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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.
11

A Cognitive Semantics analysis of the Lexical Units AT, ON and IN, in English

Navarro i Ferrando, Ignasi 16 October 1998 (has links)
The use-in-context of three lexical units - at, on and in - is analized in thousands of examples from the BROWN corpus of written American English. Syntactic scrutiny confirms the lexicon-grammar continuum, as far as particles cannot be categorized according to necessary and sufficient conditions. Semantic analysis is performed according to a polysemy model based on prototypes and radial categories. It is shown that the same semantic structure is common to all the uses of these particles, as a result of partial sanction and semantic extension of a single category. A prototype is posed for each category, based on topological, force-dynamic, and functional experiential dimensions, according to human perception of objects and their relationships. Particularly, the semantic structure of AT is developed on the basis of an ENCOUNTER schema, that of ON follows from a SUPPORT schema, and finally, that of IN derives from both an INCLUSION and a MEDIUM schema.
12

Development of a prototype for a game including an industrial robot

Guijarro Chirosa, María del Sol January 2009 (has links)
The aim of this essay is to describe the development of two prototypes, a physical one and a computer one, for a ball game involving interaction with an industrial robot.The purpose of the game is to attract young people, especially young women, to engineering, for amusement or education, at exhibitions or other student environments. This project in Product Design Engineering was initiated by the Centre for Intelligent Automation, a research group of Skövde University who offered the task in cooperation with two other areas of engineering, i.e Automation Engineering and Computer Science. The entire robot game project was developed by a five-woman team, which resulted in three different projects belonging to each study. The design engineering task was carried out by analysing the component needs, taking in consideration all the important factors involved, to recognize problems and limitations, and focus on prototypes. The development process included concept generation and evaluation, prototyping and detail design and testing and refinement of the physical prototype. As a result the prototype showed an intuitive way to play the game, and a 3D CAD model was developed to show an alternative design which found solutions to some of the problems shown by the physical one.
13

Development and Evaluation of a Small Punch Testing Device

Ottosson, Jan Benjamin January 2010 (has links)
In the turbine industry today, thermal barrier coatings are a commonly used, these are 0.1-2mm thick. So to be able to do some type of mechanical testing to receive material data so one can build an opinion regarding the health of the material. One needs a procedure that can work with small specimens and achieve clear results that can be transformed and compared with known data and known procedures. One of those methods is Small Punch Testing. This thesis describes one way to develop and test a functioning prototype of a Small Punch Testing device. The thesis includes; the reason it was developed in the beginning and how it has been developed throughout the decades, also in which areas the main research is made. It also shortly describes a working procedure in Ansys to get a Finite Element Method [FEM] model working. This method showed itself as useful, when just a small sample is at hand. The trials in this thesis also show that repetitive test can be done with good results which can be compared with real and FEM analysis data such as σ uts· / Inom turbin industrin idag så är keramiska värme barriärer vanligt förekommande dessa är normalt 0,1-2mm tjocka. För att kunna utföra mekanisk provning som grund för att bilda en åsikt om materialets kondition. Så behöver man en metod som kan åstadkomma tydliga data med små provbitar, Small Punch Testing är en av dem. Den här rapporten beskriver hur man kan gå tillväga för att få en fungerande prototyp. Den tar upp metodens ursprung och hur den har utvecklats under år tiondena, också mot vad den nuvarande forskningen riktar sig. Den beskriver även kort hur man ställer upp en finita element metod [FEM] modell i Ansys. Metoden visade sig användbar när man bara har en liten provbit att tillgå. Försöken visade att repetitiva tester kan göras med bra resultat som går att jämföra med verkliga och FEM analys data.
14

Role of Category Structure in Human Information Processing

Sempson, Stephen January 2006 (has links)
This investigation will use this ability in a different way. Studies have shown that a category can create a grade structure of prototypical items. We will take a graded structure generated by a category, and see if we can recreate the category based on presenting prototypical examples in a variety of ways. Five different sampling techniques will be used to determine which one is the best for category reconstruction. Since the items themselves have bits of information about the category, the number of samples presented will also be manipulated to determine if this is a factor in determining the category. The independent variables investigated were: sampling technique, and prompt conditions. In determining the effect of the independent variables on matching a category, the independent variables were also considered as mediating variables of each other. The method of opportunistic sampling was used for the surveys. The main participants were undergraduate 3rd year students taking a MSci 311 course at the University of Waterloo. Results indicate that there was no statistical significance. Fluctuations in significance levels indicate some random findings. Participants are not discriminating the samples or prompts which were given. This research is a contribution to this field because little research has been conducted in this area and implications are drawn for future research on the saliency of a category or attribute that can vary by context or knowledge
15

Design of mold to yield elastomeric membrane whose shape and size, when inflated, is similar to the shape of the human heart

Lagu, Amit Vinayak 15 November 2004 (has links)
Nearly five million Americans are living with heart failure and 550,000 new cases are diagnosed each year in the US. Amongst the new approaches to develop a better solution for Congestive Heart Failure, Ventricular Recovery (VR) holds the most promise. A team, under the guidance of Dr. Criscione in the Cardiac Mechanics Lab at Texas A&M University, is currently developing an investigative device which aims to assist in VR by restoration of physiological strain patterns in the myocardial cells. The contribution of this thesis has been towards the development of a molding apparatus that yields a polymeric membrane whose shape, when inflated, is similar to the shape of the human heart. This membrane would surround the epicardial surface of the heart, when used for the device being discussed and in particular for the prototypes being developed. Contribution also includes a testing apparatus that measures the inflation of a membrane and simulation to predict the behavior of isotropic ellipsoids upon inflation. After unsuccessful implementations of two processing techniques, the successful design, fabrication implementation and attachment method meets the design criteria and is based on a thermoforming technique. Inflation profiles for membranes developed using this technique were studied at different pressures, with the axis length as variable. At 1kpa, which is the normal coronary arterial pressure, the membrane with an axis length of 140mm was found to show a shape which is similar to the shape of the human heart. In order to better understand and predict the shape an isotropic ellipsoidal membrane would take upon inflation without experimentation, simulations were carried out. Successful conversion of ellipsoidal geometry, with a few degrees of freedom as parameters, aided in simulation.
16

Development of a prototype for a game including an industrial robot

Guijarro Chirosa, María del Sol January 2009 (has links)
<p>The aim of this essay is to describe the development of two prototypes, a physical one and a computer one, for a ball game involving interaction with an industrial robot.The purpose of the game is to attract young people, especially young women, to engineering, for amusement or education, at exhibitions or other student environments.</p><p>This project in Product Design Engineering was initiated by the Centre for Intelligent Automation, a research group of Skövde University who offered the task in cooperation with two other areas of engineering, i.e Automation Engineering and Computer Science.</p><p>The entire robot game project was developed by a five-woman team, which resulted in three different projects belonging to each study. The design engineering task was carried out by analysing the component needs, taking in consideration all the important factors involved, to recognize problems and limitations, and focus on prototypes. The development process included concept generation and evaluation, prototyping and detail design and testing and refinement of the physical prototype. As a result the prototype showed an intuitive way to play the game, and a 3D CAD model was developed to show an alternative design which found solutions to some of the problems shown by the physical one.</p>
17

Automatizuotas informacinės sistemos vartotojo sąsajos projektavimas / Automated design of information system user interface

Kupis, Aurimas 17 January 2007 (has links)
One of main task in information system development is to project good graphical user interface. It is used many different methods, tools and princess for automatic user interface generation. ODRES (output driven requirements engineering) method witch is developed in the department of information system has an ability to generate graphical user interface from its user developed specifications. These specifications are stored in specification storage – database and they are strictly defined. The tool used to generate graphical user interface from selected ODRES storage reads those specifications and transforms them into graphical elements. An engineer can change those elements. At the end of generation user interface prototype is saved in the same specifications storage.
18

Modeling and design of an electric all-terrain vehicle

Chevrefils, Adam R. 15 January 2009 (has links)
This thesis describes and evaluates the conversion of a conventional gasoline powered all-terrain vehicle (ATV) to an electric ATV. Preliminary studies are performed to obtain initial power and torque requirements for the vehicle. A detailed simulation model of the mechanical load is written and compared to manufacturer supplied data. The load model is then combined with a comprehensive electronic drive and motor simulation using an electromagnetic transient simulation program (PSCAD). A prototype of the vehicle is constructed by selecting the main components, an electric traction motor, batteries and a custom motor drive, using the simulation results. The results of both the simulation and prototypes are compared and evaluated.
19

Design of an e-registration prototype using HCI principles : with specific reference to tax registration / JT Terblanche

Terblanche, Juanita Tertia January 2013 (has links)
The aim of the research was: *to gain a better understanding on the concepts of Human-computer interaction (HCI) in general and the application of HCI principles in this field; to gain a better understanding of electronic registration systems (e-registration systems) and the use of web forms for this purpose; to gain a better understanding of which HCI principles could be applied to the design of a web form for e-registration; to apply the identified HCI principles to an example of a web form that was to be created; •to evaluate the design of the web form by means of different data-gathering techniques, and •to redesign the web form according to the data obtained from method triangulation. In order to achieve these objectives, the research used, firstly a research methodology to determine which research approach to follow. Secondly, a literature review was then used to identify which HCI principles would be appropriate in the interface design of a web form for e-registration. The empirical part of this study consisted of a web form created according to these HCI principles, which was then evaluated according to usability goals. The evaluation included different data-gathering techniques, namely an observation of the manner in which the participants interacted with the web form, an interview which consisted of in-depth questions regarding the improvement of the web form and a questionnaire which consisted of specific questions regarding the usability of the web form. The web form was redesigned according to the suggestions made by the participants and a final web form prototype was introduced. Finally, recommendations were made for additional studies in order to extend the study of HCI principles application in web forms, specifically in the design of tax e-registration systems in South Africa. / Thesis (MSc (Computer Science))--North-West University, Vaal Triangle Campus, 2013
20

Modeling and design of an electric all-terrain vehicle

Chevrefils, Adam R. 15 January 2009 (has links)
This thesis describes and evaluates the conversion of a conventional gasoline powered all-terrain vehicle (ATV) to an electric ATV. Preliminary studies are performed to obtain initial power and torque requirements for the vehicle. A detailed simulation model of the mechanical load is written and compared to manufacturer supplied data. The load model is then combined with a comprehensive electronic drive and motor simulation using an electromagnetic transient simulation program (PSCAD). A prototype of the vehicle is constructed by selecting the main components, an electric traction motor, batteries and a custom motor drive, using the simulation results. The results of both the simulation and prototypes are compared and evaluated.

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