Shower development of particles with momenta from 15 GeV to 150 GeV in the CALICE scintillator-tungsten hadronic calorimeter

We present a study of showers initiated by electrons, pions, kaons, and protons with momenta from 15 GeV to 150 GeV in the highly granular CALICE scintillator-tungsten analogue hadronic calorimeter. The data were recorded at the CERN Super Proton Synchrotron in 2011. The analysis includes measurements of the calorimeter response to each particle type as well as measurements of the energy resolution and studies of the longitudinal and radial shower development for selected particles. The results are compared to Geant4 simulations (version 9.6.p02). In the study of the energy resolution we include previously published data with beam momenta from 1 GeV to 10 GeV recorded at the CERN Proton Synchrotron in 2010.Comment: 35 pages, 21 figures, 8 table

Hadron shower decomposition in the highly granular CALICE analogue hadron calorimeter

The spatial development of hadronic showers in the CALICE scintillator-steel analogue hadron calorimeter is studied using test beam data collected at CERN and FNAL for single positive pions and protons with initial momenta in the range from 10 to 80 GeV/c. Both longitudinal and radial development of hadron showers are parametrised with two-component functions. The parametrisation is fit to test beam data and simulations using the QGSP_BERT and FTFP_BERT physics lists from Geant4 version 9.6. The parameters extracted from data and simulated samples are compared for the two types of hadrons. The response to pions and the ratio of the non-electromagnetic to the electromagnetic calorimeter response, h/e, are estimated using the extrapolation and decomposition of the longitudinal profiles.Comment: 38 pages, 19 figures, 5 tables; author list changed; submitted to JINS

Evaluating the application of service-oriented auditing in the B2G domain: A case study

In international trade, reliability, security and cost effective logistic chain management are very important challenges that can only be met by innovative usages of IT. The Extended Single Window project aims at a drastic reduction of physical inspections of goods in main ports by coordinated planning of government authorities, reliable transport to and from hinterland hubs and administrative cost reduction. Although quite some efficiency gains can be achieved already by improving the data logistics, a higher level of innovation requires a re-engineering of the control processes. Service-Oriented Auditing (SOAu)stands for the integrated application of smart auditing techniques in the framework of a Service-Oriented Architecture. In this article we evaluate the SOAu methodology on a B2G case study. From this study we have identified seven challenges: 1-simplifying declaration procedures 2-alignment of (multiple) inspections 3-data quality 4- increasing inspections efficiency 5-online monitoring 6-electronic data delivery 7-collaborative testing. We examine to what extent SOAu can provide solution directions for each challenge

Suitability of active rules for model transformation

Model transformation promises faster and higher-quality system development processes by automating certain development steps. There are numerous proposals such as QVT and triple graph grammars that are applied in practical design environments. To our surprise, active rule systems have not yet been considered as a platform to execute model transformations. We investigate in this paper the suitability of active rule systems via a case study. An empirical analysis of the complexity is provided as well. It turns out that active rules support the basic functional requirements but some extensions to their execution engine and join order optimization would be needed

Managing Change in Fractal Enterprises and IS architectures from a Viable Systems Perspective

The paper aims to analyze the concept of viability in fractal enterprises and IS architectures from a holistic and viable systems perspective. The methodology is based on the conceptual framework of the Viable Systems Approach (VSA) whereby the monitoring of fractal enterprise viability is put in place thanks to the “abilities” of government to manage the operative structure efficiently and to govern the system strategically. In particular, by means of systems viability monitoring, fractal enterprises are governed in terms of structure (i.e. component and relational consonance) and system (interaction and performance resonance)