The impact of maternal control on children’s anxious cognitions, behaviours and affect: an experimental study

Controlling parenting is associated with child anxiety however the direction of effects remains unclear. The present study implemented a Latin-square experimental design to assess the impact of parental control on children’s anxious affect, cognitions and behaviour. A non-clinical sample of 24 mothers of children aged 4-5 years were trained to engage in (a) controlling and (b) autonomy-granting behaviours in interaction with their child during the preparation of a speech. When mothers engaged in controlling parenting behaviours, children made more negative predictions about their performance prior to delivering their speech and reported feeling less happy about the task, and this was moderated by child trait anxiety. In addition, children with higher trait anxiety displayed a significant increase in observed child anxiety in the controlling condition. The pattern of results was maintained when differences in mothers’ levels of negativity and habitual levels of control were accounted for. These findings are consistent with theories that suggest that controlling parenting is a risk factor in the development of childhood anxiety

High velocity structures in, and the X-ray emission from the LBV nebula around Eta Carinae

The Luminous Blue Variable star Eta Carinae is one of the most massive stars known. It underwent a giant eruption in 1843 in which the Homunculus nebula was created. ROSAT and ASCA data indicate the existence of a hard and a soft X-ray component which appear to be spatially distinct: a softer diffuse shell of the nebula around Eta Carinae and a harder point-like source centered on the star Eta Car. Astonishingly the morphology of the X-ray emission is very different from the optical appearance of the nebula. We present a comparative analysis of optical morphology, the kinematics, and the diffuse soft X-ray structure of the nebula around Eta Carinae. Our kinematic analysis of the nebula shows extremely high expansion velocities. We find a strong correlation between the X-ray emission and the knots in the nebula and the largest velocities, i.e. the X-ray morphology of the nebula around Eta Carinae is determined by the interaction between material streaming away from Eta Car and the ambient medium.Comment: 12 pages, 7 figures, A&A in press, same paper with images at full resolution available from http://www.ita.uni-heidelberg.de/~kweis/publications.htm

Competitiveness through R&D internationalization : patent- and interview data based studies on a latecomer in the telecommunications industry

In recent years, we have been observing an increase in knowledge-intensive activities from emerging market latecomer companies in established centers of state-of-the-art knowledge. This new direction of research and development (R&D) internationalization is still an under-researched strategy for latecomers to gain competitive advantage. In order to uncover these mechanisms, this dissertation uses the case of a Chinese latecomer that recently achieved a leading position in the global telecommunications market: Huawei Technologies. The focus of this dissertation is on the mechanisms that enabled the company to obtain strategic assets through R&D internationalization into leading markets. In a mixed-methods approach, quantitative patent data and qualitative interviews are combined to trace the company’s development during its emancipation from a latecomer stage to an industry leader. The results show that Huawei does its most influential R&D at its offshore locations despite the risks and challenges of having core assets abroad. By doing so, the company focuses on greenfield investments instead of acquisitions by hiring experts at offshore locations. This way, Huawei leverages the experts’ embeddedness in the networks of the global telecommunications industry, which helps the company to overcome liabilities of outsidership as well as challenges of legitimacy and become part of the global industry community. Since the company has caught up on technological and organizational knowledge, it now splits its R&D tasks between research in centers of state-of-the-art technologies and development in China, in order to transfer innovative ideas from abroad to its domestic locations. Thus, the company gains output capability by bridging the lack of innovative capability at its domestic R&D location by employing experienced and creative experts at its offshore locations

Catching up by hiring: The case of Huawei

Hiring experts in centers of state-of-the-art technology is an important way in which a multinational enterprise (MNE) can gain competitive advantage, and yet use of this mechanism remains under-researched. This study uses the case of a Chinese MNE that recently achieved a leading position in the telecommunications market: Huawei Technologies. Taking the perspective of Huawei’s offshore hires, I find that greenfield investments contributed to overcoming liabilities of origin and outsidership in the global telecommunications industry. Nevertheless, even now that Huawei has caught up with industry incumbents, its output capabilities remain dependent on the innovation capabilities of its offshore experts

Widely wavelength-selective Al2O3:Er3+ ring laser

Integrated Al2O3:Er3+ channel waveguide ring lasers were realized on thermally oxidized silicon substrates. High pump power coupling into- and low output power coupling from the ring is achieved in a straightforward design. Wavelength\ud selection in the range 1532 to 1557 nm was demonstrated by\ud varying the length of the output coupler from the ring

A model independent determination of the B -> Xs gamma decay rate

The goal of the SIMBA collaboration is to provide a global fit to the available measurements of inclusive B -> X_s gamma and B -> X_u l nu decays. By performing a global fit one is able to simultaneously determine the relevant normalizations, i.e. the total B -> X_s gamma rate and the CKM-matrix element |Vub|, together with the required hadronic parameters, most importantly the b-quark mass and the b-quark distribution function in the B-meson, called the shape function. In this talk, the current status on the model-independent determination of the shape function and |C7^\incl Vtb Vts*|, which parametrizes the total B -> Xs gamma rate, from a global fit to the available B -> X_s gamma measurements from Babar and Belle is presented. In particular, the theoretical uncertainties originating from variations of the different factorization scales are evaluated.Comment: Proceedings of CKM 2012, the 7th International Workshop on the CKM Unitarity Triangle, University of Cincinnati, USA, 28 September - 2 October 201

Towards a global fit to extract the B->Xs gamma decay rate and Vub

The total B->Xs gamma decay rate and the CKM-matrix element Vub play an important role in finding indirect evidence for new physics affecting the flavor sector of the Standard Model, complementary to direct searches at the LHC and Tevatron. Their determination from inclusive B-meson decays requires the precise knowledge of the parton distribution function of the b quark in the B meson, called the shape function. We implement a new model-independent framework for the shape function with reliable uncertainties based on an expansion in a suitable set of basis functions. We present the current status of a global fit to BaBar and Belle data to extract the shape function and the B->Xs gamma decay rate.Comment: 5 pages, 9 figure