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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Cognitive Structural Change and the Technological Design Process

Schurr, Kelly Laural 06 May 2013 (has links)
With increasing challenges from international competition and domestic demands for a technologically literate workforce, pressure is growing on the educational system to produce students that are literate in science, technology, engineering, and mathematics (STEM). Integrative STEM education utilizes design-based pedagogical approaches to teach science/math content and practices concurrently with technology/engineering content and practices (Wells & Ernst, 2012, para. 2). The discipline of technology education has traditionally implemented design-based pedagogical approaches. However, the discipline has not demonstrated through empirical research that its existence and pedagogies are beneficial to student learning and cognition (Lewis, 1999, 2006; Petrina, 1998; Wells, 2008, 2010; Zuga, 1994, 1997, 2001). The purpose of this study was to demonstrate that the technological design-based approach to teaching biotechnology literacy supports students' connections of science and technology concepts. Grounded in Ausubel's (1968) theory on meaningful learning and Novak's (1980) advanced organizer of concept mapping, this study examined evidence of high school students' cognitive structural change throughout the technological design-based approach to instruction. At three key intervals throughout the technological design process, students developed concept maps to document their understanding of the biology and technology concepts presented within the instructional materials. Data for this study included the students' constructed concept maps. To analyze the concept maps, the researcher used Hay et al.'s (2008) three-method analysis for measuring the quality of students' learning, and a qualitative analysis. Data analysis across all four methods indicated that all participants experienced a varying degree of growth in biology, technology, and integrative concepts and connections. Collectively this study supports the notion that the technological design-based approach to instruction does indeed (1) encourage meaningful learning, and (2) increase students' use of higher order thinking indicated by their abilities to demonstrate their use of schematic and strategic knowledge within their concept maps. The results of this study have direct implications within the areas of Technology Education, Science Education, classroom practice, and concept mapping. The discussion and implications suggest the need to expand the research conducted within this study, and to improve the methods for concept mapping analysis. / Ph. D.
2

Development of an Instrument to Evidence Knowledge Abstractions in Technological/Engineering Design-Based Activities

Figliano, Fred Joseph 24 May 2011 (has links)
This document outlines the development of a Design Log Instrument (DLI) intended for use in identifying moments of abstraction as evidence of STEM content knowledge transfer. Many theoretical approaches to explaining knowledge transfer are rooted in a belief that transfer occurs through knowledge abstraction (Reed, Ernst, & Banerji, 1974; Gick & Holyoak, 1980, 1983). The DLI prompts participants to be reflective during technological/engineering design activities. During the development of this instrument, a three-phase multiple case: embedded design was used. Three distinct Phases accommodated the collection and analysis of data necessary for this investigation: Phase 1: Pilot Case Study, Phase 2: Establishing Content Validity, and Phase 3: Establishing Construct Validity. During Phase 3, data from the DLI was collected at each of seven work sessions from two design teams each working through different engineering problems. At the end of Phase 3, a comparison of abstractions found in DLI responses and observation data (Audio/Video transcripts) indicated the extent to which the DLI independently reflected those abstractions revealed in observations (Audio/Video transcripts). Results of this comparison showed that the DLI has the potential to be 68% reliable to reveal abstracted knowledge. Further analysis of these findings showed ancillary correlations between the percent abstractions found per DLI reflective prompt and the percent abstractions found per T/E design phase. Specifically, DLI Reflective Prompts 2 and 3 correlate with T/E Design Phases 3 and 4 (58% and 76% respectively of the total abstractions) which deal with design issues related to investigating the problem and developing alternate solutions. DLI Reflective Prompts 4 and 5 correlate with T/E Design Phases 5 and 6 (22% and 24% respectively of total abstractions) which deal with design issues related to choosing a solution and developing a prototype. Findings also indicate that there are highs and lows of abstraction throughout the T/E design process. The implications of these highs and lows are that specific phases of the T/E design process can be targeted for research and instruction. By targeting specific T/E design phases, a researcher or instructor can increase the likelihood of fostering abstractions as evidence of STEM content knowledge transfer. / Ph. D.
3

Optimalizace pracoviště montáže cylindrických vložek s důrazem na ergonomii řešení a minimalizaci ztrát / Assembly workplace optimizationwith emphasis on ergonomy and loss minimization

Sobotka, Lubomír January 2011 (has links)
This diploma thesis describes optimization of assembly working place of cylinder locks brand FAB company ASSA ABLOY Rychnov, s.r.o. Theoretical part deals with universal process for designing manufacturing systems and for description of selected analytical and engineered methods and ergonomics .The practical part shows evaluation of current situation and create new time standards. in accordance with are designed 3 variants of the solution for lay out working place. For each variant is created simulation model, which is explore especially working load and automatic filling machine. The various options are compared by weight valuation and the most optimal is determined by maximal work in process and optimal warehouse supply of input components.
4

Návrh a posouzení uspořádání nové lakovací linky ve společnosti Automotive Lighting / Design and assessment of a new paint line arrangement at Automotive Lighting

Bouček, Filip January 2013 (has links)
The thesis deals with the design and arrangement of a new paint line at company Automotive Ligting s.r.o in Jihlava. It deals with design of several possible options of arrangement of machines that are required for the processing of polycarbonate granules and their conversion into acrylic glass using two-component injection molding. The glass is then coated with the coating line which is part of the arrangement included in this project. Design of the individual sites and their organization is based on both the company's requirements and the principles of technological design. The best of the three options is analyzed in detail and evaluated from the economic point of view.
5

Projekt výrobní linky na dílce motorů / Project of line for engine parts production

Tuška, Jiří January 2009 (has links)
The topic of the thesis is counting the capacity calculations for two and three-shift operation of the four components of jet engines, deisgn layouts of each workstation of line, compare the cost of the two and three-shift operation and recommendation of appropriate option.
6

Technologické a ekonomické aspekty aplikace CNC obráběcích center / Technological and economical aspects aplication CNC machining centers

Martiňák, Marek January 2010 (has links)
The Aim of this diploma thesis has been to analyse the application of the CNC machining centers for the production especially with concentration on accuracy and economical aspect of the machining process. After the study of the literature and making familiar with the production on the CNC machine tool of the type Deco Sigma 20 ( manufacturer, the firm Tornos ) it has been evaluated the technology of the design of the chosen part, its machining accuracy and found out the economical parameters of this machinery for this chosen part as a necessary supposition for securing the correct production in accordance with the requirements of the client. The described process of the technological and economical preparation for the production as well as its checking can be used in future for the proposals of the further similar parts.
7

Detailní projektování technologického pracoviště ve firmě Kovot Invest s.r.o. / Detailed project proposal of a technological workplace in the company Kovot Invest s.r.o.

Tichý, Jan January 2017 (has links)
The diploma thesis deals with the design of a new production hall for sheet metal processing in KOVOT Invest s.r.o. The content of the thesis is the analysis of the current state, the capacity calculations of individual technologies and warehouse management. Further design of the layout solution in the hall and economic evaluation of the investment.
8

NÁVRH KŘÍDLA PRO LETOUN KATEGORIE CS LSA / Design of Wing of CS LSA Category Aircraft

Madola, Ondrej January 2014 (has links)
The aim of the thesis is design and technological design of wing with significant reduction manual work and number of preparations in preparing part of structures. The first part of the work is to explanation the issues and machining metal parts forming wings and also the use of CAD systems. The next section describes several design proposals wings, strength test and compare price and weight of main girders with breams made of L-profiles. Followed by the technological process of production individual part design and control hems of sheet metal part design. The conclusion is dedicated to building assembler wings.
9

Příprava a organizace výstavby mostu na Silnici II/377 / Project planning and management of construction of the bridge on the road II / 377

Soukup, Ondřej January 2017 (has links)
The subject of this thesis the construction and technological preparation for the construction of the bridge ev.č. 377-007 across the Býkovka river in the municipality Rájec - Jestřebí, which is part of the reconstruction of a main road II / 377 Bořitov - Rájec. The thesis is elaborated a technical report on the structural and technological project, coordinating construction situation, the situation with wider relationships routes following the stages, time and financial plan – by objects, study the implementation of major technological stages of the building SO203 project site equipment, design of the main construction machines and mechanisms, the timetable of the main building structure, workers deployment plan, plan of machines usage, a plan for securing material resources for SO 203, technological regulation for the implementation of bored piles of, inspection and test plan for pilots, budget SO 203, sequence diagram construction, control and monitoring plan and calculation of bearing capacity of the bridge foundation piles.
10

TEACHER SUPPORTS USING THE FACILITATOR MODEL FOR DUAL CREDIT IN OPEN ENDED DESIGN THINKING COURSEWORK: UNIVERSITY COLLABORATION AND HIGH SCHOOL IMPLEMENTATION

Scott Tecumseh Thorne (10730865) 30 April 2021 (has links)
The facilitator model for dual credit offers a way for student to earn directly transcripted credit to colleges and universities, overcoming many barriers faced by other dual credit models. Successful implementation of this model requires high degree of involvement from the cooperating institution. This IRB approved qualitative case study explored the needs of five teacher facilitators in both summer professional development and on-going support throughout the school year when implementing a facilitator model for dual credit with open-ended design coursework. Code-recode and axial coding techniques were applied to over 90 hours of transcribed data, artifacts, and observations from a seven month period to find emerging themes and offer recommendations for implementation.

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