From piles to tiles: designing for overview and control in case handling systems

Poor overview and control of workload in electronic case handling systems is a potential health risk factor which affects the users. Case handling systems must therefore be designed to give the users a better overview and maximum control over their workload. In an earlier study, we developed a prototype interface for managing cases, based on the piles metaphor. This paper introduces a second prototype, which is designed to incorporate the findings of an evaluation of the piles metaphor prototype. In this second prototype cases are visualized as “tiles”, reflecting the number and complexity of the cases. This paper also describes some the results of the evaluation of the tiles prototype

Self-energy correction to the hyperfine structure splitting of hydrogenlike atoms

A first testing ground for QED in the combined presence of a strong Coulomb field and a strong magnetic field is provided by the precise measurement of the hyperfine structure splitting of hydrogenlike 209Bi. We present a complete calculation of the one-loop self-energy correction to the first-order hyperfine interaction for various nuclear charges. In the low-Z regime we almost perfectly agree with the Z alpha expansion, but for medium and high Z there is a substantial deviation

Spectroscopy on nanoparticles without light

One of the most important tools in modern science is the analysis of electromagnetic properties via spectroscopy. The various types of spectroscopy can be classified by the underlying type of interactions between energy and material. In this paper we demonstrate a new class of spectroscopy based on Casimir interactions between a solid investigated object and a reference surface embedded in an environmental liquid medium. Our main example is based on the measurement of Hamaker constants upon changing the concentration of an intervening two-component liquid, where we demonstrate a possible reconstruction algorithm to estimate the frequency-dependent dielectric function of the investigated particle

Weighted hardy operators in complementary morrey spaces

We study the weighted p -> q-boundedness of the multidimensional weighted Hardy-type operators H-omega(alpha) and H-omega(alpha) with radial type weight omega = omega(vertical bar x vertical bar), in the generalized complementary Morrey spaces (C) L-(0)(p,psi) (R-n) defined by an almost increasing function psi = psi(r). We prove a theorem which provides conditions, in terms of some integral inequalities imposed on psi and omega, for such a boundedness. These conditions are sufficient in the general case, but we prove that they are also necessary when the function psi and the weight omega are power functions. We also prove that the spaces (C) L-(0)(p,psi) (Omega) over bounded domains Omega are embedded between weighted Lebesgue space L-p with the weight psi and such a space with the weight psi, perturbed by a logarithmic factor. Both the embeddings are sharp.Lulea University of Technolog

Photoionization of helium by attosecond pulses: extraction of spectra from correlated wave functions

We investigate the photoionization spectrum of helium by attosecond XUV pulses both in the spectral region of doubly excited resonances as well as above the double ionization threshold. In order to probe for convergence, we compare three techniques to extract photoelectron spectra from the wavepacket resulting from the integration of the time-dependent Schroedinger equation in a finite-element discrete variable representation basis. These techniques are: projection on products of hydrogenic bound and continuum states, projection onto multi-channel scattering states computed in a B-spline close-coupling basis, and a technique based on exterior complex scaling (ECS) implemented in the same basis used for the time propagation. These methods allow to monitor the population of continuum states in wavepackets created with ultrashort pulses in different regimes. Applications include photo cross sections and anisotropy parameters in the spectral region of doubly excited resonances, time-resolved photoexcitation of autoionizing resonances in an attosecond pump-probe setting, and the energy and angular distribution of correlated wavepackets for two-photon double ionization.Comment: 19 pages, 12 figure

Which regeneration method gives the greatest result at dry and fresh ground, autumn- or spring planting?

Regeneration with scarification and planting is a well known method, but the plants have a tuff period in the beginning. Decease of plants comes from pine weevils, dry weather, browsers, wrong method of scarification and wrong time for the planting. These are some courses why not every planting gets successful. The purpose with this study is to investigate witch time of planting gives the best result, spring or autumn planting and to give a answer of witch factors are the main course of deceases. The goal is to have the study to decide witch time to plant after final felling. The choices of plantings were maid from a period of three years. Spring plantings were from year 2005, 2006 and 2007 and autumn plantings were from 2004, 2005, and 2006.The purpose was to compare differences in deceases at the same spring weather. Autumn plantings 2004 were compared with spring plantings 2005 and so on. An equal distribution aimed at clear cut areas witch have been scarification with harrow and excavator. The clear cut areas should also have low site index. The planting areas were objective surveyed in grids. On every sample plot assessed the number of living, dead and injured plants. In this study the result shows that both autumn and spring plantings have an acceptable regeneration result. Nothing interprets that time of planting have a significant sense for the regeneration result. Conclusions of this study are that both spring planting and at autumn planting give an acceptable regeneration result. A way to reduce deceases and damages from pine beetle can be to let the clear cut areas rest for three years before planting. To reduce damages made from wild can plants be treated by some of the preparations blood flour, PV-wild protection, Cervacol Extra or Cervaroll. In this study shows that scarification with excavator give a stable result compared with scarification with harrow as gave some inferior regeneration results. Ones and again maybe the harrow scarification clear cut areas can rest for three years before planting. That can reduce attacks from pine beetle.Föryngring med markberedning och plantering är en väl beprövad metod. Men plantorna som sätts har en tuff period i början. Avgångar på grund av snytbaggar, torka, uppfrysning, betande djur, markberedningsmetod och plantering vid fel tid under året är orsaker till att inte alla planteringar blir lyckade. Syftet med den här studien är att undersöka vilken planteringstidpunkt, höstplantering eller vårplantering som ger det bästa föryngringsresultatet och ge svar på vilka dom största faktorerna är, som bidrar till bortgångar. Målet är att kunna använda studien som underlag för val av planteringstidpunkt. Valet av höst och vårplanteringar gjordes under en treårsperiod. Vårplanteringarna utfördes år 2005, 2006 och 2007 och höstplanteringarna utfördes år 2004, 2005 och 2006. Avsikten, var att kunna jämföra skillnader i avgångar vid samma ”försommartorka”. Höstplantering 2004 jämfördes mot vårplantering 2005 o.s.v. En jämn fördelning av harvmarkberedda och grävmaskinsmarkberedda hyggen per år och planteringstidpunkt eftersträvades, dessutom skulle det vara problemmarker med lågt Ståndortsindex och torra till friska marker. Trakterna inventerades med objektiv cirkeytetaxering i kvadratförband genom stegning och kompassgång. På provytorna bedömdes antal levande, döda och skadade plantor. I den här studien visar resultatet att både höst och vårplanteringar ger godkänt föryngringsresultat. Det fanns ingen tydlig trend att planteringstidpunkten har någon större betydelse för resultatet. Slutsatsen av den här studien är att både höst och vårplantering ger godkända föryngringsresultat. Ett sätt att minska avgångar och skador som snytbaggen orsakar kan vara att låta hyggena vila i tre år innan plantering. Nu planteras dom ett till två år efter slutavverkning och har betydande skador. För att minska viltskadorna, kan plantorna efterbehandlas med något av preparaten, blodmjöl, PV-viltskydd, Cervacol Extra eller Cervaroll. Grävmaskinsmarkberedning, visade i den här studien att resultatet är stabilt men däremot gav harven en del dåliga föryngringsresultat. Återigen kan kanske ”harvhyggena” vila i tre år för att åtminstone minska skador från snytbaggen

3D Simulations of Intracerebral Hemorrhage Detection Using Broadband Microwave Technology

Early, preferably prehospital, detection of intracranial bleeding after trauma or stroke would dramatically improve the acute care of these large patient groups. In this paper, we use simulated microwave transmission data to investigate the performance of a machine learning classification algorithm based on subspace distances for the detection of intracranial bleeding. A computational model, consisting of realistic human head models of patients with bleeding, as well as healthy subjects, was inserted in an antenna array model. The Finite-Difference Time-Domain (FDTD) method was then used to generate simulated transmission coefficients between all possible combinations of antenna pairs. These transmission data were used both to train and evaluate the performance of the classification algorithm and to investigate its ability to distinguish patients with versus without intracranial bleeding. We studied how classification results were affected by the number of healthy subjects and patients used to train the algorithm, and in particular, we were interested in investigating how many samples were needed in the training dataset to obtain classification results better than chance. Our results indicated that at least 200 subjects, i.e., 100 each of the healthy subjects and bleeding patients, were needed to obtain classification results consistently better than chance (p < 0.05 using Student\u27s t-test). The results also showed that classification results improved with the number of subjects in the training data. With a sample size that approached 1000 subjects, classifications results characterized as area under the receiver operating curve (AUC) approached 1.0, indicating very high sensitivity and specificity

Time-resolved laser spectroscopy on high-lying states in neutral oxygen

Radiative lifetimes have been measured for five triplet states of atomic oxygen. The oxygen atoms were generated by photodissociation of NO2 and the investigated states were populated through a two-step process involving a two-photon excitation to the lowest excited triplet state of even parity, 2p33p 3P, followed by a one-photon excitation to the investigated state. A similar scheme is applicable to the study of excited states in many light atoms

An Industrial Workbench for Test Scenario Identification for Autonomous Driving Software

Testing of autonomous vehicles involves enormous challenges for the automotive industry. The number of real-world driving scenarios is extremely large, and choosing effective test scenarios is essential, as well as combining simulated and real world testing. We present an industrial workbench of tools and workflows to generate efficient and effective test scenarios for active safety and autonomous driving functions. The workbench is based on existing engineering tools, and helps smoothly integrate simulated testing, with real vehicle parameters and software. We aim to validate the workbench with real cases and further refine the input model parameters and distributions