Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 203 for “"conceptual models"”.
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Natural Language Interfaces to Conceptual Models
Accessing structured data in the form of ontologies currently requires the use of formal query languages (e.g., SeRQL or SPARQL) which pose significant difficulties for non-expert users. One way to lower the learning overhead and make ontology queries more straightforward is through a Natural Lan- …
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Conceptual models of fluid flow in fractures
This thesis is titled "CONCEPTUAL MODELS OF FLOW IN FRACTURES". This thesis study has two parts. In the first part, some conceptual models of fluid flow in fractures will be developed. These models will be used to analyze fluid flow in the near field region of nuclear waste canisters emplaced in …
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Translating Data Between Xml Schema and 6Nf Conceptual Models
… will explore the concepts of temporal data, 6NF conceptual database models, and their relationship with DW 2.0. Further, we will evaluate the Anchor Model and Data Vault as design methods in which to capture temporal data. Using these methods, we will define a process for translating …
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The Use of Graphic Conceptual Models in Theory-Driven Evaluation
… and previous evaluation and research. A graphic conceptual model, often in the form of a logic model or theory of change, is commonly developed to show how an intervention is expected to lead to desired outcomes. While there have been various conceptual, methodological, and theoretical writings …
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Japan's Security Decisions: Allison's Conceptual Models and Missile Defense Policy
… utility of Allison's three policy-making models in analyzing contemporary foreign policy problems. It also explores the effect of cultural considerations on Allison's concepts by delving into the unique themes of Japanese politics. The climate in which this policy decision is made is …
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CONCEPTUAL MODELS FOR DEVELOPMENTAL NEEDS OF ACADEMIC MIDDLE MANAGERS IN HIGHER EDUCATION INSTITUTIONS
… on these notions, the research aim is to create conceptual models for developmental needs of academic MMs in HEIs via a mixed methodology implemented in three phases. The findings of this research through qualitative enquiry identified fifteen factors during semi-structured interviews, six main …
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Use of hydraulic tests to identify conceptual models of heterogeneity for fractured rock aquifers
… work is a Monte Carlo analysis of numerical models of aquifer tests in two-dimensional fractured media, with the objective to identify stochastic models of aquifer heterogeneity that consistently produce stable apparent flow dimensions in agreement with those inferred from aquifer test …
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The relationship of social support, emotional expression, and health status: a LISREL analysis of conceptual models
The present study investigated the relationship between hostility, self concealment, social support, stress, and health. A path model was proposed, evaluated, and modified using the linear structural relations (LISREL) method of latent variable path analysis. Subjects were 402 undergraduate …
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An Assessment of Marital Satisfaction in Stepfamilies Toward an Integration of Three Conceptual Models of Relationship Satisfaction
… the contextual, problem-solving, and investment models of relationship satisfaction. A questionnaire developed to assess marital satisfaction in stepfamilies using variables from the three conceptual models with the Kansas Marital Scale as a global measure of assessment was sent to 660 …
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Analysis of the Stakeholder Derived Conceptual Models and Exploration of Lung Cancer Screening Barriers in a Medically Underserved Area
… a community-engaged research approach to develop conceptual models and generate patient-centered research questions. This method has been used to engage community stakeholders of Martinsville, Virginia to develop conceptual models of the factors contributing to lung cancer outcomes. In the first …
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Syn-sedimentary tectonostratigraphic influence and isotopic δ18O and δ13C characterization of the Kimmeridgian Akimpech Formation, Campeche-Chiapas Subbasin (Campeche Sound), offshore Mexico.
… and diagenetic controls. In such reservoirs, conceptual models play an important role in generating understanding and predictive insights. Yet, predictions are only as good as the conceptual models. This work investigates the structural and stratigraphic controls on the deposition and early- …
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Towards a general conceptual model for bibliographic aggregates: Four case studies from our bibliographic standards
… and metadata librarians rely on high-level conceptual standards to inform them regarding what metadata is central to each kind of bibliographic entity's description, including bibliographic aggregates like those mentioned above. However, not all of our high-level conceptual standards agree …
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Exploring the Complex Relationship Between Social Needs and Health
… Most interventions are not guided by theories or conceptual models that specify causal pathways or mechanisms for how unmet social needs impact health. It is also currently unknown how social needs change over time and the timeframe over which social needs impact health outcomes. This dissertation …
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A metabolic lens on phytoplankton physiology
… metabolomics data. Secondly, we constructed two conceptual models describing how metabolism of the raphidophyte Heterosigma akashiwo responds to phosphorus and nitrogen stress. These conceptual models revealed several new stress response mechanisms not previously reported in other phytoplankton. …
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A Metabolic Lens on Phytoplankton Physiology
… metabolomics data. Secondly, we constructed two conceptual models describing how metabolism of the raphidophyte Heterosigma akashiwo responds to phosphorus and nitrogen stress. These conceptual models revealed several new stress response mechanisms not previously reported in other phytoplankton. …
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The effects of alternative grouping methods on employee turnover research in CPA firms
… of the weak results is inadequate grouping. Four conceptual models of turnover are replicated to provide a data base to use to examine the effects of groups. The models are an expectancy model, a role conflict/ambiguity model, an exchange/investment model, and a sociological model. Two …
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Empirical Studies of Novices Learning Programming
… knowledge and new information by teaching via a conceptual model, which serves to explain the new information in familiar terms.<br></br><br></br>In this thesis the difficulties which novices have when learning to program with the help of a conceptual model were investigated. The curricula and …
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The role of trust in relation to how quality in mental health services is perceived : a critical systems thinking approach
… proposals for change.Root definitions and conceptual models were generated by service users and carers for two activity systems identified by them as priorities for attention: Communication and Carer Involvement, and forwarded to service providers for feedback. The issues raised were …
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