Fraudulent behaviour by management has become a global problem that cuts across cultural and ideological divides. Therefore, given the high incidence and cost of fraud internationally and locally, as well as the fact that stakeholders, including shareholders, governments and non-governmental organisations, are increasing the pressure on organisations to manage unethical behaviour more effectively, it is astonishing that fraud per se has not attracted more research efforts. Enron, WorldCom and Arthur Andersen, among others, have underscored the fact that the current modes which are governing companies are not sufficient to protect investors and public interests, because it is easy for otherwise honest people to be swept along in a climate of corruption. The aim of this study was to propose a model to predict potential risk of management fraud based on the organisational climate of the organisation. An interpretative framework was used to develop a conceptual model. Analytical induction and Lawshe’s content validity ratio were applied to validate the conceptualised model. The conceptual model assumes that there are certain organisational climate factors (determinants and dimensions) within an organisation which could indicate the direction of climate within the organisation. The determinants are leadership style, managerial values, trustworthiness, and organisational values. The following dimensions were identified: level of individual autonomy, reward system of organisation, degree of open communication between employees and management, perceived individual pressure, and fairness and innovation. The conceptual model further assumes that, although employees’ acceptance and/or tolerance of unethical behaviour might be high, not all managers will engage in fraud, as the various aspects of the fraud diamond also impose a form of constraint on the organisation. The level of individual constraint as imposed by the fraud diamond is moderated by an individual’s gender, tenure, education and age, which form part of an individual’s capability and comprise the acquired traits of an individual. Apart from these biographical traits, the model includes personal traits that will also have an impact on an individual’s capability. The limitations, practical implications and recommendations for future research are also discussed. This study, not only augments fraud literature, but also contributes to industrial/organisational psychology by studying individual deviance from an organisational perspective. / Psychology / D. Phil. (Consulting psychology) : illustrated (some colored)

This work introduces diagnostic methods for land surface model (LSM) evaluation that enable developers to identify structural shortcomings in model parameterizations by evaluating model 'signatures' (characteristic temporal and spatial patterns of behavior) in feature, cost-function, and parameter spaces. The ensemble-based methods allow researchers to draw conclusions about hypotheses and model realism that are independent of parameter choice. I compare the performance and physical realism of three versions of Noah LSM (a benchmark standard version [STD], a dynamic-vegetation enhanced version [DV], and a groundwater-enabled one [GW]) in simulating high-frequency near-surface states and land-to-atmosphere fluxes in-situ and over a catchment at high-resolution in the U.S. Southern Great Plains, a transition zone between humid and arid climates. Only at more humid sites do the more conceptually realistic, hydrologically enhanced LSMs (DV and GW) ameliorate biases in the estimation of root-zone moisture change and evaporative fraction. Although the improved simulations support the hypothesis that groundwater and vegetation processes shape fluxes in transition zones, further assessment of the timing and partitioning of the energy and water cycles indicates improvements to the movement of water within the soil column are needed. Distributed STD and GW underestimate the contribution of baseflow and simulate too-flashy streamflow. This work challenges common practices and assumptions in LSM development and offers researchers more stringent model evaluation methods. I show that, because of equifinality, ad-hoc evaluation using single parameter sets provides insufficient information for choosing among competing parameterizations, for addressing hypotheses under uncertainty, or for guiding model development. Posterior distributions of physically meaningful parameters differ between models and sites, and relationships between parameters themselves change. 'Plug and play' of modules and partial calibration likely introduce error and should be re-examined. Even though LSMs are 'physically based,' model parameters are effective and scale-, site- and model-dependent. Parameters are not functions of soil or vegetation type alone: they likely depend in part on climate and cannot be assumed to be transferable between sites with similar physical characteristics. By helping bridge the gap between the model identification and model development, this research contributes to the continued improvement of our understanding and modeling of environmental processes. / text

Fraudulent behaviour by management has become a global problem that cuts across cultural and ideological divides. Therefore, given the high incidence and cost of fraud internationally and locally, as well as the fact that stakeholders, including shareholders, governments and non-governmental organisations, are increasing the pressure on organisations to manage unethical behaviour more effectively, it is astonishing that fraud per se has not attracted more research efforts. Enron, WorldCom and Arthur Andersen, among others, have underscored the fact that the current modes which are governing companies are not sufficient to protect investors and public interests, because it is easy for otherwise honest people to be swept along in a climate of corruption. The aim of this study was to propose a model to predict potential risk of management fraud based on the organisational climate of the organisation. An interpretative framework was used to develop a conceptual model. Analytical induction and Lawshe’s content validity ratio were applied to validate the conceptualised model. The conceptual model assumes that there are certain organisational climate factors (determinants and dimensions) within an organisation which could indicate the direction of climate within the organisation. The determinants are leadership style, managerial values, trustworthiness, and organisational values. The following dimensions were identified: level of individual autonomy, reward system of organisation, degree of open communication between employees and management, perceived individual pressure, and fairness and innovation. The conceptual model further assumes that, although employees’ acceptance and/or tolerance of unethical behaviour might be high, not all managers will engage in fraud, as the various aspects of the fraud diamond also impose a form of constraint on the organisation. The level of individual constraint as imposed by the fraud diamond is moderated by an individual’s gender, tenure, education and age, which form part of an individual’s capability and comprise the acquired traits of an individual. Apart from these biographical traits, the model includes personal traits that will also have an impact on an individual’s capability. The limitations, practical implications and recommendations for future research are also discussed. This study, not only augments fraud literature, but also contributes to industrial/organisational psychology by studying individual deviance from an organisational perspective. / Psychology / D. Phil. (Consulting psychology)

The South African Military Health Service (SAMHS) Nursing College offers a four-year integrated nursing programme leading to registration as a professional nurse at the South African Nursing Council (SANC). Student nurses assume a dual role when entering the SAMHS to commence with nurse training – that of a soldier and a nurse. Because student nurses have to assume dual roles, hidden aspects of military culture may influence the professional socialisation of student nurses in one way or another. With a view to determining whether the military environment does indeed impose any influence on student nurses’ professional socialisation, this study set out to explore the multifaceted context in which these students find themselves. Given the organisational and locational complexity of the SAMHS Nursing College, its campuses and the three military hospitals in South Africa, the population was narrowed down to an accessible target population comprising nurse educators and student nurses of the SAMHS Nursing College (Main Campus). Included in the two samples were nurse educators at the SAMHS Nursing College who had at least three years’ experience as nurse educators and who were registered with the SANC as nurse educators, and student nurses registered at the SANC for the fouryear Integrated Nursing Programme and who were in their fourth year of training. A qualitative constructivist grounded theory study was conducted based on the researcher’s philosophical assumptions. The researcher made use of focus groups and critical-incident narratives to collect data. In keeping with the constructivist paradigm adopted for this study, Charmaz’s (2014) data-analysis approach was followed. Concepts derived from the qualitative data were used to develop a substantive model to create an awareness of the existence of a hidden curriculum, to guide role players through the impact of the hidden curriculum on students’ professional socialisation and to help them to understand how their contribution could improve the outcome of the professional socialisation process / Health Studies / D. Litt. et Phil. (Health studies)

Digitalization has given rise to new opportunities for small and medium-sized video game development studios. No longer bound by physical products and creative restrains, the de-veloper has been empowered with independency. This qualitative study is aimed to under-stand how a development studio develops their business model and how underlying strate-gy is formulated. Additionally we evaluate the degree of innovativeness of the business model in terms of radical and incremental innovation according to Damanpour (1991). To achieve this we present a comprehensive literature review as to gain a more theoretical un-derstanding of industry mechanics and to be able to comprehend reasoning behind existing business models. We structure the dynamics of the business model by analyzing nine busi-ness model aspects as suggested by Osterwalder, Pigneur and Clark (2010). Following our theoretical framework we gain practical input from four separate case studies. An interpret-ative research method is used to gain better understanding of reasoning and choices made. We interpret our findings following a narrative approach which shows that the digitaliza-tion has preluded a paradigm shift in the sense that development studios have started to adopt activities otherwise performed by key partners. As barriers dissipate small and me-dium-sized development studios try to make sense of the current industry, but struggle in doing so. Having to reinvent themselves we conclude that a focus towards creating thicker customer relationships is considered and the idea of seeing games as a service is acknowl-edged to depict the future of the industry. The conclusions of this study contribute to both academic science and industry practice.

The purpose of this thesis is to uncover and examine the processes that start-up entrepreneurs go through while designing and then developing their business models. This is done with the intent of deciphering the kind of development that might ultimately lead to a unique or innovative business model. This study uses primary qualitative data generated from interviews with founding entrepreneurs and managers who still participate in running the organization. Each of these organizations participates in the men’s retail market. The research design and methodology of this research uses a grounded-theory coding procedure to analyze the data. Three questions guide this research forward and the findings are threefold. First, for these organizations two business model design paths were followed, herein referred to as the path to ‘Alleviate Pain’ and as the path to ‘Adopt and Modify.’ Second, entrepreneurial leaders tended to act as arbiters when developing their business models, mediating between the set of information accrued during operations and three identified factors. Thirdly, new research into whether or not business model innovations are the result of ex-ante insights or ex-post operational learning is presented. And the findings tend to indicate that both ex-ante insights and ex-post learning are important, but their importance is temporally induced. Lastly, a brief discussion is carried out on how this research informs the entrepreneurial business model creation process (see entrepreneurial practicum) and how it adds to the current literature on business models and business model innovation.

<p>This thesis is an article-based (3-paper format) dissertation. In the first article, the research team adapted an input-process-outcome (IPO) model of group-level processes in the classroom, as a theoretical framework, to examine students’ experiences regarding pre-college engineering curricula, classroom environments, and their experiences with the creative process in the two engineering courses offered in a university-based summer enrichment program. Applying provisional and open coding to semi-structured interview data from 16 participants, an Input-Process-Outcome Model of Collaborative Creativity (IPOCC model) was developed. In this study, I grouped our findings under Inputs, Group Processes, Outcomes, and Mediating Factors. The IPOCC model expands the 4P model of creativity to incorporate more collaborative contexts. According to the 4P model, creativity can be viewed from four different perspectives: Person, Process, Product, and Press. The IPOCC model suggests that in K-12 collaborative practice, creativity involves group-level considerations in addition to individual-level components. The IPOCC model offer insights for educators in terms of input components, group processes, and mediating factors that can facilitate learners’ engagement in creative teamwork. Findings of this study indicated that a combination of challenging tasks, open-ended problems, and student teamwork provides a rich environment for learners’ engagement to think creatively.</p> <p>The purpose of the second study was to systematically investigate how novice/K-12 students’ visual representation of design ideas has been operationalized, measured, or assessed in the research literature. In the different phases of screening in this systematic review, inclusion, exclusion, and quality criteria were applied. From an initial sample of 958 articles, 40 studies were included in the final step of the coding process and qualitative synthesis. Applying provisional and open coding, three broad themes, and 23 characteristics were identified that have been used by researchers to conceptualize sketching of ideas, in novice/K-12 design activities: Communicating Ideas, Visual-Spatial Characteristics, and Design Creativity. We propose this Three-pronged Design Sketching (3-pDS) framework to examine K-12 design sketches. </p> In K-12 settings, one major challenge of conducting research on the influence of engineering education programs and curricula involves assessment. There is a need for developing alternative, effective, and reliable assessment measures to evaluate students’ design activities. The third study aimed to address this need by developing the idea-Sketching Early Engineering Design (i-SEED) Scale to assess pre-college learners’ freehand sketches in response to a design task. Applying the Three-pronged Design Sketching (3-pDS) as a theoretical framework, the purpose of this study was to examine evidence of content validity, construct validity, and internal consistency of the i-SEED Scale data. The data collection took place in a residential summer enrichment program for students with gifts and talents at a Midwestern university. Following different stages of scale-development design, a sample of 113 design sketches were scored in this study, and the scores were used to provide evidence of the validity of the data for the i-SEED Scale. The sketches were generated by 120 middle- and high-school students in a collaborative design-oriented course. Exploratory factor analysis results supported a three-factor model for the i-SEED Scale, including Visual-Spatial Characteristics, Design Creativity, and Communicating Ideas.

Role-based modeling has been investigated for over 35 years as a promising paradigm to model complex, dynamic systems. Although current software systems are characterized by increasing complexity and context-dependence, all this research had almost no influence on current software development practice, still being discussed in recent literature. One reason for this is the lack of a coherent, comprehensive, readily applicable notion of roles. Researchers focused either on relational roles or context-dependent roles rather then combining both natures. Currently, there is no role-based modeling language sufficiently incorporating both the relational and context-dependent nature of roles together with the various proposed constraints. Hence, this paper formalizes a full-fledged role-based modeling language supporting both natures. To show its sufficiency and adequacy, a real world example is employed.

Since the year 1977, role modeling has been continuously investigated as promising paradigm to model complex, dynamic systems. However, this research had almost no influence on the design of todays increasingly complex and context-sensitive software systems. The reason for that is twofold. First, most modeling languages focused either on the behavioral, relational or context-dependent nature of roles rather than combining them. Second, there is a lack of tool support for the design, validation, and generation of role-based software systems. In particular, there exists no graphical role modeling editor supporting the three natures as well as the various proposed constraints. To overcome this deficiency, we introduce the Full-fledged Role Modeling Editor (FRaMED), a graphical modeling editor embracing all natures of roles and modeling constraints featuring generators for a formal representation and source code of a rolebased programming language. To show its applicability for the development of role-based software systems, an example from the banking domain is employed.

Anlass der vorliegenden Arbeit war die Suche nach einem geeigneten Sehnendefekt-Modell, das die Untersuchung der Wirkung moderner Therapieansätze unter Standardbedingungen ermöglicht. Die Auswertung der Literatur zeigte, dass eine große Anzahl an Sehnendefekt-Modellen mit sehr unterschiedlichen Fragestellungen sowohl an Großtieren, Kleintieren als auch Labortieren eingesetzt wurde. In der vorliegenden Arbeit wurden bekannte Sehnendefekt-Modelle mit besonderem Augenmerk auf die verwendete Methodik und das damit induzierte Schadmuster untersucht. Die umfassende Literaturauswertung mit präziser pathomorphologischer Charakterisierung der Defekte diente als entscheidende Grundlage für die Entwicklung des eigenen Tiermodells. Beim hier vorgestellten Schafmodell handelt es sich um ein Core Lesion- Modell. Es simuliert die am häufigsten beim Pferd auftretende Sehnenerkrankung und bietet die Möglichkeit der direkten intraläsionalen Injektion eines Therapeutikums. Die Core Lesion stellt ein abgeschlossenes Kompartiment dar, so dass keine Trägermaterialien nötig sind, um ein appliziertes Therapeutikum am Wirkort zu binden. Verschiedene chirurgische Zugänge und Zielsehnen wurden beim Schafmodell untersucht. Als geeignet für ein Core Lesion- Modell erwiesen sich beim Schaf die tiefe Beugesehne distal des Karpalgelenks sowie die oberflächliche Beugesehne im Bereich des Tendo calcaneus communis. Für die Induktion der Läsion wurden in Anlehnung an die von LITTLE und SCHRAMME (2006) bzw. SCHRAMME et al. (2010a) beim Pferd gezeigte Methodik unterschiedliche chirurgische Instrumente verwendet. Dabei wurden der Einsatz einer Knochenmark-Extraktionsnadel sowie verschiedene manuell oder elektrisch betriebene arthroskopische Klingen und Fräsköpfe hinsichtlich ihrer Verwendbarkeit sowie des durch sie verursachten Schadmusters miteinander verglichen. Ein manueller Instrumenteneinsatz führte zu deutlich milderen Schadmustern. Dabei kam es durch die Verwendung des Stiletts einer Knochenmark-Extraktionsnadel in einigen Bereichen zu scharfen Faserdurchtrennungen, in anderen Bereichen wurden die Kollagenfasern nur stumpf auseinander gedehnt. Der Einsatz arthroskopischer Klingen und Fräsköpfe beim Schafmodell ist nur eingeschränkt möglich. Durch die geringe Sehnengröße stehen nur sehr wenige Instrumente mit einem entsprechend kleinen Durchmesser zur Verfügung. Ein Round Burr konnte unter experimentellen Bedingungen eingesetzt werden und führte zu einer hochgradigen Schädigung des kompletten Sehnenquerschnitts. Dabei wurden die Fasern aus ihrer ursprünglichen Orientierung heraus gerissen, zumeist aber nicht vom umgebenden Gewebe abgetrennt. Ein Synovial Resector führte hingegen zu einer scharfen Faserdurchtrennung und dadurch zu einem deutlich abgegrenzten Defektbereich. Weitere Einzelheiten wie die resultierende Einblutung und das Einwandern verschiedener Entzündungszell-Spezies müssen in-vivo untersucht werden, um eine klare Empfehlung für den Einsatz der verschiedenen Instrumente formulieren zu können. Die Auswertung der vorhandenen Sehnendefekt-Modelle sowie die eigenen Ergebnisse führten zu dem Schluss, dass eine Kombination verschiedener Methoden sinnvoll sein könnte. Die Arbeit beschreibt ein sicheres, praktikables Großtiermodell für die Simulation von Core Lesions. Das Modell kann zunächst im Tierversuch eingesetzt werden, um die nach Defektinduktion ablaufenden pathophysiologischen Prozesse zu charakterisieren. Dann steht mit dem Schafmodell ein zeitgemäßes Modell für die Untersuchung verschiedener Therapiekonzepte zur Verfügung, das für die Pferdemedizin eingesetzt werden kann, sich aber auch für Untersuchungen mit humanmedizinischem Hintergrund vielversprechend zeigt. Das Modell stellt damit ein wichtiges Bindeglied zwischen Grundlagenforschung und dem klinischen Einsatz moderner Therapiekonzepte dar.