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JOERG BURKHARDT,SIEGFRIED SCHWARZ,MARCO K. KOCH 한국원자력학회 2009 Nuclear Engineering and Technology Vol.41 No.9
The activities related to this paper are to investigate the influence of nodalisation on simulating atmospheric stratification in the THAI experiment TH13 (ISP-47) with the German containment code COCOSYS. This article focuses on different nodalisations of the vessel dome, where an atmospheric stratification occurred due to a high helium content. The volume of the dome was divided into several levels that were varied horizontally into different geometries. These geometries differ in the number of zones as well as in the existence of zones that enable the direct rise of an ascending steam plume into the vessel dome. Additionally, the vertical subdivision of the vessel dome was increased to simulate density gradients in a more detailed way. It was pointed out that the proper simulation of atmospheric stratifications and their dissolution depends on both a suitable horizontal as well as vertical nodalisation scheme. Besides, the treatment of fog droplets has an influence if their settlement is not simulated correctly. This report gives an overview of the gained experience and provides nodalisation requirements to simulate atmospheric stratifications and their proper dissolution.
Joerg Koenigstorfer,Felix Wemmer 글로벌지식마케팅경영학회 2022 Journal of Global Sport Management Vol.7 No.4
The goal of this study is to investigate the relative importance of several predictors of nonprofit sports clubs’ success in recruiting new, and keeping existing, members from the perspective of club managers. Using a random forest analysis known from machine learning, the study takes into account relevant predictors of successful member recruitment and retention. Data were collected via a survey with managers from 284 German sports clubs. The results reveal that service quality and trust are the two most important predictors for recruiting and retaining members. Furthermore, innovation activity, among others, has positive effects on recruiting and retaining members. It also provides suggestive evidence for adverse effects of coopetition—that is, the collaboration with competitors—because high-level (vs. medium-level) collaboration with the clubs’ competitors had a negative impact on recruiting and retaining members. The study derives several implications for the customer relationship management in nonprofit sports clubs.
Joerg Koenigstorfer,Holger Preuss 글로벌지식마케팅경영학회 2022 Journal of Global Sport Management Vol.7 No.4
The goal of this study is to examine the relationship between perceived values in relation to the Olympic Games and individuals’ attitudes toward, and intended support of hosting the Olympic Games in their home country, depending on the levels of perceived corruption within the International Olympic Committee (IOC). A representative sample from Brazil (n = 1,145) was surveyed in 2015 and gave their pre-event evaluations of hosting the Olympic Games in Rio de Janeiro. The results showed that the value dimension ‘achievement in competition’ (a self-centered value dimension) reduced favorable evaluations, particularly when the IOC was perceived as corrupt. In contrast, ‘appreciation of diversity’ and ‘friendly relations with others’ (two other-centered value dimensions) increased favorable evaluations, independent of the levels of perceived corruption of the IOC. Therefore, perceived corruption within the IOC is an important moderator of the relationship between ‘achievement in competition’ and individuals’ attitudes toward the Olympic Games and their intended support. The findings of the study have important implications for the Olympic Movement and Olympic education programs. It is recommended that stakeholders promote other-centered value perceptions and de-emphasize self-centered value perceptions, as well as lower people’s perception of the IOC as a corrupt institution.
Joerg-Patrick Stübgen 대한신경과학회 2015 Journal of Clinical Neurology Vol.11 No.3
Background and Purpose Abnormalities of the peripheral nervous system occur in 5% of patients with lymphoma. Polyneuropathy has not been described in patients with mantlecell and marginal-zone B-cell lymphomas. Case Report Two elderly patients with indolent non-Hodgkin’s lymphoma developed a progressive sensory polyneuropathy that was associated with serum autoantibodies directed against asialosyl/sialosyl gangliosides and myelin-associated glycoprotein/sulfated glucuronyl paragloboside, respectively, which are peripheral-nerve antigens. Te oligoclonal pattern of these antibodies hinted at a lymphoma-induced immune dysregulation. Te neuropathy stabilized clinically during treatment with intravenous immunoglobulin G. B-cell lymphoma was managed with a “watchful waiting” approach. Conclusions Te concept of antigen-specifc, immune-mediated neuropathy associated with slow-growing lymphoma of mature B-cells may be underrecognized. Te principle of treating the illness underlying neuropathy may not be always indicated or necessary if risk-beneft and cost-beneft analyses are taken into account.
Joerg D Moritz,Beata Hoffmann,Dirk Sehr,Katrin Keil,Juliane Eggerking,Godo Groth,Amke Caliebe,Jens Dischinger,Martin Heller,Hendrik Bolte 대한영상의학회 2012 Korean Journal of Radiology Vol.13 No.2
Objective: The aim of this prospective study was to evaluate the performance of ultra-low dose CT for the diagnosis of pediatric-like fractures and ascertain the lowest dose level sufficient for diagnostics. Materials and Methods: Fifty-one bones of young pig cadavers were artificially fractured and subsequently examined by using a 64 multi-detector CT with 36 various dose levels down to a dose comparable with that of X-rays. Two pediatric radiologists analysed the CT scans according to the presence or absence of a fracture, determination of the fracture type and the displacement as well as the diagnostic certainty. For each dose protocol, a success rate for the correct determination of the above-mentioned CT analyses was calculated. A success rate of at least 95% was considered sufficient for diagnostics. Results: All but the lowest dose levels were sufficient to identify the fracture. Only the two lowest dose levels were insufficient to detect the fracture type. All dose levels were adequate for the identification of the displacement. The lowest dose level sufficient for diagnostics was 120 kVp, 11 mAs, and pitch 1.5, with a CTDIvol of 10% of a standard dose and an effective dose three times as large as that of X-rays. Conclusion: Ultra-low dose CT provides the feasibility of a significant dose reduction, still allowing sufficient diagnostics of pediatric-like fractures. Objective: The aim of this prospective study was to evaluate the performance of ultra-low dose CT for the diagnosis of pediatric-like fractures and ascertain the lowest dose level sufficient for diagnostics. Materials and Methods: Fifty-one bones of young pig cadavers were artificially fractured and subsequently examined by using a 64 multi-detector CT with 36 various dose levels down to a dose comparable with that of X-rays. Two pediatric radiologists analysed the CT scans according to the presence or absence of a fracture, determination of the fracture type and the displacement as well as the diagnostic certainty. For each dose protocol, a success rate for the correct determination of the above-mentioned CT analyses was calculated. A success rate of at least 95% was considered sufficient for diagnostics. Results: All but the lowest dose levels were sufficient to identify the fracture. Only the two lowest dose levels were insufficient to detect the fracture type. All dose levels were adequate for the identification of the displacement. The lowest dose level sufficient for diagnostics was 120 kVp, 11 mAs, and pitch 1.5, with a CTDIvol of 10% of a standard dose and an effective dose three times as large as that of X-rays. Conclusion: Ultra-low dose CT provides the feasibility of a significant dose reduction, still allowing sufficient diagnostics of pediatric-like fractures.