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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

Document Retrieval Triggered by Spacecraft Anomaly: Using the Kolodner Case-Based Reasoning (CBR) Paradigm to Design a Fault-Induced Response System

Kronberg, F., Weiner, A., Morgan, T., Stroozas, B., Girouard, E., Hopkins, A., Wong, L., James, M., Kneubuhl, J., Malina, R. F. 10 1900 (has links)
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California / We report on the initial design and development of a prototype computer-mediated response system, the Fault Induced Document Officer (FIDO), at the UC Berkeley Center for EUV Astrophysics (CEA) Extreme Ultraviolet Explorer project (EUVE). Typical 24x7 staffed spacecraft operations use highly skilled expert teams to monitor current ground systems and spacecraft state for responding to anomalous ground system and spacecraft conditions. Response to ground system error messages and spacecraft anomalies is based on knowledge of nominal component behavior and the evaluation of relevant telemetry by the team. This type of human-mediated operation is being replaced by an intelligent software system to reduce costs and to increase performance and reliability. FIDO is a prototype software application that will provide automated retrieval and display of documentation for operations staff. Initially, FIDO will be applied for ground systems. Later implementations of FIDO will target spacecraft systems. FIDO is intended to provide system state summary, links to relevant documentation, and suggestions for operator responses to error messages. FIDO will provide the operator with near realtime expert assistance and access to necessary information. This configuration should allow the resolution of many anomalies without the need for on-site intervention by a skilled controller or expert.
2

Using Analogy to Acquire Commonsense Knowledge from Human Contributors

Chklovski, Timothy 12 February 2003 (has links)
The goal of the work reported here is to capture the commonsense knowledge of non-expert human contributors. Achieving this goal will enable more intelligent human-computer interfaces and pave the way for computers to reason about our world. In the domain of natural language processing, it will provide the world knowledge much needed for semantic processing of natural language. To acquire knowledge from contributors not trained in knowledge engineering, I take the following four steps: (i) develop a knowledge representation (KR) model for simple assertions in natural language, (ii) introduce cumulative analogy, a class of nearest-neighbor based analogical reasoning algorithms over this representation, (iii) argue that cumulative analogy is well suited for knowledge acquisition (KA) based on a theoretical analysis of effectiveness of KA with this approach, and (iv) test the KR model and the effectiveness of the cumulative analogy algorithms empirically. To investigate effectiveness of cumulative analogy for KA empirically, Learner, an open source system for KA by cumulative analogy has been implemented, deployed, and evaluated. (The site "1001 Questions," is available at http://teach-computers.org/learner.html). Learner acquires assertion-level knowledge by constructing shallow semantic analogies between a KA topic and its nearest neighbors and posing these analogies as natural language questions to human contributors. Suppose, for example, that based on the knowledge about "newspapers" already present in the knowledge base, Learner judges "newspaper" to be similar to "book" and "magazine." Further suppose that assertions "books contain information" and "magazines contain information" are also already in the knowledge base. Then Learner will use cumulative analogy from the similar topics to ask humans whether "newspapers contain information." Because similarity between topics is computed based on what is already known about them, Learner exhibits bootstrapping behavior --- the quality of its questions improves as it gathers more knowledge. By summing evidence for and against posing any given question, Learner also exhibits noise tolerance, limiting the effect of incorrect similarities. The KA power of shallow semantic analogy from nearest neighbors is one of the main findings of this thesis. I perform an analysis of commonsense knowledge collected by another research effort that did not rely on analogical reasoning and demonstrate that indeed there is sufficient amount of correlation in the knowledge base to motivate using cumulative analogy from nearest neighbors as a KA method. Empirically, evaluating the percentages of questions answered affirmatively, negatively and judged to be nonsensical in the cumulative analogy case compares favorably with the baseline, no-similarity case that relies on random objects rather than nearest neighbors. Of the questions generated by cumulative analogy, contributors answered 45% affirmatively, 28% negatively and marked 13% as nonsensical; in the control, no-similarity case 8% of questions were answered affirmatively, 60% negatively and 26% were marked as nonsensical.
3

Application of Knowledge Management in Petrochemical Plant ¡V CAPCO for example

Lin, Chin-Chen 07 August 2003 (has links)
none
4

Integrating Engineering and Communication Tools for the Automation of Design Rationale Capture

Mix, Kenneth John 09 March 2010 (has links) (PDF)
Product development is continually becoming more challenging as global competition requires more efficient design methods. The reuse of company knowledge, specifically the design rationale that occurs during projects is essential to success. This thesis presents a method for integrating engineering and communication tools for purposes of automating the capture of communication-based design rationale. The method is based on four basic principles: to integrate, to make data retrievable, to minimize user interaction, and to store as much DR as possible. The core method consists of two primary operations, the first being to capture the design rationale, and the second being to provide for effective retrieval. An implementation of this method that uses NX as the engineering tool and Skype VoIP software as the communication tool was created for the purpose of testing integration as a means of DR capture. The implementation was evaluated using four separate tests, which focus on efficiency of capture and retrieval, cost analysis, and user satisfaction. These results show that the tool provides improvement in each of the tested categories. From this testing I conclude that integrating communication and engineering tools is an excellent way to capture communication-based design rationale. The tool presented is more efficient than traditional methods in the test cases and provides a user-friendly solution to DR capture. This tool also has various other important applications, such as global collaboration and expectation management. It also provides an excellent framework for upcoming multi-user CAx tools.
5

Mapping of development process for Tacit knowledge transfer in Product development organization : Knowledge management in change managent / Mapping of development process for Tacit knowledge transfer in Product development organization : Knowledge management in change managent

Ganesh, Koushik, Pravin Kumar, Prithivraj January 2017 (has links)
The thesis is focused on developing a set of work standards or framework to the company, Isaberg Rapid which has changed its parent company and because of it lost many of its experienced employees. Subsequently a lot of implicit knowledge is lost along with the employees, which later became evident when challenges recurred in production. The aim of the research project is to create a proof methodology to avoid this loss by storing this tacit knowledge for any references, even if the employees involved with the product are lost.
6

A framework for knowledge capture and recovery in whole life costing practice

Tobin, Ndibarafinia Young January 2017 (has links)
In spite of the benefits of implementing whole life costing technique as a valuable approach for comparing alternative building designs allowing operational cost benefits to be evaluated against any initial cost increases and also as part of procurement in the construction industry, its adoption has been relatively slow due to the lack of tangible evidence, “know-how” skills and knowledge of the practice i.e. the lack of professionals in many establishments with knowledge and training on the use of whole life costing technique, this situation is compounded by the absence of available data on whole life costing from relevant projects, lack of data collection mechanisms and so on. This has proved to be very challenging to those who showed some willingness to employ the technique in a construction project. The knowledge generated from a project can be considered as best practices learned on how to carry out tasks in a more efficient way, or some negative lessons learned which have led to losses and slowed down the progress of the project and performance. Knowledge management in whole life costing practice can enhance whole life costing analysis execution in a construction project, as lessons learned from one project can be carried on to future projects, resulting in continuous improvement, providing knowledge that can be used in the operation and maintenance phases of an assets life span. This study aims to use knowledge management as a tool to address the obstacle of whole life costing outlined in this study by developing a framework for knowledge capture and recovery in whole life costing practice in construction. An extensive literature review was first conducted on the concept of knowledge management and whole life costing. This was followed by a semi-structured interview to explore the existing and good practice knowledge management in whole life costing practice in a construction project. The data gathered from the semi-structured interview was analysed using content analysis and used to develop the framework. From the results obtained in the study, it shows that the practice of project review is the common method used in the capturing of knowledge and should be undertaken in an organised and accurate manner, and results should be presented in the form of instructions or in a checklist format, forming short and precise insights. In order to efficiently and swiftly recover knowledge from previous whole life costing project, the knowledge must be characterised based on whole life costing processes and activities, by means of an IT system with components designed to manage knowledge and locate expertise. However; the framework developed advised that irrespective of how effective the approach to knowledge capture and recovery, the absence of an environment for sharing knowledge, would render the approach ineffective. Open culture and resources are critical for providing a knowledgesharing setting, and leadership has to sustain whole life costing knowledge capture and recovery, giving full support for its implementation. The framework has been evaluated by academics and practitioners who are experts in the area of whole life costing practice. The results have indicated that the framework and its components are both suitable and efficient.
7

The use of information and communication technology tools in managing indigenous knowledge in the province of KwaZulu-Natal, South Africa

Dlamini, Petros Nhavu January 2017 (has links)
A thesis submitted to the Faculty of Arts in fulfillment of the requirements for the Degree of Doctor of Philosophy in Library and Information Science in the Department of Information Studies at the University Of Zululand, South Africa, 2017 / The need to manage tacit indigenous knowledge (TIK) through Information and Communication Technology (ICT) tools is imperative because it is at risk of becoming extinct without proper recordable and management systems. Indigenous Knowledge (IK) is largely tacit in nature and is mainly preserved in the memories of elders which is a risk to its documentation and preservation. We argue that ICT can be used effectively for enabling documentation, access and use of IK in the modern society. The study mainly focused on the types of ICT tools used for capturing, storing and disseminating IK in South Africa’s KwaZulu-Natal province. Specifically, the study investigated the use and types of ICT tools, in the management of indigenous knowledge, in the province of KwaZulu-Natal. For the purpose of the study, five research objectives were used that guided the research questions. These research objectives included: discussing the nature of indigenous knowledge; evaluating the types of indigenous knowledge practices in South Africa’s KwaZulu-Natal province; discussing the types of ICT tools currently used in the management of indigenous knowledge; discussing problems encountered in the availability and use of ICT tools in managing IK; and discussing strategies for improving the use of ICT tools in the management of indigenous knowledge. The theoretical basis of the study was informed by the Knowledge Creation theory (KC) by Nonaka as discussed in detail in chapter two. The study adopted a post-positivist research paradigm to enable multiple perspectives from participants/target population rather than a single reality. Both quantitative and qualitative research approaches were simultaneously used during a single phase of data collection. Quantitative data was gathered by survey method involving self-administered questionnaires with ICT users/beneficiaries. The qualitative data was gathered by both survey and qualitative content analysis largely through open-ended questions, which were embedded in the semi-structured interviews with owners or custodians of IK. In depth literature review and document analysis formed part of qualitative content analysis. The sample for the study was drawn from ICT users/beneficiaries and owners or custodians of indigenous knowledge in the province of KwaZulu-Natal. Notably, the ICT users/beneficiaries consisted of researchers, information specialists and/or librarians, academic staff, students and/or trainees on IK, cultural officers, IK recorders, IK documentation centre managers, and journalists and artisans. Furthermore, respondents who were owners or custodians of IK consisted of traditional healers, diviners and herbalists, traditional farmers, traditional musicians, rural artisans, community elders, traditional midwifery, rainmakers, chiefs, and traditional food specialists and storytellers. The study employed probability and non-probability sampling where cluster, snowball and purposive sampling techniques were used at different stages to select the respondents. A total of 96 questionnaires were administered to ICT users/beneficiaries and 57 (59%) were returned. Additionally, interviews were conducted with the owners or custodians of IK. 224 owners or custodians of IK were sampled, however, 196 (88%) were interviewed. The quantitative data from the ICT users/beneficiaries was analyzed using Statistical Package for the Social Science (SPSS). The qualitative data from owners or custodians of IK was analyzed through the use of qualitative contents analysis. The study acknowledged the wealth, access and use of indigenous knowledge in the province and showed that indigenous knowledge is not only used by indigenous people, as it is also being used by professional people for their own benefit. Many categories of traditional roles of custodians of IK have brought about the sustainability of indigenous knowledge practices in KwaZulu-Natal as it is still vital in these modern times and highly relevant in the areas of medicine and agriculture. Although KwaZulu-Natal has proven to possess rich indigenous knowledge practices, the knowledge is not sufficiently recorded with relevant ICTs for future use. There is a growing use of multiple ICT tools by institutions, IK centres and individuals to record or capture, store and disseminate indigenous knowledge which is quite positive. It is observed that ICT users/beneficiaries and owners or custodians of IK require ICT literacy to improve access and use. The challenges facing IK access are not uniform between ICT users/beneficiaries and owners or custodians of IK. The most crucial challenges among ICT users/beneficiaries and owners or custodians of IK was related to access to relevant ICT infrastructure and resources and lack of digital skills. The existing IK policy should be revised to accommodate rapidly changing ICT requirements of the sector. This study contributes to current literature and discourses on IKS; interrogates the applicability of knowledge creation theory and models to IK research; adds fresh data, information, and knowledge on IK research, particularly in South Africa; and proposes practical solutions to ICT application for IK development. The full thesis is available in the University of Zululand Institutional Repository and other publications from the thesis.
8

Issues in communication during architecture design in modern software engineering : A Systematic Literature Review

Shevchenko, Bohdan January 2023 (has links)
The purpose of this research is to define which instruments with their characteristics exist to mitigate the communication issues in modern software development as well as the exact issues that emerge during software architecture design with their characteristics and validity. A Systematic Literature Review (SLR) is used as a major method of the research. Also, this thesis presents the vision of an ideal tool as well as an attempt to approbate the findings from the SLR in a small surrogate project of the ‘Battleship’ game while applying usual non-functional requirements from highly-collaborative industry projects. Additionally, we make the emphasis on simplicity and ease of use of the tools as well as the importance of the popularisation and promotion of both found and future tools to facilitate verification and adoption in the industry. The most popular Agile approaches (Scrum, Kanban, Extreme Programming, DevOps) do not specify, how these aspects of planning and documentation have to be managed and there are no existing additional widely-used and accepted tools for this purpose. In this work, a significant amount of attention is paid to the verification of the found tools in practice with feedback. For the tools which are not verified in practice, this work does a comparison against the vision of an ideal tool to understand. This helps to understand whether the given tool can be quickly adopted in practice, if further research is continued, or whether certain changes are required. Unfortunately, this work cannot present any existing tools which conform to our vision and are popularised, heavily verified in practice or relatively widely used in the industry. The closest solutions found were introduced in two industry papers concentrating on repurposing the existing Agile practices to mitigate the planning and documentation issues. During an SLR, a few tools were found, which we believe can be relatively easily taken to verification in practice or promoted to be used in industry on an everyday basis. However, we admit that further research of the found tools, which do not satisfy our requirements, can be used to reevaluate them in future to check for the desired properties again. Furthermore, we define a roadmap for future research for both the search for a tool and the development of a new instrument.
9

Learning by Doing: Knowledge Sharing through Design Pedagogy and Decision Support Systems

Black, Kenneth Allan 27 March 2017 (has links)
This study into the architectural profession reviews developed decision support frameworks (graphics to inform and improve decision making through access to more information) as knowledge sharing devices. These developed frameworks first, influence decision makers: the students and their decisions in their personal architectural design process and second, develop a framework on vegetated assemblies (building assemblies that incorporate plants such as green roofs and walls) as vegetated assemblies relate to color theory and its implications in design methodology. This decision support framework assists students in their design process in studio and studio-like educational environments. The purpose of this decision support framework is to influence the students in using vegetated assemblies in their future design inquiry. After implementation, the purpose was to determine the worth of the framework as a mechanism for knowledge sharing. Both purposes were reviewed in developing the framework using immersive case studies, classes both in traditional studios and studio-like courses, website development and member feedback. The evidence of the resulting improvement of decision making or design work was found through the use of surveys, student reflective writing, and personal interpretation of student works and my own immersive design studies, classes, and development of the framework and its website. The surveys and reflective writing were collected from multiple years of involvement in traditional studio and studio-like classes to refine the framework and its use. The results of the study suggest that students do have a larger body of knowledge to make decisions about utilizing vegetated assemblies than before the use of the framework and go on the continue using vegetated assemblies in design work. The framework presents the various factors that impact decisions into vegetated assemblies and develop future designs. By influencing and improving knowledge of such factors on the design of vegetated assemblies early in a student's education, improves decision making in future designs and later professional work. Future work would be targeted at refining the framework and potential courses to include other topics of interest in relation to vegetated assemblies. Finally, the framework could be adapted into a more codified, interactive tool in the future. / Ph. D. / This study looks at how graphics and representation can improve the making of decisions on the basis of access to more information across different learning environments. This process of gathering and then sharing information with others can develop into knowledge sharing devices. These devices also known as decision support structures are a scaffold or framework for influencing decision makers: the students. The influence is on their developed design process, how students go about designing, and on their knowledge of vegetated assemblies, which are parts of buildings that incorporate plants such as green roofs and walls, and color theory, which is a method for using color in design. This decision support structures assists students in their design process in studio and studio-like educational environments. The purpose of this dissertation is to review how decision support structures can be used various learning environments to assist students in exploring lines of inquiry. These lines of inquiry are a deliberate process of exploring an idea or family of ideas. This use of the decision support structure was reviewed using immersive case studies, classes both in traditional studios and studio-like courses, and the development of a website. The results of the study suggest that students do have a larger body of knowledge to make decisions when using the developed decision support structure. This work presents the various factors that impact decisions into developing future designs based on vegetated assemblies and color theory as topics. This work also improves decision making in future designs and later professional work. Future work would be targeted at refining the developed decision support structure and potential courses to include other topics of interest in relation to vegetated assemblies. Finally, the framework could be adapted and expanded in the future.
10

Information Technology Management Strategies to Implement Knowledge Management Systems

McGee, Mary Jane 01 January 2017 (has links)
More than 38% of the U.S. public workforce will likely retire by 2030, which may result in a labor shortage. Business leaders may adopt strategies to mitigate knowledge loss within their organizations by capturing knowledge in a knowledge management system (KMS). The purpose of this single case study was to explore strategies that information technology (IT) managers use to develop and implement a KMS. The target population consisted of IT managers in a small-sized organization located in northwestern Florida who had implemented a KMS successfully. The conceptual framework for this study was organizational knowledge creation theory. The collection of public documents, execution of semistructured interviews with 5 qualified participants, literature on the topic, and member checking formed the determination of the findings of the study. Using triangulation and coding the data for emergent themes, 6 themes emerged from the data analysis: (a) training, (b) customer focus, (c) policy and governance, (d) leadership and management support, (e) communication and marketing, and (f) business process management. The application of the findings may contribute to social change by identifying strategies that leaders and IT managers from communities and government agencies use in implementing a KMS that may facilitate transparency and open flow of information to citizens, and allow access to timely, civic, and potentially life-enhancing information.

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