Elastic hadron scattering and optical theorem

All contemporary phenomenological models of elastic hadronic scattering have been based in principle on the assumption of optical theorem validity that has been overtaken from optics. It will be shown that the given theorem which has not been actually proved in particle physics cannot be applied to short-ranged strong interactions. The analysis of corresponding collision experiments is to be done under new basic assumptions. The actual progress in description of hadronic collision processes might then exist only if the initial states are specified on the basis of impact parameter values of colliding particles and probability dependence on this parameter is established, without limiting corresponding conclusion by optical theorem validity.Comment: 11 pages, improved text to emphasize invalidity of optical theorem in short-ranged hadronic collisions and the necessity of looking for some new description of elastic hadronic scattering which would not be based on this theore

BORM - Business Object Relation Modeling

BORM is an object-oriented and process-based analysis and design methodology, which has proved to be effective in the development of business systems. The effectiveness gained is largely due to an unified and simple method for presenting necessary aspects of the relevant business model, which can be simulated, verified and validated for subsequent software implementation. The BORM methodology makes extensive use of business process modeling towards the area of software engineering. This paper outlines BORM and presents it on an application example created in Craft.CASE analysis and modeling tool

Store Image Perceptions in International Retailing: an Empirical Comparison of IKEA’s

It has been found that customers in the home market perceive the retailer’s store image more positively than customers in the host market, even though this study has found that the retailer’s store image is generally perceived very positively by customers in both examined markets. In addition, this thesis has found that there is a significant difference in how IKEA’s management and customers perceive its store image. It can also be concluded that IKEA management perceived store image more positively than customers. This thesis suggests several practical implications for international retailers, in addition to supporting the bulk of existing theory in this area as well as somewhat filling identified research gaps not sufficiently addressed by previous research

Clinical predictors of outcome in survivors of out-of-hospital cardiac arrest treated with hypothermia

AbstractBackgroundOut-of-hospital cardiac arrest (OHCA) is a leading cause of death and severe neurological disability. The objective of this study was to identify clinical predictors of early neurological outcome in survivors of OHCA managed according to recent recommendations for OHCA care.MethodsData from survivors of OHCA, admitted to a tertiary cardiac intensive care unit and treated with hypothermia in a 22 months period (n=46, age 60±13 years, 74% males) were retrospectively evaluated. At 1-month follow-up, patients were classified according to the best achieved Glasgow–Pittsburgh cerebral performance categories (CPC 1–5) and factors affecting the outcome were analysed.ResultsAt 1-month follow-up, 23 patients (50%) had favourable outcome (CPC 1–2), while 23 patients (50%) had poor outcome (CPC 3–5), including 19 with in-hospital death (41% of total). Patients with good outcome were younger (55±13 years vs. 66±10 years; P=0.003), had more often myocardial infarction as the cause of arrest (63% vs. 30%; P=0.018) and ventricular fibrillation/tachycardia as an initial rhythm (78% vs. 39%; P=0.007). Both groups differed by lactate level on admission (4.0±4.6 vs. 7.3±4.1mmol/l, P=0.02), after 12h (2.5±1.1 vs. 4.3±3.2mmol/l, P=0.04) and after 24h (1.9±1.2 vs. 3.2±1.9mmol/l, P=0.04). Logistic regression revealed the following independent outcome predictors: age, acute myocardial infarction and admission lactate level.ConclusionFavourable outcome was observed in a half of OHCA survivors. Young age, acute myocardial infarction as underlying aetiology of cardiac arrest, and low lactate level on admission were the best predictors of favourable outcome