Systems engineering is widely regarded as a full life cycle discipline and provides methodologies and processes to support the design, development, verification, sustainment, and disposal of systems. While this cradle-to-grave concept is well documented throughout literature, there has been recent and ever-increasing emphasis on evolving and digitally transforming systems engineering methodologies, practices, and tools to a model-based discipline, not only for advancing system development, but perhaps more importantly for extending agility and adaptability through the later stages of system life cycles – through system operations and sustainment. This research adopts principles from the software engineering domain DevOps concept (a collaborative merger of system development and system operations) into a Systems Engineering DevOps Lemniscate life cycle model. This progression on traditional life cycle models lays a foundation for the continuum of model-based systems engineering artifacts during the life of a system and promotes the coexistence and symbiosis of variants throughout. This is done by facilitating a merger of model-based systems engineering processes, tools, and products into a surrogate and common modeling environment in which the operations and sustainment of a system is tied closely to the curation of a descriptive system model. This model-based approach using descriptive system models, traditionally leveraged for system development, is now expanded to include the operational support elements necessary to operate and sustain the system (i.e. executable procedures, command scripts, maintenance manuals, etc. modeled as part of the core system). This evolution on traditional systems engineering implementation, focused on digitally transforming and enhancing system operations and sustainment, capitalizes on the ability of model-based systems engineering to embrace change to improve agility in the later life cycle stages and emphasizes the existence of polymorphic systems engineering (performing a variety of systems engineering roles in simultaneously occurring life cycle stages to increase system agility). A model-based framework for applying the Systems Engineering DevOps life cycle model is introduced as a new Systems Modeling Language profile. A use-case leveraging this “Model-Based System Operations” framework demonstrates how merging operational support elements into a spacecraft system model improves adaptability of support elements in response to faults, failures, and evolving environments during system operations, exemplifying elements of a DevOps approach to cyber-physical system sustainment.

This thesis is an autoethnography exploring the engagement of records management (RM) through the vehicle of a computer mediated communication (CMC) focused co-operative inquiry. CMC is defined as, “communication that takes place between human beings via the instrumentality of computers” (Herring, 1996, p.81). The PhD stance was that with the advent of new technologies, such as CMC, the role and place of RM has been challenged. RM practitioners needed to evaluate their principles and practice in order to discover why RM is not uniformly understood and also why it fails to engage many CMC users and information professionals. The majority of today’s information is generated as the result of unstructured communications (AIIM, 2005 and 2006) that no longer have a fixed reality but exist across fragmented globalised spaces through the Cloud, Web 2.0 and software virtualisation. Organisational boundaries are permanently perforated and the division between public and private spaces are blurred. Traditional RM has evolved in highly structured organisational information environments. Nevertheless, RM could lie at the heart of the processes required for dealing with this splintered data. RM takes a holistic approach to information management, establishing the legislative requirements, technical requirements and the training and support for individuals to communicate effectively, simultaneously transmitting and processing the communications for maximum current and ongoing organisational benefits. However RM is not uniformly understood or practiced. The focus of the thesis was to understand how RM engagement can and should be achieved. The research was conducted by establishing a co-operative inquiry consisting of 82 international co-researchers, from a range of disciplines, investigating the question, ‘How do organisations maximise the information potential of CMC for organisational benefit, taking into account the impact of the individual?” The PhD established a novel approach to co-operative inquiry by separating, managing and merging three groups of co-researchers (UK Records Managers, UK CMC users, international Records Managers and CMC users). I was embedded as a co-researcher within this wider inquiry personally exploring as an autoethnography the relevance of RM to the wider research question, the ability of RM practitioners to advocate for RM and the co-researchers’ responses to the place of RM within this context. The thesis makes several contributions to the research field. It examines how records managers and RM principles and practice engaged through the inquiry, articulating the reasons why users sometimes failed to engage with RM principles and practice, and what assists users to successfully engage with RM. It was found that national perspectives and drivers were more significant as to whether or not individuals engaged with RM concepts than age, gender or professional experience. In addition, users engaged with RM when it was naturally embedded within processes. In addition, as a result of the inquiry’s discussions and actions, the thesis suggests that RM principles and practice need to be refined, for example in regards to the characteristics that define a record. In this respect it concludes that there is rarely likely to be an original archival record surviving through time given the need for migration. The research delivered a novel approach to co-operative inquiry whereby merging groups through time produced new learning at each merger point. The thesis recommends further research to build upon its findings.

Promoting knowledge sharing has long been regarded as a very important aspect of the management of knowledge. However, knowledge sharing has its challenges due to the special nature of knowledge. Based on this, the researcher argues that it is knowledge seeking rather than knowledge sharing that plays a crucial role in knowledge management. However, there is no clear definition for knowledge seeking in existing literature. In the few studies of knowledge seeking research, knowledge has been viewed as a noun and as such knowledge seeking has been seen as no different to information seeking. The aim of this research has been to explore the knowledge seeking process in the workplace in order to conceptualise knowledge seeking by developing a theoretical model. A review of the literature concerning knowledge seeking has been conducted in order to clarify the concept of knowledge seeking. From the interpretivist’s perspective, a qualitative research approach has been taken, in which sense-making theory is employed as a methodological guide. Time-line interviews were carried out with construction engineers in China to collect primary data, and Template analysis was utilized. Based on the literature, this thesis defined knowledge seeking as a learning process, which consists of three major themes: experiential learning, information seeking and problem solving, based on which a preliminary framework was developed. Twenty six engineers were successfully interviewed. The findings from the data confirmed the links between the themes. Further codes were also identified to develop a final template, which evolved to a theoretical model illustrating the knowledge seeking process in the workplace. By promoting knowledge seeking rather than knowledge sharing, this research contributed innovatory insight into existing KM research. The new concept of knowledge seeking and the theoretical model developed thereafter contribute to knowledge by providing a theoretical framework for further research in this area. The specific combination of time-line interviews and template analysis has demonstrated good results in this research. Collecting primary data from China, this research applied Western theories onto engineers within a Chinese context, which has contributed to KM research in China. These contributions will result in many practical implications for KM practices.

Decoherence is a major barrier to the implementation of quantum technologies. Theoretical techniques for understanding decoherence in composite systems have traditionally been focused on systems with distinguishable emission spectra, where measuring the frequency of an emitted photon allows one to determine which process took place. Here the photon contains information about the state of the system. On the other hand, systems with indistinguishable spectra do not necessarily completely reveal information about the state of the system when a photon is emitted. It can be impossible to say for certain which of two nearly degenerate transitions has occurred just by measuring the photon's frequency. It is then possible to preserve information within the system throughout the decay process. In this Thesis we show that indistinguishable spectra can lead to protected coherences within one part of a coupled quantum system, even as another part decays. We develop a zero-temperature exact approach for modelling such systems, and compare it to the microscopically derived Born-Markov master equation. This comparison helps us to understand the range of validity of the Markovian approximation. We use this understanding to extend the master equation approach to finite temperature within the Markovian regime, and we compare its high temperature results to a semiclassical model. We examine the physical conditions required for coherence protection, and remarkably we find that heating the system can improve coherence protection. Similarly, increasing the decay rate of the unprotected part of the coupled system can also enhance the coherence of the protected part. These effects are the results of linewidth broadening and thus greater spectral indistinguishability. The findings in this Thesis are of interest to both those seeking to engineer hybrid quantum systems and those seeking to develop theoretical techniques for dealing with the decoherence of composite quantum systems.

This paper seeks to describe the process by which a database-centric web application was redesigned and rewritten to take advantage of Apache’s Lucene - an open-source information retrieval software library written in the Java programming language. After the implementation of a Lucene-based text index of “semi-structured data”, a college radio station's card catalog application was able to deliver higher-quality search results in significantly less time than it was able to do using just a relational database alone. Additionally, the dramatic improvements in speed and performance even allowed the search results interface to be redesigned and enhanced with an improved pagination system and new features such as faceted search/filtering.

A major problem to be solved in health informatics is high quality, structured and timely data collection. Standard terminologies and uniform domain conceptual models are important steps to alleviate this problem which are also proposed to enable interoperability among systems. With the aim of contributing to the solution of this problem, this study proposes novel features for the Archetypes and multi-level modeling technique in health information and knowledge modeling. The study consists of the development of a research prototype for endoscopic data management, and based on that experience, the extension of Minimal Standard Terminology in Digestive Endoscopy (MST). A major contribution of the study consists of significant extensions to the modeling formalism. The proposed modeling approach may be used in the design and development of health information systems based on archetypes for structured data collection, validation and dynamic user interface creation. The thesis work is aimed to make considerable contribution to the emerging Electronic Health Records (EHR) standards and specifications.

Thesis (Ph. D.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains ix, 144 p. : ill. (some col.), maps (some col.). Includes abstract. Includes bibliographical references.

Thesis (Ph. D.)--University of California, San Diego, 2001. / Vita. Includes bibliographical references (leaves 271-277).

Thesis (M. Phil.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 75-80).

Strategic decision makers typically use a wide range of communication and information media in complex, uncertain and often ambiguous or politically charged organizational contexts. However, little help is available in ensuring that their information behaviour is efficient and effective. This study evaluates the use of information systems (IS) as communication media in strategic decision-making processes (SDMPs), focusing on strategic information processing, and how context affects its performance. The analysed strategic decisions (n = 113) were taken in the time period between 2000 and 2008 in large Western organisations. The aim of this investigation was to look at the link between the use of IS during the decision-making process and the performance of the SDMP, taking into account internal and external contextual factors. Using existing information processing theory and research on the SDMP as a theoretical basis, hypotheses were developed and environmental contingencies and political information behaviour were selected as moderating effects on the relationship of IS use and the performance of strategic decisions. A survey and complementary semi-structured interviews were conducted, which studied particular strategic decisions through quantitative and qualitative methods. Results provide support for a number of the study's hypotheses; however, several interesting findings regarding contextual factors, such as information anarchy and environmental munificence/hostility, do not support the hypotheses. Implications for theory and practice concerning information behaviour and its context are discussed.