Universiteit Maastricht

It’s all about that post; opportunities and challenges of sharing information online

Auteur(s): Aguirre Lopez, E.

Jaar: 2015

Bron: : . Prom./coprom.: Ruyter, J.C. de; Wetzels, M.G.M.; Grewal, D.; Mahr, D.F.

Type: Proefschrift

Exercise capacity, muscle strength and fatigue in sarcoidosis

Auteur(s): Marcellis, R.G.J.

Jaar: 2015

Bron: Maastricht: Universitaire Pers Maastricht. Prom./coprom.: Drent, M.; Lenssen, A.F.

Type: Proefschrift

Het einde van de periode

Auteur(s): Bongers, M.

Jaar: 2015

Bron: Maastricht, .

Type: Lezing / inaugurele rede

Searching for the sources of inequality

Auteur(s): Neubourg, C.R.J. de

Jaar: 2015

Bron: , Afscheidscollege van Prof.dr. Chris de Neubourg Professor of Comparative Economic Studies inthe Maastricht University School of Business and Economics.

Type: Lezing / inaugurele rede

Novel inflammatory biomarkers for the early identification of heart failure

Auteur(s): Altara, R.

Jaar: 2015

Bron: : . Prom./coprom.: Struijker Boudier, H.A.J.; Blankesteijn, W.M.

Type: Proefschrift

Renal cell cancer : a molecular-epidemiological approach to unravel new pathways underlying disease etiology and prognosis

Auteur(s): Deckers, I.A.G.

Jaar: 2015

Bron: : . Prom./coprom.: Brandt, P.A. van den; Engeland, extern van; Schouten, L.

Type: Proefschrift

The role of tissue factor pathway inhibitor in arterial and venous thrombosis

Auteur(s): Winckers, K.

Jaar: 2015

Bron: : . Prom./coprom.: Hackeng, T.M.; Cate, H. ten

Type: Proefschrift

What affects authors' and editors' use of reporting guidelines? Findings from an online survey and qualitative interviews

Auteur(s): Fuller, T.; Pearson, M.; Peters, J.C.; Anderson, R.

Jaar: 2015

Bron: PLoS One, 10(4): e0121585.

Type: Artikel

Samenvatting:
Objectives To identify and understand, through data from multiple sources, some of the factors that affect authors' and editors' decisions to use reporting guidelines in the publication of health research. Design Mixed methods study comprising an online survey and semi-structured interviews with a sample of authors (online survey: n = 56; response rate = 32%; semi-structured interviews: n = 5) and journal editors (online survey: n = 43; response rate = 27%; semi-structured interviews: n = 6) involved in publishing health and medical research. Participants were recruited from an earlier study examining the effectiveness of the TREND reporting guideline. Results Four types of factors interacted to affect authors' and editors' likelihood of reporting guideline use; individual (e.g. having multiple reasons for use of reporting guidelines); the professional culture in which people work; environmental (e.g. policies of journals); and, practical (e.g. having time to use reporting guidelines). Having multiple reasons for using reporting guidelines was a particularly salient factor in facilitating reporting guidelines use for both groups of participants. Conclusions Improving the completeness and consistency of reporting of research studies is critical to the integrity and synthesis of health research. The use of reporting guidelines offers one potentially efficient and effective means for achieving this, but decisions to use (or not use) reporting guidelines take many factors into account. These findings could be used to inform future studies that might, for example, test the factors that we have identified within a wider theoretical framework for understanding changes in professional practices. The use of reporting guidelines by senior professionals appears to shape the expectations of what constitutes best practice and can be assimilated into the culture of a field or discipline. Without evidence of effectiveness of reporting guidelines, and sustained, multifaceted efforts to improve reporting, little progress seems likely to be made.

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Design of parallel transmission pulses for simultaneous multislice with explicit control for peak power and local specific absorption rate

Auteur(s): Guerin, B.; Setsompop, K.; Ye, H.H.; Poser, B.A.; Stenger, A.V.; Wald, L.L.

Jaar: 2015

Bron: Magnetic Resonance in Medicine, 73(5), 1946-1953.

Type: Artikel

Samenvatting:
PurposeTo design parallel transmit (pTx) simultaneous multislice (SMS) spokes pulses with explicit control for peak power and local and global specific absorption rate (SAR). MethodsWe design SMS pTx least-squares and magnitude least squares spokes pulses while constraining local SAR using the virtual observation points (VOPs) compression of SAR matrices. We evaluate our approach in simulations of a head (7T) and a body (3T) coil with eight channels arranged in two z-rows. ResultsFor many of our simulations, control of average power by Tikhonov regularization of the SMS pTx spokes pulse design yielded pulses that violated hardware and SAR safety limits. On the other hand, control of peak power alone yielded pulses that violated local SAR limits. Pulses optimized with control of both local SAR and peak power satisfied all constraints and therefore had the best excitation performance under limited power and SAR constraints. These results extend our previous results for single slice pTx excitations but are more pronounced because of the large power demands and SAR of SMS pulses. ConclusionsExplicit control of local SAR and peak power is required to generate optimal SMS pTx excitations satisfying both the system's hardware limits and regulatory safety limits. Magn Reson Med 73:1946-1953, 2015. (c) 2014 Wiley Periodicals, Inc.

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