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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.
721

Investigation and implementation of the OMA BCAST Service Interaction Function

Lundkvist, Karl-Johan January 2007 (has links)
<p>This thesis is a study of a new specification for end user interactivity developed by the Open Mobile Alliance, the specification is called OMA BCAST Service Interaction Function. The specification is one part of the OMA BCAST Service Enabler, which enables service delivery to mobile devices, where the most common service is mobile television. The Service Interaction Function enables end user interactivity related to a service, this could be a poll about the current television program or a chat where every message is presented to the users that are watching the same channel.</p><p>The specification is still of draft version and the scope of this thesis has been to investigate the Service Interaction Function and implement a PC prototype.</p>
722

Challenges in fuzzy front end of new product development within medium-sized enterprises : A case study on Swedish manufacturing firms

Korityak, Agnesa, Cao, Yue January 2010 (has links)
<p>The business environment is changing rapidly, becoming very competitive and challenging for all firms, and particularly for small and medium enterprises (SMEs). As innovation and new product development represent valuable sources for SMEs’ future sustainability and development, making these processes more effective is essential. Previous literature, with the focus on large firms, underlined the importance of efficiently managing the early period of new product development (NPD), as this can reduce the product’s time to market and increase its performance. For this reason, contributing to a developed understanding of the challenges of medium-sized firms in managing this phase, the fuzzy front-end (FFE) of NPD, is the aim of this study.</p><p>The theoretical framework of this study combines prior theories that relate to the difficulties, shortcomings, challenges that SMEs meet during the whole NPD process, including FFE, and theories that resulted from research on FFE in large firms. The structure is based on four elements referring to managing the idea generation process, new product development team, evaluation of product concept feasibility, and the organization of FFE.</p><p>A qualitative strategy and a research design with two case studies on high-tech, medium-sized manufacturing firms were used in reaching the purpose of this study. This methodology choice reflects the explorative purpose of this research. The empirical data are mainly primary data, collected during three interviews with development managers and a product developer, completed as well with secondary data like general company information, collected from companies’ websites.</p><p>The analysis of empirical findings revealed some relevant conclusions, which can bring value to the research area, and also to the practice. Our findings show that lack of communication with customers during the whole FFE phase, collecting limited or inaccurate information to be processed during this phase, finding the right formalization degree of FFE activities, determining the complexity of the product concept, and assessing external technology and expertise, represent the main challenges faced by medium-sized firms in the FFE of NPD.</p><p>The study’s practical relevance consists in the advices and solutions suggested to managers for overcoming the challenges of the FFE phase and improving their results in the development projects. The theoretical implications reflect the importance of organizational size variable in association with the challenges of FFE.</p><p>The sample of only two cases and the quality of the empirical data collected from two high-tech Swedish manufacturing firms which have a large focus on innovation are the main limitations of this study, as these medium-sized firms have gained some experience to face the specific challenges of FFE of NPD and the data they provide may be influenced by this aspect.</p>
723

Från känsla av kontroll till att famla i mörker : En litteraturstudie av närståendes upplevelser av delaktighet vid vård i livets slut / From feeling control to groping in the dark : A literature review of relatives experiences of participation in the end of life

Karlsson, Alexandra, Senekovic, Sofie January 2009 (has links)
<p><p>Bakgrund: Att vara närstående åt någon som befinner sig livets slut är en stor påfrestning där delaktigheten blir central. Hur närstående upplever delaktigheten är beroende på hur information ges. Att vara delaktig innebär att ha en del i, att vara närvarande och medverka i vården av en annan person. Utifrån ett systemteoretiskt tänkande betraktas personer i sitt totala sammanhang där även de närstående hamnar i fokus. Syfte: Att belysa närståendes upplevelser av delaktighet i samband med vård i livets slutskede. Metod: Studien genomfördes som en litteraturöversikt baserade på vetenskapliga artiklar som analyserades med en innehållsanalys. Resultat: Bygger på tre huvudkategorier; från att ha kontroll till att famla i mörker, att befinna sig i en svår livssituation och att kastas in i en ny roll. Delaktigheten yttrade sig i positiva och negativa känslor som närstående pendlade mellan. Andershed och Ternestedts förståelseram användes för att strukturera resultatet. Slutsats: Då närstående befinner sig i en besvärlig situation är det väsentligt att vårdpersonal ger utrymme, involverar och ser till närståendes individuella behov. Att byta roll med de närstående, ställa öppna frågor kan göra att de blir bekräfta och sedda vilket kan vara ett sätt att göra dem delaktiga på ett meningsfullt sätt.</p></p> / <p><p>Background: Being a relative to someone who is at the end of life is a big strain in which participation is a key. How relatives experience participation is dependent on how the information is given. Being involved means to be a part of, to be present and to participate in the care of another person. On the basis of systems theory people are considered in their total context, where relatives are also in focus. Aim: To describe relatives’ experiences of participation during end of life care. Method: The study was conducted as a literary review based on scientific articles that were analyzed with a content analysis. Results: Based on three main categories, from having the control to a grope in the dark, to be in a difficult situation of life and to being thrown into a new role. The participation of the relatives oscillated between positive and negative feelings. Andershed and Ternestedts framework was used to structure the results. Conclusion: When relatives are in a difficult life situation it is essential that health professionals give them space, involve them, and ensure their individual needs. Changing roles with relatives and asking open-ended questions can make relatives feel like participants who are confirmed and involved in a meaningful manner.</p></p>
724

Fitting Objects Into Holes : On the Development of Spatial Cognition Skills

Örnkloo, Helena January 2007 (has links)
<p>Children’s ability to manipulate objects is the end-point of several important developments. To imagine objects in different positions greatly improves children’s action capabilities. They can relate objects to each other successfully, and plan actions involving more than one object. We know that one-year-olds can insert an object into an aperture. Earlier research has focused on the start and goal of such actions, but ignored the way in between. This thesis shows that children are unable to fit an object into an aperture unless they can imagine the different projections of the object and rotate it in advance. The problem of how to proceed with an object-aperture matching was studied in 14- to 40-month-old children with a box, different holes and a set of fitting wooden blocks. Study I focused on how to orient a single object to make it fit. Studies II and III added a second object or aperture, introducing choice. In Study I there was a huge difference between 18 and 22 months in solving the fitting problem. Successful insertion was related to appropriate pre-adjustments. The older children pre-adjusted the object orientation before arriving at the aperture(s). The younger used a feedback strategy and that did not work for this task. To choose was more difficult than expected; one must not only choose one alternative, but also inhibit the other. Fifteen-month-olds were unable to choose between sizes and shapes, 20-month-olds could choose between sizes, 30-month-olds could choose between sizes and shapes, but not even 40-month-olds could choose between objects with different triangular cross-sections. Finally, the relationships between an object and an aperture, supporting surface or form were investigated. When comparing tasks requiring relationships between an object’s positive and an aperture’s negative form, between a 3D and a 2D, and between two 3D-forms, we found that the main difficulties is relating positive and negative form.</p>
725

End-user assertions : propagating their implications

Summet, Jay W. 23 July 2001 (has links)
Spreadsheet languages are the most commonly used end-user programming paradigm, yet spreadsheets commonly contain errors. Research shows that a significant number of spreadsheets (20%-40%) created by end users contain errors. In an attempt to reduce this error rate, this work presents an assertion propagation system for an end-user spreadsheet programming language, along with proofs of correctness, and complexity analysis. In addition to the traditional benefits of assertions (dynamic error checking and the documentation of programmer assumptions) this system deductively propagates the implications of assertions. This propagation adds two benefits, the cross-checking of program logic, and additional immediate visual feedback about the range of behavior of the program code for the end-user. / Graduation date: 2002
726

FAR : an end-user language to support cottage e-services

Chekka, Sudheer Kumar 16 July 2001 (has links)
E-commerce has begun to evolve beyond simple web pages to more sophisticated ways of conducting e-business transactions, such as through electronic advertising, negotiation, and delivery. However, to participate in these advances requires the skills of professional programmers, and end-user owners of small businesses often cannot justify this expense. In this thesis, we present FAR, an end-user language to offer and deliver e-services. The novel aspects of FAR are its support of small e-services and its multiparadigm approach to combining ideas from spreadsheets and rule-based programming with drag-and-drop web page layout devices. / Graduation date: 2002
727

Tool Life and Flank Wear Modeling of Physical Vapour Deposited TiAlN/TiN Multilayer Coated Carbide End Mill Inserts when Machining 4340 Steel Under Dry and Semi-Dry Cutting Conditions

Chakraborty, Pinaki 03 January 2008 (has links)
This study investigates the tool wear of advanced PVD TiALN/TiN multilayer coated end mill inserts when dry and semi-dry machining 4340 low alloy medium carbon steel. A factorial design of experiment setup consisting of two levels of speed, three levels of feed, two levels of depth of cut, and two levels of cutting conditions (semi-dry and dry) was used for the study. The combination of cutting conditions that gave the best response for different components of cutting force, cutting power, surface roughness and tool life were determined using MANOVA & ANOVA analysis and Tukey comparison of means test using MINITAB statistical software package. From a study of the Energy Dispersive X ray (EDX) analysis and primary back scatter images obtained from the worn out crater surface of the insert, it was observed that diffusion wear prevailed under both dry and semi-dry machining conditions. A tool life model was developed using multiple regression analysis within the range of cutting conditions selected. A model for flank wear progression was also developed using mixed effects modeling technique using S Plus statistical software package. This technique takes into account between and within work piece variations during end milling and produces a very accurate model for tool wear progression. This is the first time application of the mixed effects modeling technique in metal cutting literature.
728

Terminal Sedation

Smith, Karen L 01 July 2011 (has links)
This dissertation will support full ethical endorsement of terminal sedation for those most urgently in crisis and need of beneficence, those who are dying and in the final hours or days and suffering. To clarify the practice I first detail ethical differences between euthanasia, physician assisted suicide and terminal sedation. Moreover, I identify new areas where harms and benefits need to be evaluated as affecting not only patients, but also families and caregivers. I evaluate the current practice to allow the development of ethical guidelines and greater consensus on deciding the hard cases. This work may also serve to assist those looking to enlarge the practice in the future with ETS for those with debilitating diseases or disability, but they are not my primary goal. Below is the standard I propose for moral allowability for the use of terminal sedation. I will refer to it often in the pages that follow simply as my standard . Terminal sedation is the appropriate and intentional use of medications (benzodiazepines and/or narcotics) to produce ongoing, deep unconsciousness upon 1) a terminal patient’s (or surrogates) request due to 2) suffering intractable pain or other distressing clinical symptoms intolerable to the patient when 3) death is expected within hours or days (less than two weeks) due to the terminal illness, injury, or disease. I offer two versions of initial guidelines for development of hospital policy. The first version outlines minimal guidelines that ought to be utilized to allow TS for patients who fit my standard. The minimal guideline is based upon the recommendations of the American Medical Association with some modifications. The guideline is admittedly restrictive in hopes of gaining wider societal support for a currently controversial practice. Secondly, I offer more moderate guidelines for policy that could become a standard in the future. It maintains the restrictive focus of the minimal guidelines and offers additional education and support to others which has yet to be broadly provided. The moderate guidelines would mark an important step forward for allowing more choices in dying and offering additional supports to those involved with dying patients.
729

Garbage in, garbage out? An empirical look at oracle mistakes by end-user programmers

Phalgune, Amit 12 October 2005 (has links)
Graduation date: 2006 / End-user programmers, because they are human, make mistakes. However, past research has not considered how visual end-user debugging devices could be designed to ameliorate the effects of mistakes. This paper empirically examines oracle mistakes mistakes users make about which values are right and which are wrong to reveal differences in how different types of oracle mistakes impact the quality of visual feedback about bugs. We then consider the implications of these empirical results for designers of end-user software engineering environments.
730

An Exploratory Study of the Effects of Mild Cognitive Impairment on Elderly Internet Users

Joshua Berkov 05 July 2007 (has links)
This study focuses on the effects of Mild Cognitive Impairment and other minor memory impairments on a person’s ability to successfully use the Internet. Participants over sixty-five years of age were recruited from retirement communities and were selected based on self-reports of Mild Cognitive Impairment or other cognitive difficulties when using the Internet. Interviews with the participants focused on their abilities to use Email, Chat/Instant Messenger and the World Wide Web. Participants were then asked to step through several Internet-related tasks in order to further identify problem areas. Seven participants were interviewed, and six of them completed the optional observation session. The data collected from the interviews and observation sessions were then broken down into different categories, based on the type of difficulties experienced during Internet use. Finally, recommendations were made for good Web design practices intended to overcome the difficulties identified during the study.

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