Livros I-VI pode-se constatar que a geometria euclidiana, no tocante às suas provas, é estável e racionalmente controlada. Para além da geometria de Euclides, mostra-se como a análise retórica poderia ser pensada como um método investigativo na filosofia da ciência.
The recent literature on historiography and philosophy of mathematical practice presents a new scenario about the epistemological status of diagrams. Some of the main discussions about the way a subject can obtain knowledge through diagrammatic justifications are rescued. Within this intellectual framework, it is presented here a defense of a mathematical proof model partially based on diagrams. As a paradigmatic case study, Euclid’s Elements are adopted here from the methodological perspective of the rhetorical analysis. The main argument through this text tries to prove the follow thesis: a correct analysis of the Euclidean proofs should reconsider the mathematical practice prescribed by the Elements in a justification model that incorporates not only the logical analysis of deductive structures, but also their normative dimension, therefore, dependent on the audience. A frequent objection to the Euclidean proofs stems from the correct observation that the diagram is an imperfect physical instance, from which it would follow that a diagrammatic proof, from a logical point of view, is also imperfect. It is common among commentators and philosophers the claim that the Euclidean proofs have inferential “gaps”, which should be corrected by new axioms within a formal conception of proof. Thus, each step in a proof would be allowed if, and only if, it is a well-formed formula which is either an axiom or follows from the application of an inference rule. In reply, it is demonstrated that the main deficiency of this argument lies in a significant neglect of Euclidean mathematical practice. Moreover, it does not offer a satisfactory explanation for the stability of the theory engendered by Elements. This is verified from a more detailed study of Postulate 2. Through a clarification on its supposed non-uniform use in Books I-VI it can be seen that Euclidean geometry, in relation to its proofs, is stable and rationally controlled. Beyond the geometry of Euclid, it is shown how rhetorical analysis could be thought of as an investigative method in the philosophy of science.
4
Chen, Qiao. „Modeling, design and demonstration of through-package-vias in panel-based polycrystalline silicon interposers for high performance, high reliability and low cost“. Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53568.
Der volle Inhalt der QuelleAnnotation:
Silicon interposers with TSVs (through-silicon-vias) have been developed in single-crystalline silicon wafer to achieve the high I/O (Input/Output) density. However, single-crystalline silicon interposers suffer a few problems such as cost, electrical performance and reliability. To overcome these shortcomings, an entirely different approach using polycrystalline silicon interposers with thick polymer liners are proposed by Georgia Tech Packaging Research Center, aiming to achieve lower cost silicon interposers with high performance and reliability.
The objective of this research is to explore and demonstrate thin polycrystalline silicon as a suitable interposer material to achieve high performance and high reliability TPVs (through-package-vias) in polycrystalline silicon materials with lower cost. Three fundamental challenges were defined, including: 1) low resistivity of the polycrystalline silicon, resulting in high electrical loss; 2) reliability problems resulting from CTE (coefficient of thermal expansion) mismatch between silicon and Cu, and 3) handling and processing of thin silicon panels.
A three-dimensional EM (electromagnetic) model was developed to simulate insertion loss and crosstalk of TPVs and compared with TSVs. It has been shown thick polymer liner is effective in addressing the fundamental challenge of low resistivity for the polycrystalline silicon material, leading to better electrical performance of TPVs than TSVs. Parametric studies indicate that thicker sidewall liners result in better electrical performance. A two-dimensional axisymmetric model was established to simulate the first principal stresses in silicon and shear stresses in TPV under thermal cycling. TPVs with thick polymer liners present both smaller principal stresses and shear stresses than TSVs due to the low modulus of polymer. Parametric studies suggest that sidewall liners act as stress buffers and thicker liners result in better mechanical performance. Design guidelines based on simulation results were used in TPV demonstration and test vehicle fabrication. Fracture strength of polycrystalline silicon panel has been fundamentally studied with four-point bending tool and Weibull plot. Surface polymer liners on both sides were introduced to improve the handling of thin silicon panels. Quantitative study showed higher characteristic fracture strength for the panel with surface liners than raw silicon panel. Low cost and double-side processes have been developed for TPV fabrication including UV (ultraviolet) lasers for TPV formation, double laser method for liner fabrication and electroless Cu for seed formation. Key steps and mechanisms for aforementioned processes were summarized and discussed. Polycrystalline silicon interposers with TPVs and up to four metal RDLs (re-distribution layers) were designed, fabricated and characterized. Measurement results showed low insertion loss for both TPVs and CPW (co-planar waveguide) transmission lines. Good model to hardware correlation was also observed. Reliability test vehicles of polycrystalline silicon interposers were also designed and fabricated for thermal cycling test. TPVs survived 4000 cycles without significant resistance changes. SEM imaging on the cross-section of the samples confirmed no Cu or silicon cracking. Magnified images around corner also suggested good adhesion at Cu/liner and silicon/liner interfaces.
5
Lima, Marcella Luanna da Silva. „Sobre pensamento geomátrico, provas e demonstrações matemáticas de alunos do 2º ano do Ensino Médio nos ambientes Lápis e Papel e Geogebra“. Universidade Estadual da Paraíba, 2015. http://tede.bc.uepb.edu.br/tede/jspui/handle/tede/2336.
Der volle Inhalt der QuelleAnnotation:
Submitted by Jean Medeiros (jeanletras@uepb.edu.br) on 2016-05-12T14:04:15Z
No. of bitstreams: 1
PDF - Marcella Luanna da Silva Lima.pdf: 5051111 bytes, checksum: 2d6c0143b6e358e6f301609c3154d1f0 (MD5)Approved for entry into archive by Secta BC (secta.csu.bc@uepb.edu.br) on 2016-07-21T20:47:00Z (GMT) No. of bitstreams: 1 PDF - Marcella Luanna da Silva Lima.pdf: 5051111 bytes, checksum: 2d6c0143b6e358e6f301609c3154d1f0 (MD5)
Approved for entry into archive by Secta BC (secta.csu.bc@uepb.edu.br) on 2016-07-21T20:47:11Z (GMT) No. of bitstreams: 1 PDF - Marcella Luanna da Silva Lima.pdf: 5051111 bytes, checksum: 2d6c0143b6e358e6f301609c3154d1f0 (MD5)
Made available in DSpace on 2016-07-21T20:47:11Z (GMT). No. of bitstreams: 1 PDF - Marcella Luanna da Silva Lima.pdf: 5051111 bytes, checksum: 2d6c0143b6e358e6f301609c3154d1f0 (MD5) Previous issue date: 2015-12-21
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES
Our research work aimed to investigate what type of proof, mathematical demonstration and level of geometrical thinking can occur from a didactic proposal within pencil, paper and GeoGebra environments. As qualitative research and study case, we used as instruments essays with Mathematical Proof and Demonstration themes, a didactic proposal developed by a team of five people who inserted worked collaboratively in the CAPES/OBEDUC/UFMS/UEPB/UFAL Project, field notes, participant observation, audios and photos. We elaborated a didactic proposal with eighteen activities, divided into four parts, which encouraged the students to reflect, justify, prove and demonstrate. The proposal application was carried out in July 2015 with High School 2nd year students of a public school in the town of Areia, Paraíba. For such, the students organized themselves in couples and one trio and the data collection happened in three moments. In the first moment we applied the essay, revised angles, triangles and theorems with the students and worked GeoGebra application with them. In the second moment we applied Parts I and II of the proposal with eight activities on Pythagoras Theorem and three activities on Sum of the Internal Angles of a Triangle Theorem, respectively. In the third moment we applied Part III, with two questions on External Angle Theorem and Part IV, with five question to be worked with the GeoGebra application on Pythagoras Theorem and Sum of the Internal Angles of a Triangle Theorem. In our research work we analyzed the work developed by the trio of students, once they were great in responding all the questions/activities. We analyzed Activity 8 of Part I, Activity 1 and 2 of Part II and all Activities of Part IV, totalizing in eight questions. We used the triangulation method for our study case and, firstly, we traced the profiles of the trio in relation to Mathematical Proof and Demonstration. Then we investigated the geometric thinking and the mathematical proof and demonstration used by the trio of students in the pencil and paper and GeoGebra environments. For such, we used discussions around the level of geometrical thinking proposed by Parzysz (2006) and the type of proofs proposed by Balacheff (2000) and Nasser and Tinoco (2003). From our research results we could conclude that the trio of students could not develop the justifications or proofs, once they did not understand what are mathematical proof and demonstration are, in their essays they understand mathematical proofs as bimestrial evaluations applied by the mathematics teacher. Moreover, the mathematical proofs performed by these students were in accordance with naive empiricism, pragmatic proof (Balacheff, 2000) and graphic justification (Nassar and Tinoco, 2003). In this way, when we observed the students geometrical thinking (Parzysz, 2006) we noted that it fits into two levels of the non-axiomatic Geometry: the Concrete Geomety (G0) and the Spatio-Graphique Geometry (G1), once these students used drawings to justify their affirmations, as the validation of the affirmation was done by the trio. We believe that if in Mathematic classes the teachers contemplate mathematical proof and demonstration, respecting the level of education, the degree of knowledge and maturity of the students, they could strongly contribute to the process of teaching and learning Mathematics and geometrical thinking, once the students would be led to reflect, justify, prove and demonstrate their ideas.
Nossa pesquisa investigou que tipo de provas, demonstrações matemáticas e nível de pensamento geométrico de alunos do 2º Ano do Ensino Médio podem ocorrer a partir de uma proposta didática nos ambientes lápis e papel e GeoGebra. Como pesquisa qualitativa, e estudo de caso, utilizamos como instrumentos redação com o tema Provas e Demonstrações Matemáticas, proposta didática desenvolvida por uma equipe de cinco pessoas que trabalhou de forma colaborativa inserida no Projeto CAPES/OBEDUC/UFMS/UEPB/UFAL Edital 2012, notas de campo, observação participante, gravações em áudio e fotos. Elaboramos uma proposta didática com 18 atividades, dividida em quatro partes, que incentivam alunos a refletirem, justificarem, provarem e demonstrarem. A aplicação dessa proposta se deu em julho de 2015 aos alunos do 2º Ano do Ensino Médio de uma escola pública na cidade de Areia, Paraíba. Para isso, os alunos se agruparam em duplas e um trio e a coleta dos dados se deu em três momentos. No primeiro momento, aplicamos a redação, revisamos com os alunos ângulos, triângulos e teoremas e trabalhamos com eles o aplicativo GeoGebra. No segundo momento, aplicamos as Partes I e II da proposta com 8 atividades sobre Teorema de Pitágoras e 3 atividades sobre Teorema da Soma dos Ângulos Internos de um Triângulo, respectivamente. No terceiro momento, aplicamos a Parte III, com 2 questões sobre o Teorema do Ângulo Externo e a Parte IV, com 5 questões à serem trabalhadas no aplicativo GeoGebra sobre o Teorema de Pitágoras e Teorema da Soma dos Ângulos Internos de um Triângulo. Em nossa pesquisa analisamos o trabalho desenvolvido pelo trio de alunos, uma vez que foram ricos na tentativa de r esponder a todas as perguntas/atividades. Analisamos a Atividade 8 da Parte I, as Atividades 1 e 2 da Parte II e todas as Atividades da Parte IV, totalizando em 8 questões. Utilizamos o método de triangulação de dados para nosso estudo de caso e, primeiramente, traçamos o perfil do trio de alunos com relação às Provas e Demonstrações Matemáticas. Em seguida, investigamos o pensamento geométrico e as provas e demonstrações matemáticas utilizadas pelo trio de alunos nos ambientes lápis e papel e GeoGebra. Para isso, utilizamos as discussões sobre os níveis do pensamento geométrico propostos por Parzysz (2006) e tipos de provas propostos por Balacheff (2000) e Nasser e Tinoco (2003). A partir de nossos resultados pudemos concluir que o trio de alunos não conseguiu desenvolver suas justificativas nem provas, uma vez que não entendem o que vem a ser provas e demonstrações matemáticas, e em suas redações percebemos que estes alunos tratam provas matemáticas como as avaliações aplicadas bimestralmente pelo professor de Matemática. Além disso, as provas matemáticas realizadas por estes alunos se enquadram no empirismo ingênuo, prova pragmática (Balacheff, 2000) e justificativa gráfica (Nasser e Tinoco, 2003). Dessa forma, quando observamos o pensamento geométrico (Parzysz, 2006) destes alunos, notamos que se enquadra nos dois níveis da Geometria não axiomática: a Geometria Concreta (G0) e a Geometria Spatio-Graphique (G1), uma vez que estes alunos se utilizam de desenhos para justificar suas afirmações, como também a validação das afirmações foi feita pela percepção do trio. Acreditamos que se nas aulas de Matemática os professores contemplassem provas e demonstrações matemáticas, respeitando o nível de escolaridade, o grau de conhecimento e a maturidade dos alunos, contribuiriam fortemente para o processo de ensino e aprendizagem da Matemática e do pensamento geométrico, uma vez que os alunos seriam levados a refletir, justificar, provar e demonstrar suas ideias.
6
Alves, Luís Filipe Carneiro Gomes. „O papel da exemplificação instrumental pelo professor nas aulas de oboé“. Master's thesis, 2017. http://hdl.handle.net/1822/45179.
Der volle Inhalt der QuelleAnnotation:
Relatório de estágio de mestrado em Ensino de MúsicaO presente relatório dimana do Estágio Profissional realizado no Conservatório de Música Calouste Gulbenkian de Braga, no âmbito do Mestrado em Ensino de Música da Universidade do Minho, e explana a conceção, o desenvolvimento e a avaliação do Plano de Intervenção, implementado ao longo do ano letivo 2015/2016. A nível empírico verifica-se que a exemplificação instrumental é amplamente utilizada pelos professores de instrumento e exibe elevado estatuto face a outras estratégias didáticas utilizadas no ensino especializado de música. Todavia, poucos estudos exploram a sua aplicação e o seu papel concreto na aprendizagem de um instrumento musical. Assim, a estruturação deste projeto de intervenção e investigação pretendeu verificar o potencial didático da exemplificação instrumental pelo professor nas aulas de Oboé, tendo em conta variáveis como: graus de ensino, repertório e conteúdos programáticos. Neste sentido, foi realizada uma investigação-ação envolvendo alunos do 1º e 2º ciclos e do Ensino Secundário. Os dados obtidos foram recolhidos através dos registos de observação, narrativas profissionais e de aprendizagem, focus group e inquérito por questionário. A partir dos resultados obtidos conclui-se que a exemplificação instrumental é uma estratégia didática eficiente e transversal a todos os graus de ensino implicados no estudo, ainda que se tenha constatado a necessidade de utilização mais frequente e de mais tipos de exemplificação em graus mais avançados, sobretudo nos “estudos” e “peças”, uma vez que nos graus iniciais há, por tradição, maior preocupação com a leitura e não com o som, o que origina mais explicações verbais. Os elementos-chave desta estratégia parecem estar relacionados com a modelação/imitação e com a motivação. Não obstante, devido à dimensão particular do contexto educativo onde se realizou o estágio e ao número diminuto de intervenientes no estudo, parece importante contextualizar os resultados obtidos e, se possível, aprofundar a investigação realizada através de novos estudos comparativos e longitudinais.
The current report describes the conception, development and evaluation of a Pedagogical Intervention Plan implemented at Calouste Gulbenkian Music Conservatory of Braga throughout the Academic Year of 2015-2016 as part of the Practicum of the Master’s degree in Music Education of the University of Minho. From an empirical point of view, teacher’s demonstrations in instrumental lessons enjoy a privileged status as they have been widely adopted in detriment of other strategies in specialized music education. Despite the evident preference for this method, there are very few studies exploring both its clear role and actual implementation in the process of teaching a musical instrument. The awareness of this lack draw, indeed, the need to structure this research and pedagogical project in a way which might check the true potential of the music instrument demonstration by the teacher in Oboe lessons. For this purpose several variables were studied: level of knowledge, repertoire and syllabi. Having this in mind, an action research project took place, involving students of the 1st and 2nd cycles and of the Secondary level. Data has been collected through observation of Pedagogical Practice, learning narratives, professional narratives, focus group, and a questionnaire. The results obtained show that music demonstration in instrumental lessons is an efficient and transversal didactic strategy for students of all levels involved in the project. Despite its effectiveness on all student levels, it became clear that demonstrations are more frequent in more advanced degrees and mostly used in “studies” and “pieces”. This can be easily understood if we consider that in the early stages of music education, the focus usually lies more on reading rather than on sound, which explains a more theoretical or verbal approach by the teacher. The key-elements of this strategy seem to be linked to modeling/imitation as well as to motivation; despite this - and due to both the peculiar dimension of the educational context where the practicum took place and the not so abundant number of participants in the study – further study and interpretation of the results as well as comparative and longitudinal research are needed.
Bücher zum Thema "Demonstrativní panel"
1
Center, Langley Research, Hrsg. High capacity demonstration of honeycomb panel heat pipes. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1989.
Den vollen Inhalt der Quelle finden
2
Center, Langley Research, Hrsg. High capacity demonstration of honecomb panel heat pipes. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1989.
Den vollen Inhalt der Quelle finden
3
Wauters, W. Manufacture of a Sound and Heat Insulating Panel by Using Regenerated Raw Materials: Demonstration Project. European Communities / Union (EUR-OP/OOPEC/OPOCE), 1989.
Den vollen Inhalt der Quelle finden
4
New York State Energy Research and Development Authority., Geneva (N.Y.). Marsh Creek Wastewater Treatment Plant., Parkson Corporation und O'Brien & Gere., Hrsg. Demonstration of membrane aeration panels: City of Geneva Wastewater Treatment Plant : final report. Albany: The Authority, 1995.
Den vollen Inhalt der Quelle finden
5
Jones, Sam, und Ricardo Santos. Updating great expectations: The effect of peer salary information on own-earnings forecasts. UNU-WIDER, 2020. http://dx.doi.org/10.35188/unu-wider/2020/895-5.
Der volle Inhalt der QuelleAnnotation:
How jobseekers set their earnings expectations is central to job search models. To study this process, we track the evolution of own-earnings forecasts over 18 months for a representative panel of university-leavers in Mozambique and estimate the impact of a wage information intervention. We sent participants differentiated messages about the average earnings of their peers, obtained from prior survey rounds. Demonstrating the stickiness of (initially optimistic) beliefs, we find an elasticity of own-wage expectations to this news of around 7 per cent in the short term and 16 per cent over the long term, which compares to a 22 per cent elasticity in response to unanticipated actual wage offers. We further find evidence of heterogeneous updating heuristics, where factors such as the initial level of optimism, cognitive skills, perceived reliability of the information, and valence of the news shape how wage expectations are updated. We recommend institutionalizing public information about earnings.
6
Gelfand, Michele J., Chi-yue Chiu und Ying-yi Hong, Hrsg. Handbook of Advances in Culture and Psychology, Volume 7. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190879228.001.0001.
Der volle Inhalt der QuelleAnnotation:
Volume 7 of the Advances in Culture and Psychology series showcases cutting-edge contributions from internationally renowned culture scholars who span the discipline of culture and psychology and represent diversity in the theory and study of culture within psychology. In the first chapter, Ronald F. Inglehart presents data from countries containing over 90% of the world’s population, demonstrating that in recent decades, rising levels of economic and physical security have been reshaping human values and motivations and thereby transforming societies. In the next chapter, Zoltán Kövecses illustrates how conceptual metaphor theory (CMT) functions as a link between culture and cognition. In her chapter on cultural-developmental approaches to moral psychology, Lene Arnett Jenssen lays out life course “templates” for the three Ethics of Autonomy, Community, and Divinity. Thomas S. Weisner next illustrates how ecological theory links structural and environmental conditions to the cultural learning environments of children and the everyday routines and activities that shape the behavior and minds of children. Miriam Erez then describes research on cross-cultural similarities and differences in the area of work motivation and multicultural teams. Finally, Pawel Boski advances the concept of the cultural experiment and how it can illuminate how individuals react with resistance or tolerance when faced with cultural change.
Buchteile zum Thema "Demonstrativní panel"
1
Langdon, Jonathan. „An unfractured line: an academic tale of self-reflective social movement learning in the Nova Scotia anti-fracking movement“. In Environmental Justice, Popular Struggle and Community Development, 83–100. Policy Press, 2019. http://dx.doi.org/10.1332/policypress/9781447350835.003.0006.
Der volle Inhalt der QuelleAnnotation:
The chapter shares a series of reflections garnered from being involved in Anti-fracking and subsequent social movement organizing in Nova Scotia/Mi’kma’ki, Canada, from 2010 until now. Providing a framework for these reflections is Foley’s notion of social movement learning in struggle as I went from being part of demonstrations, to helping organize them, to working on submissions to an expert panel, to working with the steering committee of Nova Scotia’s anti-fracking coalition. The story of the Nova Scotia anti-fracking movement describes how we were able to build a successful alliance between communities of the Mi’kmaq First Nation and Nova Scotia settlers that pressured government, even through a change in ruling parties, to legislate a ban on fracking. This unfractured movement speaks to the potential to use the original treaties between the Mi’kmaq and the British as a source of unity in popular struggle.
2
Baker, Andy, Barry Ames und Lúcio Rennó. „Clientelism as the Purchase of Social Influence“. In Persuasive Peers, 187–206. Princeton University Press, 2020. http://dx.doi.org/10.23943/princeton/9780691205779.003.0007.
Der volle Inhalt der QuelleAnnotation:
This chapter assesses elite behavior, demonstrating that clientelistic party machines try to pay off hubs — that is, voters with large political discussion networks who frequently engage in persuasion. In seeking to buy votes, the best strategy a party can pursue is to target citizens who are well-connected opinion leaders in informal networks. These voters represent the machine's highest potential yield because they can magnify the effect of the payoff by diffusing positive information about the machine through their large social networks. The chapter uses the Latin American Public Opinion Project (LAPOP) and the Mexico 2006 Panel Study to show that party machines do target well-connected voters throughout Latin America. It also shows that a finding central to previous theories — namely, that loyal partisans are the most likely targets of clientelism — is driven by omitted-variable and endogeneity bias. In other words, scholarly expectations of party activity change when one recognizes that parties operate in a world of horizontally networked voters.
3
Qian, Yingyi. „Regional Decentralization and Fiscal Incentives: Federalism, Chinese Style“. In How Reform Worked in China. The MIT Press, 2017. http://dx.doi.org/10.7551/mitpress/9780262534246.003.0010.
Der volle Inhalt der QuelleAnnotation:
Aligning the interests of local governments with market development is an important issue for developing and transition economies. Using a panel data set from China, we investigate the relationship between provincial government’s fiscal incentives and provincial market development. We report three empirical findings. First, we find that during the period of “fiscal contracting system” the discrepancy between ex ante contracts and ex post implementation was relatively small, suggesting that the fiscal contracts were credible. Second, we find a much higher correlation, about four times, between the provincial government’s budgetary revenue and its expenditure during 1980s and 1990s as compared to 1970s, demonstrating that provincial governments faced much stronger ex post fiscal incentives after reform. Third, we find that stronger ex ante fiscal incentives, measured by the contractual marginal retention rate of the provincial government in its budgetary revenue, are associated with faster development of the non-state sector as well as more reforms in the state sector in the provincial economy. This holds even when we control for the conventional measure of fiscal decentralization. Finally, we compare federalism, Chinese style, to federalism, Russian style.
4
Rakow, Donald A., Meghan Z. Gough und Sharon A. Lee. „A Look at the Future of Public Gardens“. In Public Gardens and Livable Cities, 156–60. Cornell University Press, 2020. http://dx.doi.org/10.7591/cornell/9781501702594.003.0008.
Der volle Inhalt der QuelleAnnotation:
The final chapter provides a detailed analysis of strategies for successful partnerships and how they can be evaluated. It talks about the American Public Gardens Association's vision to make public gardens an indispensable part of communities. The APGA defines public gardens as institutions that maintain “collections of plants for the purposes of public education and enjoyment, in addition to research, conservation, and higher learning.” Gardens can best lead the way by establishing and demonstrating effective biodiversity conservation strategies in the midst of rapidly changing natural landscapes. One strategy is to preserve locally, regionally, or globally endangered species in their native habitats, which is known as in situ conservation. A second strategy is for public gardens to establish ex situ seed banks or gene banks at their sites that will preserve the genetic identities of species threatened or extirpated in the wild. Public gardens also need to be paragons of sustainable behavior, whether through LEED-certified buildings, SITES-approved landscapes, the use of solar panels and windmills, reduction or elimination of pesticides, or the use of electric vehicles. The public garden of the future will need to partner with architects, urban planners, and progressive corporations to produce a new generation of green buildings and urban gardens, so that cities will become centers of clean air and renewable energy and provide all their residents with easy access to nature.
5
Fox, Michael H. „Global Climate Change: Real or Myth?“ In Why We Need Nuclear Power. Oxford University Press, 2014. http://dx.doi.org/10.1093/oso/9780199344574.003.0006.
Der volle Inhalt der QuelleAnnotation:
We, the teeming billions of people on earth, are changing the earth’s climate at an unprecedented rate because we are spewing out greenhouse gases and are heading to a disaster, say most climate scientists. Not so, say the skeptics. We are just experiencing normal variations in earth’s climate and we should all take a big breath, settle down, and worry about something else. Which is it? A national debate has raged for the last several decades about whether anthropogenic (man-made) sources of carbon dioxide (CO2 ) and other so-called “greenhouse gases“ (primarily methane and nitrous oxide) are causing the world to heat up. This phenomenon is usually called “global warming,” but it is more appropriate to call it “global climate change,” since it is not simply an increase in global temperatures but rather more complex changes to the overall climate. Al Gore is a prominent spokesman for the theory that humans are causing an increase in greenhouse gases leading to global climate change. His movie and book, An Inconvenient Truth, gave the message widespread awareness and resulted in a Nobel Peace Prize for him in 2008. However, the message also led to widespread criticism. On the one hand are a few scientists and a large segment of the general American public who believe that there is no connection between increased CO2 in the atmosphere and global climate change, or if there is, it is too expensive to do anything about it, anyway. On the other hand is an overwhelming consensus of climate scientists who have produced enormous numbers of research papers demonstrating that increased CO2 is changing the earth’s climate. The scientific consensus is expressed most clearly in the Fourth Assessment Report in 2007 by the United Nations–sponsored Intergovernmental Panel on Climate Change (IPCC), the fourth in a series of reports since 1990. The IPCC began as a group of scientists meeting in Geneva in November 1988 to discuss global climate issues under the auspices of the World Meteorological Organization and the United Nations Environment Program.
Konferenzberichte zum Thema "Demonstrativní panel"
1
Martins, João, João Paulo Barraca, Diogo Gomes und Rui L. Aguiar. „Demonstrating the AMazING panel“. In the seventh ACM international workshop. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2348688.2348709.
Der volle Inhalt der Quelle
2
Tanzer, H. J., M. R. Cerza und J. B. Hall. „High Capacity Demonstration of Honeycomb Panel Heat Pipes“. In SAE Aerospace Technology Conference and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1986. http://dx.doi.org/10.4271/861833.
Der volle Inhalt der Quelle
3
Conrardy, C., T. D. Huang, D. Harwig, P. Dong, L. Kvidahl, N. Evans und A. Treaster. „Practical Welding Techniques to Minimize Distortion in Lightweight Ship Structures“. In SNAME Maritime Convention. SNAME, 2005. http://dx.doi.org/10.5957/smc-2005-p27.
Der volle Inhalt der QuelleAnnotation:
The trend in both military and commercial shipbuilding is the increased use of thin steel to reduce weight and improve performance. Complex panel structures have thickness transitions for weight and structural optimization with multiple inserts ranging from 5 to 45 mm. Welding practices developed for thicker plate can result in significant out-of-plane distortion when applied to thin-plate structures. Buckling distortion of complex lightweight panels has resulted in a significant negative effect on manufacturing cost and production throughput, limiting the shipbuilders’ ability to produce innovative ship designs. High fitting and welding costs are the consequence of this large welding distortion. This problem is exacerbated as the fairness requirements are tightened. New methods are needed to control distortion when welding thinner materials. To tackle the distortion problems, in 2002 Northrop Grumman Ship Systems initiated a multiyear program to develop distortion-control technology for complex panels. This paper reports the results of a study to develop “best practices” for welding of lightweight structures. Control of welding distortion for thin structures requires control of each welding operation from butt-welding of plates through to unit assembly. A general philosophy was applied to minimize welding heat input while maximizing restraint during unit construction. To achieve this, the following techniques were evaluated: * Increasing restraint during each welding operation, * Improving fitting practice, * Weld sequencing and, * Minimizing welding heat input. * Additionally, an active distortion mitigation approach, known as Transient Thermal Tensioning, was investigated for reduction of buckling distortion during thin-panel longitudinal stiffener welding. A series of tests were performed to evaluate various distortion control approaches and to optimize production processes. The culmination of the project will involve demonstrating best practices in the production of thin steel structures. A plan is also being developed for implementing the most advantageous approaches into production.
4
Koohang, Alex, Tom Seymour, Robert Skovira und Gary DeLorenzo. „Panel Discussion: Challenges of Open Educational Resources“. In InSITE 2007: Informing Science + IT Education Conference. Informing Science Institute, 2007. http://dx.doi.org/10.28945/3050.
Der volle Inhalt der QuelleAnnotation:
Open Education Resources (OERs) are defined as “technology-enabled, open provision of educational resources for consultation, use and adaptation by a community of users for noncommercial purposes. They are typically made freely available over the Web or the Internet. Their principal use is by teachers and educational institutions to support course development, but they can also be used directly by students. Open Educational Resources include learning objects such as lecture material, references and readings, simulations, experiments and demonstrations, as well as syllabi, curricula and teachers' guides.” UNESCO (2002, paragraph 3)
5
Lilly, Jared, Bethany Hansen, Ryan Lotz, Darren Hartl, Thomas Cognata, Priscilla Nizio und Connor Joyce. „Development and Experimental Demonstration of a Shape Memory Alloy-Based Adaptive Two-Phase Radiator for Space Applications“. In ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2361.
Der volle Inhalt der QuelleAnnotation:
Abstract Future space exploration, such as the Artemis program, journeys to Mars, and future lander missions will require thermal control systems (TCSs) with the ability to adapt to a wide range of thermal loads due to vastly fluctuating external temperatures. Current TCSs employ radiators that can achieve a turndown ratio (defined as the ratio of the maximum to minimum heat rejection rates) of 12:1 by utilizing regenerative heat exchangers and a two-fluid-loop system, both of which are heavy and complex. However, future missions will demand radiators that can provide turndown ratios of 12:1 while remaining light, functionally passive, and simply designed. Previous work has investigated using shape memory alloy (SMA) components in single phase radiator prototypes to achieve efficient heat rejection. Preliminary analysis shows that SMA-based radiators can enable turndown ratios as high as 37:1. In this paper, the design, fabrication, and testing of an SMA torque tube driven radiator prototype is discussed. The SMA torque tube is attached to a heat rejecting panel that resembles flat radiator panels currently installed on the International Space Station. As the temperature of the working fluid in the TCS increases, the SMA torque tube actuates and rotates the panel, allowing for more radiative heat rejection to occur. This new design matures the concept past a previous prototype that merely demonstrated actuation under single-phase (e.g., liquid water) flow. The current radiator prototype has been designed to function not only with closed-loop, single-phase fluid flow, but also in conjunction with a two-phase TCS and even as a heat pipe. Both approaches take advantage of phase transformation of the working fluid to improve overall TCS efficiency and decrease complexity. During testing, a heated two-phase working fluid was circulated through the system, resulting in a maximum angular actuation of 67 degrees, thus demonstrating two-phase operation for the first time. These results give confidence that an SMA torque tube-driven radiator can outperform current radiators as development continues.
6
Danko, Matus, Michal Taraba, Juraj Adamec, Branislav Hanko und Peter Drgona. „CAN BUS demonstration panel and its visualization using modular instrumentation“. In 2018 ELEKTRO. IEEE, 2018. http://dx.doi.org/10.1109/elektro.2018.8398281.
Der volle Inhalt der Quelle
7
Kim, Dowan, Seokbong Park, Mina Heo, Daeyeon Choi und Hyunchul Jung. „Demonstration of Fine Pitch RDL in Fanout Panel Level Packaging“. In 2021 IEEE 71st Electronic Components and Technology Conference (ECTC). IEEE, 2021. http://dx.doi.org/10.1109/ectc32696.2021.00175.
Der volle Inhalt der Quelle
8
Tawara, Yuzuru, Shinji Hara, Kazuo Koga und Kenji Tsuji. „Application of Cloud Chambers for Heuristic Comprehension of Radiation“. In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-16909.
Der volle Inhalt der QuelleAnnotation:
In the nuclear-related public relation center, a variety of displays such as models of nuclear facility, panel presentations to explain radiation properties, radiation detectors are used for the visitors to help the understanding of nuclear power and radiation. The PR center demonstrates various aspect of the radiation such as the presence of natural background radiations around us in the daily life, shielding effect for the different kind of radiations. Cloud Chambers are often used to demonstrate the presence of natural background radiation, showing tracks caused by the ionizing effect. The shielding effect of radiation is demonstrated by inserting a shield material between a radiation source and the detector such as GM counter. It is usually illustrated in the panel that the penetration properties are different for kinds of radiation but actual demonstration is seldom used. Then a question arises that people cannot properly understand overall characteristics of the radiation in the above described demonstrations in the PR center. So we have been trying to improve a utilization method of a cloud chamber to help the deep understanding of properties of radiation. The improved cloud chamber has the area size of 225 mm × 225 mm with 100 mm in depth and has the structure for the function of insertion and extraction of both a radiation source and a shield material, independently. When a radiation source such as Cs-137 or Fe-55 is inserted in the chamber, it is clearly shown that high energy electron created by gamma-ray or X-ray emitted from such radioisotope can make track with different length. It is also shown using lantern core with thorium-series isotopes that thick track can be made by alpha particle. Fe-55 radioisotope generates 5.9 keV X-rays, which produces about 1mm track in the chamber through photoelectron. When a shield material of lead with a thickness of 1mm was inserted in front of the source, the fading out of the tracks is clearly observed. Thus shielding effect can be easily confirmed by eye using cloud chamber. The demonstrations of shielding effect described above can help more clear and essential understanding of the radiations. This was shown by the questionnaire survey done before and after the demonstrations for the 32 participants. For further improvements of the cloud chamber, we are planning to enlarge the size of cloud chamber and to get much clearer track image by improving track illumination method. Finally we will re-consider more effective explanation to give correct understanding of the radiation and will verify the effectiveness of utilization method of new cloud chamber.
9
Shimomura, Yutaro, Takuya Shimada, Ryuya Kirihara und Takeshi Kumaki. „Live Demonstration: Development of LED-Based Stego-Panel for New Smartphone Usage“. In 2020 IEEE International Symposium on Circuits and Systems (ISCAS). IEEE, 2020. http://dx.doi.org/10.1109/iscas45731.2020.9181264.
Der volle Inhalt der Quelle
10
Freimuth, Justin M., und Ming Ma. „Oil Tanker Cargo Hold Structural Optimization Using Ultimate Limit States“. In SNAME Maritime Convention. SNAME, 2014. http://dx.doi.org/10.5957/smc-2014-t40.
Der volle Inhalt der QuelleAnnotation:
This paper presents a method to optimize an oil tanker cargo hold’s structural scantlings based on stiffened panel ultimate limit states. Two different tanker models and their results are presented demonstrating this optimization procedure using models of varying mesh densities. The full ship finite element models are loaded with multiple load cases, design bending moments, external hydrostatic pressure, and internal tank pressure. The working stresses of a stiffened panel, which are used for the panel’s ultimate limit states assessment, are obtained by 3D finite element analysis. Each stiffened panel is then optimized using multi-objective genetic algorithms for its weight and safety. The optimization process is performed on two different versions of the same vessel: one with all stiffeners defined explicitly and one with internal stiffeners (allowing the stiffener layout to be changed during the optimization). The numerical results show that the proposed method is very useful to perform ultimate strength based ship structural optimization with multiple objectives, namely minimizing the structural weight and maximizing structural safety.
Berichte der Organisationen zum Thema "Demonstrativní panel"
1
McCarthy, A. Demonstration model circuit panel for silicon-on-insulator microelectronics and flat-panel 1994 LDRD final report 94-FS-041. Office of Scientific and Technical Information (OSTI), September 1995. http://dx.doi.org/10.2172/120880.
Der volle Inhalt der Quelle
2
Alan E. Bland. Ash-Based Building Panels Production and Demonstration of Aerock Decking Building Product. Office of Scientific and Technical Information (OSTI), Juni 2007. http://dx.doi.org/10.2172/910142.
Der volle Inhalt der Quelle
3
MATERIALS SYSTEMS INC CONCORD MA. Manufacturing Demonstration Of Large 1-3 Piezoelectric Ceramic/Polymer Composite Panels Using Ceramic Injection Molding. Fort Belvoir, VA: Defense Technical Information Center, September 1994. http://dx.doi.org/10.21236/ada294555.
Der volle Inhalt der Quelle
4
Richman, Eric E. New Technology Demonstration Program - Results of an Attempted Field Test of Multi-Layer Light Polarizing Panels in an Office Space. Office of Scientific and Technical Information (OSTI), Juni 2001. http://dx.doi.org/10.2172/965725.
Der volle Inhalt der Quelle
5
Richman, Eric E. New Technology Demonstration Program - Results of an Attempted Field Test of Multi-Layer Light Polarizing Panels in an Office Space. Office of Scientific and Technical Information (OSTI), Juni 2001. http://dx.doi.org/10.2172/782080.
Der volle Inhalt der Quelle
6
Kung, S. C., und R. J. Kleisley. Full-scale demonstration of low-NO{sub x} cell{trademark} burner retrofit: Addendum to long-term testing report, September 1994 outage: Examination of corrosion test panel and UT survey in DP&L Unit {number_sign}4. Office of Scientific and Technical Information (OSTI), Juni 1995. http://dx.doi.org/10.2172/367096.
Der volle Inhalt der Quelle
7
Demonstration of membrane aeration panels: City of Geneva Wastewater Treatment Plant. Final report. Office of Scientific and Technical Information (OSTI), Januar 1995. http://dx.doi.org/10.2172/26393.
Der volle Inhalt der Quelle