1,301 research outputs found
Fuel on the Invention Funnel: Technology Licensing-in, Antecedents and Invention
In this paper, we examine the impact of technology licensing-in on firm invention performance. Studying a sample of 266 licensees and matched non-licensees using a two-part model specification, we find that licensees are more likely to introduce inventions than their non-licensee counterparts. This holds both if we consider invention in general, and invention in the licensed technological class only. We also show that familiarity with the licensed technology and technological specialization drives licensees to pursue a narrow invention strategy primarily focusing on the technological class specified in the license agreement.Licensing-in, Invention, Dynamic Capabilities, Learning Opportunities, Technological familiarity, Technological specialization
Az ipari parkok a terĂŒleti versenykĂ©pessĂ©gben: telephelyek vagy fejlesztĂ©si csomĂłpontok?
The MATLAB/C program take version 3.1 is a program for simulation of X-ray projections from 3D volume data. It is based on an older C version by Muller-Merbach as well as an extended C version by Turbell. The program can simulate 2D X-ray projections from 3D objects. These data can then be input to 3D reconstruction algorithms. Here however, we only demonstrate a couple of 2D reconstruction algorithms, written in MATLAB. Simple MATLAB examples show how to generate the take projections followed by subsequent reconstruction. Compared to the old take version, the C code have been carefully revised. A preliminary, rather untested feature of using a polychromatic X-ray source with different energy levels was already included in the old take version. The current polychromatic feature X-ray is however carefully tested. For example, it has been compared with the results from the program described by Malusek et al. We also demonstrate experiments with a polychromatic X-ray source and a Plexiglass object giving the beam-hardening artefact. Detector sensitivity for different energy levels is not included in take. However, in section~\refsec:realexperiment, we describe a technique to include the detector sensitivity into the energy spectrum. Finally, an experiment with comparison of real and simulated data were performed. The result wasn't completely successful, but we still demonstrate it. Contemporary analytical reconstruction methods for helical cone-beam CT have to be designed to handle the Long Object Problem. Normally, a moderate amount of over-scanning is sufficient for reconstruction of a certain Region-of-interest (ROI). Unfortunately, for iterative methods, it seems that the useful ROI will diminish for every iteration step. The remedies proposed here are twofold. Firstly, we use careful extrapolation and masking of projection data. Secondly, we generate and utilize projection data from incompletely reconstructed volume parts, which is rather counter-intuitive and contradictory to our initial assumptions. The results seem very encouraging. Even voxels close to the boundary in the original ROI are as well enhanced by the iterative loop as the middle part
Coagulation in children with liver disease
About 100 new children in Sweden require care at a tertiary pediatric ward each year for severe liver disease. These children are at risk for both severe gastrointestinal bleeding, which may be life threatening, and intra- or extrahepatic thrombosis. Both pro- and anticoagulant factors are synthesized in the liver and their levels decrease as liver failure progresses. Coagulation factors are thus used as prognostic tests. The balance between pro- and anticoagulant mechanisms, although maintained in liver disease, seems to be instable and can easily tip towards either bleeding or thrombosis. The coagulation system in children undergoes age-specific changes and the etiology and/or pathogenesis of pediatric liver diseases is different than in adults.
The aims of this thesis were to improve the treatment and the analysis of coagulation defects in pediatric liver disease and also to improve the prognostic evaluation in liver disease.
In Study 1 children with liver disease were treated with recombinant FVIIa due to life threatening bleeding or as prophylaxis prior to invasive procedures. In the first group, the bleeding decreased in 50% of the evaluated occasions and a combination of rFVIIa and octreotide in gastrointestinal hemorrhage was advantageous. In the second group, rFVIIa was useful as prophylactic treatment before various diagnostic and therapeutic procedures.
In Study 2 the thrombin generation test was evaluated in children with liver disease, with and without increased bleeding risk. The results were compared to age-matched healthy controls. This assay did not provide additional information compared to routine coagulation tests.
In Study 3 the correlation between bile acids and coagulation factors was investigated. In children with markedly elevated levels of bile acids, i.e. above 200 ÎŒmol/L, the levels of coagulation factors increased with rising levels of bile acids, despite a worse clinical outcome. In an in vitro study, no interference between bile acids and coagulation factor concentrations was detected.
In Study 4 the Owren method for analyzing INR in patients with liver disease was assessed. Plasma samples from adult patients with liver disease were analyzed at eight laboratories. The coefficient of variance between the laboratories was 5.3%, which is low. Additionally, the ISIVKA and ISIliver were determined and the difference between them was below 10%. These results show that the previously reported high interlaboratory variability regarding INR in patients with liver disease does not constitute a problem when Owren-based reagents are used.
Conclusion: rFVIIa is beneficial for selected patients with severe bleeding and as prophylactic treatment. However, with current knowledge regarding coagulation in liver disease, new treatment strategies aiming to maintain the hemostatic balance in critical situations need to be studied. The thrombin generation test did not provide more information than routine tests. A modified method might be more successful. Coagulation factors may be questionable as prognostic markers in patients with highly elevated bile acids. The mechanisms behind the effect of high bile acids on the coagulation system are very important targets of further studies. Finally, Owren-based reagents for measurement of INR in patients with liver disease provide a solution to the problem with high interlaboratory variability seen internationally.
This thesis adds important information regarding several aspects of the coagulation in children with liver disease and highlights directions for future research
DiffSF: Diffusion Models for Scene Flow Estimation
Scene flow estimation is an essential ingredient for a variety of real-world
applications, especially for autonomous agents, such as self-driving cars and
robots. While recent scene flow estimation approaches achieve a reasonable
accuracy, their applicability to real-world systems additionally benefits from
a reliability measure. Aiming at improving accuracy while additionally
providing an estimate for uncertainty, we propose DiffSF that combines
transformer-based scene flow estimation with denoising diffusion models. In the
diffusion process, the ground truth scene flow vector field is gradually
perturbed by adding Gaussian noise. In the reverse process, starting from
randomly sampled Gaussian noise, the scene flow vector field prediction is
recovered by conditioning on a source and a target point cloud. We show that
the diffusion process greatly increases the robustness of predictions compared
to prior approaches resulting in state-of-the-art performance on standard scene
flow estimation benchmarks. Moreover, by sampling multiple times with different
initial states, the denoising process predicts multiple hypotheses, which
enables measuring the output uncertainty, allowing our approach to detect a
majority of the inaccurate predictions. The code is available at
https://github.com/ZhangYushan3/DiffSF
Fuel on the Invention Funnel: Technology Licensing-in, Antecedents and Invention
Technology management has so far largely overlooked that licensing-in may represent learning opportunities for the recipient firm. Attention has primarily been directed towards a more tactic explanation for the decision of firms to in-license external technologies. However, increasing empirical evidence witnesses an inducing effect of licensing-in on the inventive behavior of the single firm which, in turn, feeds its development and growth. The aim of this paper is to explore whether licensing-in in fact acts as a catalyst for inventive activities pursued by licensee firms. We employ a two-part model to investigate the inventiveness of 133 licensees compared to an equally sized matched sample of non-licensees. The study reveals that licensees exhibit elevated invention performances compared to non-licensee counterparts. This holds both when considering invention in general and invention in licensed technological class.. In addition, the paper reveals that familiarity with the licensed technology and technological specialization instigates the licensee to pursue a narrow invention strategy as defined by the technological classes of the licensed patent.Technology management has so far largely overlooked that licensing-in may represent learning opportunities for the recipient firm. Attention has primarily been directed towards a more tactic explanation for the decision of firms to in-license external technologies. However, increasing empirical evidence witnesses an inducing effect of licensing-in on the inventive behavior of the single firm which, in turn, feeds its development and growth. The aim of this paper is to explore whether licensing-in in fact acts as a catalyst for inventive activities pursued by licensee firms. We employ a two-part model to investigate the inventiveness of 133 licensees compared to an equally sized matched sample of non-licensees. The study reveals that licensees exhibit elevated invention performances compared to non-licensee counterparts. This holds both when considering invention in general and invention in licensed technological class.. In addition, the paper reveals that familiarity with the licensed technology and technological specialization instigates the licensee to pursue a narrow invention strategy as defined by the technological classes of the licensed patent.Non-Refereed Working Papers / of national relevance onl
OrientÄlistika. Starp Austrumiem un Rietumiem: kultĆ«ru un reliÄŁiju dialogs pirms totalitÄrÄ reĆŸÄ«ma, totalitÄrÄ reĆŸÄ«ma laikÄ un pÄc totalitÄrÄ reĆŸÄ«ma
Based on papers read at the 1st International Scholarly Conference of the Latvian Society for the Study of Religion, University of Latvia, Riga, October 6-8, 2012.Support for Conference Proceedings by ERAF Project Support for the international cooperation projects and other international cooperation activities in research and technology at the University of Latvia No. 2010/0202/2DP/2.1.1.2.0/10/APIA/VIAA/01
Att vara förÀlder i ett nytt land. Doulors och kulturtolkars erfarenheter frÄn möten med familjer i nordöstra Göteborg
Vi vill i den hÀr rapporten dela med oss av doulors och kulturtolkars beskrivning av vad som pÄverkar hÀlsan hos familjer som de möter i nordöstra Göteborg samt vad de har för förslag till förÀndring och stöttning. Den bygger pÄ resultaten av ett forskningsprojekt kring deras erfarenheter och arbete vid föreningen Tidigt FörÀldrastöd. Fokus i projektet har framför allt varit pÄ vad som inverkar pÄ hÀlsa och vÀlmÄende bland barn och förÀldrar i stort men vi har sÀrskilt intresserat oss för kost och munhÀlsa.
Doulor hjÀlper kvinnor före, under och efter förlossningen medan kulturtolkar stöttar förÀldrar, sÀrskilt nyanlÀnda, i deras förÀldraskap och hjÀlper dem i kontakter med myndigheter. Kulturtolkarna och doulorna ger ocksÄ kurser till förÀldrar och blivande förÀldrar samt stöd och information till personal inom exempelvis hÀlso- och sjukvÄrd, folktandvÄrd och socialtjÀnst. De som medverkat till den hÀr rapporten har alltsÄ unika kunskaper om familjers liv och hÀlsa i Göteborg Nordost.
Rapporten visar att familjernas livsvillkor och osÀkerhet kan leda till att mammorna och papporna fÄr svÄrt att klara sin förÀldraroll. Det kan handla om otrygg miljö, bristande etablering pÄ arbetsmarknaden och att pengar och tid inte rÀcker till. I ett nytt land kan man ocksÄ kÀnna osÀkerhet kring normer och roller samt ha svÄrare att kÀnna tillit. MÄnga kÀnner inte förtroende för myndigheter. Denna rÀdsla kan göra att man undviker att ta hjÀlp och stöd, exempelvis att ta barnen till tandlÀkaren. En del vÄgar inte heller lita pÄ att maten Àr sÀker, vilket kanske hindrar en att köpa den mat som man sjÀlv vill Àta eller servera familjen.
Doulor och kulturtolkar utför viktiga uppgifter som vÀgledare och brobyggare för familjer i ett nytt land och som stöd till myndigheter. MÄnga myndigheter mÄste dock förbÀttra sitt sÀtt att kommunicera samt arbeta för att fÄ ökat förtroende och bÀttre nÄ ut. Intentionen mÄste vara att frÀmja delaktighet och inkludering samt motarbeta segregering.
Doulor och kulturtolkar i Göteborg Nordost Àr mycket engagerade i och stolta över sitt arbete. Den verksamhetsutveckling som de i första hand ser idag Àr att deras samverkan med experter inom olika omrÄden skulle behöva öka. Det kan exempelvis vara ytterligare samarbete med experter inom kost, munhÀlsa, fysisk aktivitet och psykiatri. Arbetssituationen för doulor och kulturtolkar behöver ocksÄ förbÀttras dÄ deras arbete ofta Àr anstrÀngande och psykiskt pÄfrestande av mÄnga olika anledningar
GMSF: Global Matching Scene Flow
We tackle the task of scene flow estimation from point clouds. Given a source
and a target point cloud, the objective is to estimate a translation from each
point in the source point cloud to the target, resulting in a 3D motion vector
field. Previous dominant scene flow estimation methods require complicated
coarse-to-fine or recurrent architectures as a multi-stage refinement. In
contrast, we propose a significantly simpler single-scale one-shot global
matching to address the problem. Our key finding is that reliable feature
similarity between point pairs is essential and sufficient to estimate accurate
scene flow. To this end, we propose to decompose the feature extraction step
via a hybrid local-global-cross transformer architecture which is crucial to
accurate and robust feature representations. Extensive experiments show that
GMSF sets a new state-of-the-art on multiple scene flow estimation benchmarks.
On FlyingThings3D, with the presence of occlusion points, GMSF reduces the
outlier percentage from the previous best performance of 27.4% to 11.7%. On
KITTI Scene Flow, without any fine-tuning, our proposed method shows
state-of-the-art performance
Differences in Metabolite Composition of Aloe barbadensis Mill. Extracts Lead to Differential Effects on Human Blood T Cell Activity In Vitro
Aloe barbadensis Mill. (Aloe) is used for diverse therapeutic properties including immunomodulation. However, owing to the compositionally complex nature of Aloe, bioactive component(s) responsible for its beneficial properties, though thought to be attributed to polysaccharides (acemannan), remain unknown. We therefore aimed to determine the metabolite composition of various commercial Aloe extracts and assess their effects on human blood T cell activity in vitro. Peripheral blood mononuclear cells (PBMC) from healthy donors were stimulated polyclonally in presence or absence of various Aloe extracts. T cell phenotype and proliferation were investigated by flow cytometry. Aloe extracts were analyzed using targeted 1H-NMR spectroscopy for standard phytochemical quality characterization and untargeted gas chromatography mass spectrometry (GC-MS) for metabolite profiling. Aloe extracts differing in their standard phytochemical composition had varying effects on T cell activation, proliferation, apoptosis, and cell-death in vitro, although this was not related to the acemannan content. Furthermore, each Aloe extract had its own distinct metabolite profile, where extracts rich in diverse sugar and sugar-derivatives were associated with reduced T cell activity. Our results demonstrate that all commercial Aloe extracts are unique with distinct metabolite profiles, which lead to differential effects on T cell activity in vitro, independent of the acemannan content
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