Huld T.,European Commission - Joint Research Center Ispra |
Gottschalg R.,Loughborough University |
Beyer H.G.,Magdeburg Stendal University of Applied Sciences |
Topic M.,University of Ljubljana
Solar Energy | Year: 2010
A method is presented for estimating the energy yield of photovoltaic (PV) modules at arbitrary locations in a large geographical area. The method applies a mathematical model for the energy performance of PV modules as a function of in-plane irradiance and module temperature and combines this with solar irradiation estimates from satellite data and ambient temperature values from ground station measurements. The method is applied to three different PV technologies: crystalline silicon, CuInSe2 and CdTe based thin-film technology in order to map their performance in fixed installations across most of Europe and to identify and quantify regional performance factors. It is found that there is a clear technology dependence of the geographical variation in PV performance. It is also shown that using long-term average values of irradiance and temperature leads to a systematic positive bias in the results of up to 3%. It is suggested to use joint probability density functions of temperature and irradiance to overcome this bias. © 2009 Elsevier Ltd. All rights reserved.
Agency: Cordis | Branch: FP7 | Program: BSG-SME | Phase: SME-1 | Award Amount: 1.50M | Year: 2008
As healthy as it is to keep fit by running, the repetitive stresses and strains on joints cause a large percentage of the injuries experienced during this sport. HEELLESS aims to develop a novel type of running shoe that prevents joint injury and muscle strain by mitigating the impact force that results from impact force when the foot strikes the ground during running; notably the peak force when landing on the heel is smoothed out. Preliminary trials have proven the concept, but methodical research is needed to enable the SME consortium to further improve the shoe. Research of composite materials to be used for the application of a rigid upper sole will set a new precedent for the market of composite materials. The use of a natural fibre reinforced composite for the application of use in specialised athletic footwear is a novel approach with distinct recycleability advantages. Such composites have not yet been embarked upon, making this application highly innovative. The work anticipated is broken down into work packages for research and innovation related to material research, shoe development, biomechanical assessments, evaluations, as well dissemination, technology transfer and exploitation of results. The market for athletic footwear is substantial and grows with 4% per annum, with consumers becoming increasingly aware of safety factors and the prevention of injuries through specialised clothing. The exploitation outlook is great, not only addressing performance runners, but in particular also the fitness market. Multinational players on one hand and threats from cheap alternatives from low-wage countries on the other hand, however, make it a particular challenge for SMEs to tap these market opportunities. To have a chance, a superior performance and other use related properties (like safety, comfort) are a prerequisite, and precisely the expected result of HEELLESS.
Agency: Cordis | Branch: FP7 | Program: MC-IAPP | Phase: FP7-PEOPLE-2011-IAPP | Award Amount: 809.24K | Year: 2011
DiaBSmart project aims to generate, transfer and exchange the clinical, academic and production knowledge between the partners to create a new generation of diabetic footwear through a newly developed patient assessment system.The transfer of knowledge(TOK) between various sectors ensures that the need of patients is considered and transferred effectively to product development using a scientific approach.The objectives include:(1) the design and development of an integrated system of DIABetic foot assessment (2) to validate the newly developed system using experimental methods (3) to develop a suitable material to meet the mechanical and clinical requirements (4) to evaluate the mechanical and clinical effectiveness of material choice in reducing the potential risk of foot complications.The Numerical, Experimental and Mathematical Analyses system will integrate all aspects of diabetic footwear including; clinical and biomechanical assessment, material choice and aesthetic design.Proposed interdisciplinary, intersectorial approach is unique and brings together the expertise from research institutions, industry and clinics. TOK between these sectors will ensure the synergy and efficient use of information in patient assessment, monitoring, product development and customisation in an objective manner.This project while enhancing the knowledge base in diabetic assessment; will have a clear impact on new product development leading to both clinical and economic benefits. The products include a new generation of integrated SMART /multi material midsoles and/or orthoses for diabetic footwear.Properties of the materials will be optimised with a view to minimise/ redistribute the pressure and hence the stress on the soft tissue in the critical plantar areas of the foot.Whilst significantly affecting the course of the disease, the products will aim to reduce the risk of limb loss in patients with diabetes,the most frequent cause of non-traumatic lower-limb amputations.
Gnutzmann S.,University of Nottingham |
Schanz H.,Magdeburg Stendal University of Applied Sciences |
Schanz H.,Max Planck Institute for the Physics of Complex Systems |
Smilansky U.,University of Cardiff |
Smilansky U.,Weizmann Institute of Science
Physical Review Letters | Year: 2013
We report on a hitherto unnoticed type of resonances occurring in scattering from networks (quantum graphs) which are due to the complex connectivity of the graph - its topology. We consider generic open graphs and show that any cycle leads to narrow resonances which do not fit in any of the prominent paradigms for narrow resonances (classical barriers, localization due to disorder, chaotic scattering). We call these resonances " topological" to emphasize their origin in the nontrivial connectivity. Topological resonances have a clear and unique signature which is apparent in the statistics of the resonance parameters (such as, e.g., the width, the delay time, or the wave-function intensity in the graph). We discuss this phenomenon by providing analytical arguments supported by numerical simulation, and identify the features of the above distributions which depend on genuine topological quantities such as the length of the shortest cycle (girth). These signatures cannot be explained using any of the other paradigms for narrow resonances. Finally, we propose an experimental setting where the topological resonances could be demonstrated, and study the stability of the relevant distribution functions to moderate dissipation. © 2013 American Physical Society.
Gall C.,Otto Von Guericke University of Magdeburg |
Franke G.H.,Magdeburg Stendal University of Applied Sciences |
Sabel B.A.,Otto Von Guericke University of Magdeburg
Health and Quality of Life Outcomes | Year: 2010
Background: To evaluate vision-related and health-related quality of life (VRQoL, HRQoL) in first stroke patients with homonymous visual field defects (VFD) with respect to the extent of the lesion. Since VFD occur in approximately 10% of stroke patients the main purpose of the study was to investigate the additional impact of VFD in stroke patients hypothesizing that VFD causes diminished VRQoL.Methods: In 177 first stroke patients with persisting VFD 2.5 years after posterior-parietal lesions VRQoL was assessed by the National-Eye-Institute-Visual-Functioning-Questionnaire (NEI-VFQ) and HRQoL by the Medical-Outcome-Study Short-Form-36 Health-Survey (SF-36). Questionnaire results of VFD-patients were compared with age- and sex-matched healthy controls and with general non-selected stroke samples as published elsewhere. VFD-type and visual acuity were partially correlated with questionnaire results.Results: Compared to healthy controls VFD-patients had lower NEI-VFQ scores except ocular pain (Z-range -11.34 to -3.35) and lower SF-36 scores except emotional role limitations (Z-range -7.21 to -3.34). VFD-patients were less impaired in SF-36 scores than general stroke patients one month post lesion (6/8 subscales) but had lower SF-36 scores compared to stroke patients six months post lesion (5/8 subscales). Visual acuity significantly correlated with NEI-VFQ scores (r-range 0.27 to 0.48) and VFD-type with SF-36 mental subscales (r-range -0.26 to -0.36).Conclusions: VFD-patients showed substantial reductions of VRQoL and HRQoL compared to healthy normals, but better HRQoL compared to stroke patients one month post lesion. VFD-patients (although their lesion age was four times higher) had significantly lower HRQoL than a general stroke population at six months post-stroke. This indicates that the stroke-related subjective level of HRQoL impairment is significantly exacerbated by VFD. While VRQoL was primarily influenced by visual acuity, mental components of HRQoL were influenced by VFD-type with larger VFD being associated with more distress. © 2010 Gall et al; licensee BioMed Central Ltd.
Meyer H.,Otto Von Guericke University of Magdeburg |
Mueller T.,Otto Von Guericke University of Magdeburg |
Goldau G.,Magdeburg Stendal University of Applied Sciences |
Chamaon K.,Otto Von Guericke University of Magdeburg |
And 2 more authors.
Clinical Orthopaedics and Related Research | Year: 2012
Background Metal-on-metal (MoM) THAs have reduced wear rates compared with metal-on-polyethylene. However, elevated serum metal ion levels and pseudotumors have been reported in large MoM articulations. Questions/purposes We therefore determined (1) if corrosion occurred at the cone/taper interface leading to instability in patients with large-diameter THAs; (2) how patients presented clinically and radiographically; (3) if adverse periprosthetic tissue reactions occurred; (4) whether metal was released from the implants into the periprosthetic tissues; and (5) if head size correlated with metal release. Methods We reviewed 114 patients who had revisions of large-diameter head MoM articulations. Mean time of implantation was 46 months. To identify adverse reactions and particle load, tissues were stained by hematoxylin and eosin and CD3/CD20/CD68 antibodies. Periprosthetic tissues were analyzed for metal content and distribution in different regions. Electrochemical reactions between the stem and adapter were investigated by a minicell electrode. Results Electrochemical studies on the stem and the head adapter showed a risk for galvanic corrosion. Ninety-four percent of patients had instability at the cone/taper interface. All patients presented with early clinical symptoms; 59 patients had radiographic signs of loosening. One hundred four patients had foreign body reactions and necrosis. The largest amounts of metal released were titanium or iron. We found no correlation between head size and metal ion release. Conclusions These findings suggest that in modular cone/ taper connections, friction of the MoM articulations may cause failure of the cone/taper interface leading to galvanic corrosion and loosening. It is unclear whether the design of this MoM system provides sufficient stability at the taper. © The Association of Bone and Joint Surgeons® 2012.
Hauck M.,University of Hamburg |
Metzner S.,Magdeburg Stendal University of Applied Sciences |
Rohlffs F.,University of Hamburg |
Lorenz J.,Hamburg University of Applied Sciences |
Engel A.K.,University of Hamburg
Pain | Year: 2013
Modern forms of music therapy are clinically established for various therapeutic or rehabilitative goals, especially in the treatment of chronic pain. However, little is known about the neuronal mechanisms that underlie pain modulation by music. Therefore, we attempted to characterize the effects of music therapy on pain perception by comparing the effects of 2 different therapeutic concepts, referred to as receptive and entrainment methods, on cortical activity recorded by magnetencephalography in combination with laser heat pain. Listening to preferred music within the receptive method yielded a significant reduction of pain ratings associated with a significant power reduction of delta-band activity in the cingulate gyrus, which suggests that participants displaced their focus of attention away from the pain stimulus. On the other hand, listening to self-composed "pain music" and "healing music" within the entrainment method exerted major effects on gamma-band activity in primary and secondary somatosensory cortices. Pain music, in contrast to healing music, increased pain ratings in parallel with an increase in gamma-band activity in somatosensory brain structures. In conclusion, our data suggest that the 2 music therapy approaches operationalized in this study seem to modulate pain perception through at least 2 different mechanisms, involving changes of activity in the delta and gamma bands at different stages of the pain processing system.
Zander M.,Magdeburg Stendal University of Applied Sciences
Bundesgesundheitsblatt - Gesundheitsforschung - Gesundheitsschutz | Year: 2016
The article presents disability studies and elaborates, as their central feature, the distinction between societal disability and impairment which can be described on an individual and medical level. Disability studies define disability as socially caused exclusion. Participation and inclusion, seen as sociopolitical control and counter-terms, do, in fact, have a different content, depending on usage and context. Using the example of the International Classification of Functioning (ICF) and the United Nations Convention on the Rights of Persons with Disabilities (UN CRPD), the respective understanding of disability is depicted. Against this background, the deficits of implementation of the UN CRPD, as criticized by the responsible UN Committee, are shown. Finally, a research agenda for disability studies is outlined, that deals with, among other things, implementation strategies and conflicts of interest in terms of inclusion, furthering widely unquestioned economic conditions and especially the negative impact of European austerity politics. © 2016 Springer-Verlag Berlin Heidelberg
Metzner S.,Magdeburg Stendal University of Applied Sciences
Nordic Journal of Music Therapy | Year: 2010
In psychotherapy with patients suffering from psychosis, the necessity of allowing acting and well-considered co-acting is acknowledged as a means of communication. The use of musical improvisations seems to be particularly appropriate for this, especially for the treatment of very extreme human experiences, such as, for example, feelings of vast emptiness, desertedness, persecution, fusion, dissociation, and unreach-ableness. These feelings are demanding in the therapeutic relationship, yet unavoidable to deal with. By means of a single case study the author analyses the challenges and the chances of musical interactions using psychoanalytical as well as musicological approaches. © 2010 The Grieg Academy Music Therapy Research Centre.
Agency: Cordis | Branch: H2020 | Program: MSCA-RISE | Phase: MSCA-RISE-2015 | Award Amount: 135.00K | Year: 2016
The decline of freshwater fish biodiversity is proceeding at an alarming and persistent rate. Given that most fish must undertake some form of migration in order to complete their life-cycle, of particular concern is the proliferation of hydropower schemes that block migration routes, as well as a variety of other barriers such as weirs and culverts. Several locations in the southern hemisphere are among the major global hotspots of hydropower development. They are also home to some of the least studied fish communities in the world. Mitigation measures for fish passage have traditionally relied on designs developed for strong swimming fishes of the northern hemisphere. These designs are ineffective for generally smaller, relatively weak swimming fish, such as those found in temperate regions of the southern hemisphere, but there is very little understanding of the mechanisms involved. This innovative project represents the first systematic attempt to bring together world-leading practitioners from Europe with biologists, engineers and stakeholders from the southern hemisphere in an effort to exchange knowledge and construct a shared vision for fish passage science and policy. This will be achieved through systematic review, expert consultation, ecological modelling, training programmes, networking and stakeholder engagement using a novel combination of approaches. The outcomes will include: high quality journal publications; a summer school; a set of funding bids based on a co-constructed research strategy; and a model predicting fish passage for species of the southern hemisphere. The projects key performance indicators will include: number of publications on fish passage in the southern hemisphere; uptake of robust methods in fish passage research; corresponding citations; metrics indicating public awareness (online activity, readership of popular publications, number of people reached in public engagement events); and policy citations.