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For initial value problems associated with operator-valued Riccati differential equations posed in the space of Hilbert–Schmidt operators existence of solutions is studied. An existence result known for algebraic Riccati equations is generalized and used to obtain the existence of a solution to the approximation of the problem via a backward Euler scheme. Weak and strong convergence of the sequenc
This thesis addresses the critical issue of design and development of products like production machines for SMEs and rural communities as an essential capability to foster local technology development within the innovation systems of Latin America. What is studied and discussed in this thesis is the pre-requisites for effective application of design and development methods, like design thinking
Non-invasive biological samples benefit studies that investigate rare, elusive, endangered, or dangerous species. Integrating genomic techniques that use non-invasive biological sampling with advances in computational approaches can benefit and inform wildlife conservation and management. Here, we used non-invasive fecal DNA samples to generate low- to medium-coverage genomes (e.g., >90% of the co
Purpose: Tricuspid valve flow velocities are challenging to measure with cardiovascular MR, as the rapidly moving valvular plane prohibits direct flow evaluation, but they are vitally important to diastolic function evaluation. We developed an automated valve-tracking 2D method for measuring flow through the dynamic tricuspid valve. Methods: Nine healthy subjects and 2 patients were imaged. The ap
Background: Patients with a psychotic disorder often suffer from low self-esteem, which has been related to higher suicidal risk, poor quality of life and, the maintenance of psychotic and depression symptoms. However, intervention studies are scarce and reported interventions concern individual therapies provided by highly educated psychologists. Both the individual setting and the required quali
Introduction: Problems with adequately regulating aggression are comon in people with mild to borderline intellectual disabilities (MBID). Learning through experience has been shown to be effective in MBID. Therefore, we adapted an aggression prevention training that uses virtual reality (VR), which was initially made for a forensic psychiatric population. We aimed to assess the feasibility of thi
A 7th order polyphase G/sub -m/C IF filter with automatic frequency tuning, implemented in a 0.35/spl mu/m CMOS process, is presented. The filter has a center frequency of 3MHz and a passband of 1MHz. The image band rejection is higher than 57dB, the stop band attenuation is at least 40dB. The in-band spurious free dynamic range is around 53dB. On-chip automatic frequency tuning provides more than
With increased market competition and advances in modern manufacturing technologies, requirements on customer orders and manufacturing conditions have become more diversified. This paper addresses a dynamic production planning problem for a steel plate fabrication plant with practical flexibility of both customers and manufacturing, such as steel slab-plate matching rules, plate substitution optio
Quality requirements complement functional requirements with information on the target quality levels of software functions or emergent system quality aspects. In release planning the allocation of development effort in further investments into product enhancements, new or enhanced functions are competing with quality improvements for limited resources. When setting balanced quality targets for de
The Sixth Sense of PR-Experts? An Expert-Novice-Comparison of PR-Problem-Solving and Implications for Public Relations-Pedagogy
Whistle-blowing can serve as a powerful mechanism helping policy-makers and other stakeholders recognize ethical misconduct and other types of wrongdoing in autonomous public agencies. This mechanism is of particular importance in major public sector reforms, such as agency mergers, when it may be difficult to secure continuity in the quality of organizational processes. Yet, we know little of wha
Over the past decade scholars in the humanities and social sciences have increasingly been pressed to demonstrate the manner in which their research is “useful” to society while simultaneously, funding for their research has been more tightly tied to bibliometric measurements that prioritize high-brow scholarship geared towards publish results in “leading” international peer-review journals. In ma
This thesis deals with tools for operational improvement of supply chain performance. The work was aimed at providing knowledge for supply chain developers and practitioners, and identifying and developing tools for improved performance in a supply chain. The investigation was part of a project financed by the European Commission called "Industrial Supply Chain Optimizer" (ISCO). The thesis consis
Lattice Boltzmann method (LBM) is an alternative to conventional CFD to capture the detailed activities of the transport processes at microscale. Here LBM is used to model the hydrogen production by splitting water by incident sunlight over water covered Si-nanorods. The purpose of this study is, by a 3D microscale model, to investigate the transport and the formation of the hydrogen bubbles by el
