Reliability is an important issue across industry. This is due to a number of drivers such as the requirement of high safety levels within industries such as aviation, the need for mission success with military equipment, or to avoid monetary losses (due to unplanned outage) within the process and many other industries. The application of fault detection and identification helps to identify the presence of faults to improve mission success or increase up-time of plant equipment. Implementation of such systems can take the form of pattern recognition, statistical and geometric classifiers, soft computing methods or complex model based methods. This study deals with the latter, and focuses on a specific type of model, the Kalman filter. The Kalman filter is an observer which estimates the states of a system, i.e. the physical variables, based upon its current state and knowledge of its inputs. This relies upon the creation of a mathematical model of the system in order to predict the outputs of the system at any given time. Feedback from the plant corrects minor deviation between the system and the Kalman filter model. Comparison between this prediction of outputs and the real output provides the indication of the presence of a fault. On systems with several inputs and outputs banks of these filters can used in order to detect and isolate the various faults that occur in the process and its sensors and actuators. The thesis examines the application of the diagnostic techniques to a laboratory scale aircraft fuel system test-rig. The first stage of the research project required the development of a mathematical model of the fuel rig. Test data acquired by experiment is used to validate the system model against the fuel rig. This nonlinear model is then simplified to create several linear state space models of the fuel rig. These linear models are then used to develop the Kalman filter Fault Detection and Identification (FDI) system by application of appropriate tuning of the Kalman filter gains and careful choice of residual thresholds to determine fault condition boundaries and logic to identify the location of the fault. Additional performance enhancements are also achieved by implementation of statistical evaluation of the residual signal produced and by automatic threshold calculation. The results demonstrate the positive capture of a fault condition and identification of its location in an aircraft fuel system test-rig. The types of fault captured are hard faults such sensor malfunction and actuator failure which provide great deviation of the residual signals and softer faults such as performance degradation and fluid leaks in the tanks and pipes. Faults of a smaller magnitude are captured very well albeit within a larger time range. The performance of the Fault Diagnosis and Identification was further improved by the implementation of statistically evaluating the residual signal and by the development of automatic threshold determination. Identification of the location of the fault is managed by the use of mapping the possible fault permutations and the Kalman filter behaviour, this providing full discrimination between any faults present. Overall the Kalman filter based FDI developed provided positive results in capturing and identifying a system fault on the test-rig.

The enviromental footprint on the planet is something that societies andorganizations all over the world are trying to reduce. The forestry sector is not anexception in that matter and work is going on in several areas, among them reductionof soil damages. At the same, competition is constantly pressing the economicalmarginal, increasing the importance of cost-efficiency.This study’s aim was to compare two different methods of forest operations, theSCA-method SED (reducing the risk of damages) with traditional.The study was carried out as a quantative method study by comparing theproductivity of the two methods with three logging teams from autumns 2017 and2018.This study showed that SED only marginally increased the harvesting team’sproductivity compared to traditional cutting.Logging technique, Gentle efficient logging technique, SED, Strengthening actions,ghost row.

The thesis is an exploration into the Jewish memorial sites erected in the Soviet Zone of Occupation (SBZ) and German Democratic Republic (GDR) between the years 1945 and 1987. The primary aim of the thesis is to provide a collection of Jewish memorial sites in East Germany during the aforementioned time frame. It uses the theories of French historian Pierre Nora as well a number of other authors to legitimize the importance of these memorial sites. In addition, a typology was created by the author to ensure the proper collection of the memorial sites in order to reflect the research question: how was Nazi anti-Semitism remembered in the German Democratic Republic (GDR) through memorial sites between the years 1945-1987? The thesis is, however, more than just a collection of data. It also provides observations about trends and patterns in Jewish memorialization as well uses a method introduced by Ahenk Yilmaz to examine the individual characteristics of the sites. The thesis concludes that Jewish memorialization in the GDR was primarily a bottom-up approach, a fact that has been overlooked by many researchers in the field. Key Words Memorials, East Germany, SED, Memory, Jewish

Eine Untersuchung zum königlichen Ritual des sogenannten Sedfestes im Alten Ägypten anhand der Sedfestreliefs vom Torbau Osorkons II. in Bubastis.

Die Führungsrolle der SED in den Streitkräften der DDR und deren praktische Realisierung - Erläuterung und Kritik.:Vorbemerkung des Autors. I. Die Einzelleitung als spezifische Form der Verwirklichung der führenden Rolle der SED in der NVA. II. Platz und Rolle der Politorgane als leitende Parteiorgane; Ihre Unterscheidung gegenüber den Kreis- und Bezirksleitungen der SED. III. Der Einfluss der Grundorganisationen und Parteigruppen auf alle Seiten des politischen und militärischen Lebens. IV. Der Anteil der SED-Mitglieder am Personalbestand und ihr politisches Wirken. V. Führungsrolle der SED und Parteilichkeit in der wissenschaftlich-theoretischen Arbeit in der NVA Abb.: Strukturschema eines Politorgans. Anmerkungen, Endnoten.

This research explores the potential role of intermediaries in the implementation of socioeconomic development (SED) benefits through the Renewable Energy Independent Power Producer Programme (REIPPPP) in low-income communities. SED benefits are a procurement requirement that forms part of REIPPPP's Economic Development scorecard and are required to be implemented in identified beneficiary communities, with the aim of improving livelihoods in such communities. Literature points to the fact that, community development is not a function of the private sector and that intermediaries can have success in partnering with communities in their quest for development. This research is approached through a qualitative inductive study of a case study. The case study is Project90by2030, a not-for-profit organisation (NPO) and public benefit organisation (PBO) that is focused on the mobilisation of and advocacy for clean energy in energy poor lowincome communities. The research pays attention to the organisation's community development approach and what possible learning benefits there could be for the REIPPPP. Interviews were held with community participants and facilitators of the Community Partnership Programme of the organisation. The research finds that low-income communities experience exclusion and inequality and identifies the agents of the said exclusion and inequality. This thesis argues that intermediaries can play an important role to bridge inequality of agency and other power dynamics that work to the detriment of the empowerment of low-income communities. It concludes that socio-economic community development is a contribution to society that business should pursue, with the support of intermediaries and with local government as a key strategic partner.

There has been a recent trend towards increasing accountability of mental health care providers through the use of treatment outcome measures, in order to reduce spending and improve patient care. This qualitative study utilized focus groups to elicit input regarding the need and possible content involved in creating an improved outcome measure specifically designed for severe emotionally disturbed (SED) children and adolescents. We conducted 60-90 minute focus groups with each of the following three separate constituent groups who are regularly involved in the care of SED youth at the Utah State Hospital (USH), including a) hospital clinical staff, b) affiliated education staff, and c) parents/primary caregivers; as well as clinical staff at a community mental health youth outpatient clinic, the Wasatch Mental Health (WMH) Youth Outpatient Program. While the groups agreed that a new unified system of tracking outcomes could be beneficial as an aid in improving outcomes, their greater concern is about a lack of communication between disciplines and between levels of care. Six broad domains were divided between two sections of Internal versus External Locus of Control (Internal: Behavior, Social/Emotional, Academic/Cognitive, and Strength-Based Assessment; External: Collaboration among Care Providers and Family) and 23 subdomains were generated based on themes identified from the focus groups' responses. We also compared these domains and subdomains to ones previously generated by a USH pilot study and found some overarching similarities, but also some notable differences and both should be considered in any future outcome measure created. However, the most prevalent theme we found was a desire for an increase in collaboration and communication between constituencies and throughout levels of care, which is vitally important to improve care and long-term outcomes of SED youth.

It is required that there is a factual basis for termination when an employer terminates an employee. Provoked dismissals occur if an employer acts contrary to good practice in the labor market or improperly. The dismissal is provoked if it is made by the employee but prompted by the employer. In Swedish law, unprovoked dismissal is not regulated, which means that legal practice has a significant part. A provoked dismissal is considered a dismissal from the employer's side, even though the employee submitted his own resignation. The employer's behavior may be such that the employee submits his own resignation or that the person should have realized that the incident could lead to this. It is not permitted for the employer to act passively in situations where the employee has been exposed. Violence and threats are not acceptable on the part of the employer, but the employee can easily prove that the dismissal is justified. In the form of harassment, the proof becomes significantly more difficult and this is not something an employee should be subjected to, it can be grounds for a provoked dismissal. Reassignment can also be a factor in a provoked dismissal. If an employer has reassigned an employee to a lower position or worse working hours, the employee can resign and this can then be seen as a provoked dismissal.

Cette thèse porte sur le diagnostic des systèmes à événements discrets modélisés par des Réseaux de Petri labellisés (RdP-L). Les problèmes de diagnostic monolithique et de diagnostic modulaire sont abordés. Des contributions sont proposées pour résoudre les problèmes d'explosion combinatoire et de complexité de calcul. Dans le cadre de l'analyse de la diagnosticabilité monolithique, certaines règles de réduction sont proposées comme un complément pour la plupart des techniques existantes de l'analyse de la diagnosticabilité, qui simplifient le modèle RdP-L tout en préservant sa propriété de diagnosticabilité. Pour un RdP-L sauf et vivant, une nouvelle condition suffisante pour la diagnosticabilité est proposée. Pour un RdR-L borné et non bloquant après l'occurrence d'une faute, l'analyse à-la-volée est améliorée en utilisant la notion d'explications minimales qui permettent de compacter l'espace d'état ; et en utilisant des T-semiflots pour trouver rapidement un cycle indéterminé. Une analyse à-la-volée utilisant Verifier Nets (VN) est proposée pour analyser à la fois les RdP-L bornés et non-bornés, ce qui permet d'obtenir un compromis entre efficacité du calcul et limitation des explosions combinatoires. Dans le cadre de l'analyse de la diagnosticabilité modulaire, une nouvelle approche est proposée pour les RdP-Ls décomposés. Les règles de réduction, qui préservent la propriété de la diagnosticabilité modulaire, sont appliquées pour simplifier le modèle initial. La diagnosticabilité locale est analysée en construisant le VN et le Graphe d'Accessibilité Modifié (MAG) du modèle local. La diagnosticabilité modulaire est vérifiée en construisant la composition parallèle du MAG et des graphes d'accessibilités d'autres modules du système. La complexité de calcul est inférieure à celles des autre approches dans la littérature. D'autre part, l'explosion combinatoire est également réduite en utilisant la technique de ε-réduction / This thesis deals with fault diagnosis of discrete event systems modeled by labeled Petri nets (LPN). The monolithic diagnosability and modular diagnosability issues are addressed. The contributions are proposed to reduce the combinatorial explosion and the computational complexity problems. Regarding monolithic diagnosability analysis, some reduction rules are proposed as a complement for most diagnosability techniques, which simplify the LPN model and preserve the diagnosability property. For a safe and live LPN, a new sufficient condition for diagnosability is proposed. For a bounded LPN that does not deadlock after a fault, the on-the-fly diagnosability analysis is improved by using minimal explanations to compact the state space; and by using T-invariants, to find quickly an indeterminate cycle. An on-the-fly diagnosability analysis using Verifier Nets (VN) is proposed to analyze both bounded and unbounded LPN, which achieves a compromise between computation efficiency and combinatorial explosion limitation. Regarding modular diagnosability analysis, a new approach is proposed for decomposed LPNs model. Reduction rules, that preserve the modular diagnosability property, are applied to simplify the model. The local diagnosability is analyzed by building the VN and the Modified Reachability Graph (MRG) of the local model. The modular diagnosability is verified by building the parallel composition of the MRG and the reachability graphs of other modules of the system. We prove in this study that the computational complexity of our approach is lower than existing approaches of literature. The combinatorial explosion is also reduced by using the ε -reduction technique.

Die SED-Organisation an der Bergakademie Freiberg war in den 1950er Jahren eine Autorität mit Schwierigkeiten. Zum einen suchte sie nach einer optimalen Arbeitsstruktur. Zum anderen fehlten der Partei engagierte Genossen. Diese Schwierigkeiten nutzten Studenten und Wissenschaftler. Sie näherten sich der Partei oder distanzierten sich von ihr – je nachdem, wie sie ihre Ziele am besten verwirklichen konnten.