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This paper introduces means for fatigue damage rates estimation using Laplace distributed multiaxial loads. The model is suitable for description of stresses containing transients of random amplitudes and locations. Explicit formulas for computing the expected value of rainflow damage index as a function of excess kurtosis are given for correlated loads. A Laplace model is used to describe variabi
The oxy-fuel combined cycle (OCC) is one of several carbon capture and sequestration (CCS) technologies being developed to reduce CO2 emissions from thermal power plants. The OCC consists of a semi-closed topping Bryton cycle, and a traditional bottoming Rankine cycle. The topping cycle operates with a working medium mixture of mainly CO2 and H2O. This CO2-rich working fluid has significantly diff
Objectives: Promoting accessible housing for all citizens is high on the political agenda. Knowledge is, however, limited regarding housing accessibility problems for people with Parkinson's disease (PD). The objectives were to investigate housing accessibility problems among people with PD at different stages of disease severity and to analyze the potential impact of improved functional ability o
In heterogeneous catalysis the reactions occur on the surface of a catalyst. To understand the reaction pathways, a detailed understanding on an atomic level is critical. However, the gas atmosphere surrounding the surface dictates the interaction between the surface and the gas. At low pressures this is often neglected, but as the community turns to higher pressures it becomes important to consid
BACKGROUND: Primary hyperparathyroidism (pHPT) is associated with a defective regulation of the secretion of parathyroid hormone (PTH). Thus in pHPT, higher than normal calcium concentrations are required to inhibit PTH release. However, it is not known if this defective regulation is normalized by removal of the parathyroid adenoma (i.e., whether the regulation of PTH secretion is normal in the r
Patients with primary hyperparathyroidism are often elderly with cardiovascular disease and in some an operation might be hazardous owing to anaesthetic complications. A technique for operation for primary hyperparathyroidism under local anaesthesia is described. The method uses a unilateral approach. Seventeen consecutive patients operated on under local anaesthesia were compared with a group of
Most organisms that ever lived on Earth lacked skeletons and have therefore escaped preservation in the geological record. This fact makes it hard to accurately trace the evolution of multicellular organisms and the tree of life. However a handful faunas did get exceptionally well-preserved, including their soft-bodied members, just when complex lifeforms diverged 550 million years ago. Geochemica
This paper presents four different tangible interactive prototypes designed to support the continuation of balance rehabilitation at home. The interactive prototypes are designed to provide a more enjoyable and experience when performing balance rehabilitation exercises. Early results from preliminary tests with stroke survivors and rehabilitation professionals are promising. The aim of the design
In this paper we outline the initial stages of a human centered design process aimed at the design of novel technology (tangible interactive objects) for stroke survivors. We found it useful to support standard methods, such as interviews and focus groups, with a video prototype in order to make the concept of tangible interaction, which was novel to our users, more clear. In addition we carried o
In this paper we show how to convert the problem of estimating delay, slope and curvature of a parabolic event into a frequency estimation problem. Two dimensional data (time and offset) is converted into samples on a two-dimensional manifold embedded in a three-dimensional spaced. To conduct frequency estimation on this manifold we design general domain Hankel matrices and make use of a fixed poi
Optical spectroscopy, and in particular laser spectroscopy, has numerous applications in the assessment and probing in ecology, such as agricultural field and flying pest insect monitoring, as well as in the measurement of atmospheric pollutants. An overview of recent work by our group is given.
Programmable Logic Controllers (PLCs) play an important role for integration of hardware and software in industrial robot cells. In this paper we propose a semantic grounding of the Sequential Function Charts (SFC) notation for specification of PLC programs. Our semantic grounding is expressed in the OWL semantic language and forms part of our semantic robot framework, called KIF (Knowledge Integr
This paper treats the trade-off between robustness, load disturbance attenuation, and measurement noise injection for PI and PID control using Lambda, SIMC, and AMIGO tuning. The effects of measurement noise are characterized by SDU, which is a measure of noise activity analogous to the IAE commonly used to characterize performance of load disturbance response. Simple design rules to choose the fi
We establish Lieb–Thirring power bounds on discrete eigenvalues of Jacobi operators for Schatten class complex perturbations of periodic and more generally finite gap almost periodic Jacobi matrices.
The field of three-dimensional multi-modal X-ray nanoimaging relies not only on high-brilliance X-rays but also on high-precision mechanics and position metrology. Currently available state-of-the-art linear and rotary drives can provide 3D position accuracy within tens to hundreds of nm, which is often insufficient for high resolution imaging with nanofocused X-ray beams. Motion errors are especi
While comparative construal (categorization, analogy and metaphorization) has been the subject of considerable research in linguistics, psychology, and cognitive science, comparatively little attention has been given to its role in emotive and sensory knowledge transfer (Thagard & Shelley 2006: 27). This paper proposes an explanatory framework for comparative construal in the form of a three-d
This text presents a virtual reconstruction of an exceptional chimneypiece, made during the very last days of Giovanni Battista Piranesi’s activity in the marble business. After its export to Sweden, the marble double frame (jambs and architraves) from which it was constituted were divided, and reused for two distinct chimneypieces, located in two different Royal residences. The origins of these p
