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1

A Unified Approach to Multisource Data Analyses

Ravat F., Song J.

Fundamenta Informaticae

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2018

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Vol. 162, nr 4

311--359

EN

Classically, Data Warehouses (DWs) supports business analyses on data coming from the inside of an organization. Nevertheless, Lined Open Data(LOD) might sensibly complete these business analyses by providing complementary perspectives during a decision-making process. In this paper, we propose a conceptual modeling solution, named Unified Cube, which blends together multidimensional data from DWs and LOD datasets without materializing them in a stationary repository. We complete the conceptual modeling with an implementation framework which manages the relations between a Unified Cube and multiple data sources at both schema and instance levels. We also propose an analysis processing process which queries different sources in a transparent way to decision-makers. The practical value of our proposal is illustrated through real-world data and benchmarks.

2

Eksperymentalne oraz numeryczne badania właściwości mechanicznych próbek opony samochodu terenowego – analiza porównawcza

Baranowski P, Małachowski J, Mazurkiewicz Ł, Damaziak K

Mechanik

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2012

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R. 85, nr 7CD

37--44

PL

W pracy opisano poszczególne etapy badań wytrzymałościowych próbek opony samochodu terenowego. Próby jednoosiowego ściskania oraz rozciągania przeprowadzone zostały przy użyciu uniwersalnej maszyny wytrzymałościowej z zastosowaniem szybkiej kamery oraz specjalistycznego oprogramowania do pomiaru odkształceń. Uzyskane krzywe naprężenie-odkształcenie posłużyły do wyznaczenia stałych dla hipersprężystego modelu materiału opisanego konstytutywnym równaniem Mooney’a – Rivlina. W kolejnym etapie badań przeprowadzono numeryczne testy odzwierciedlające próby wykonane w warunkach eksperymentalnych, które pozwoliły zweryfikować poprawność użytych danych materiałowych oraz porównać wyniki z badaniami wytrzymałościowymi.

EN

Presented paper shows subsequent stages of off-road vehicle tire coupons mechanical characteristics experimental assessment. Uniaxial compression and tension tests were carried out on the universal strength machine with the assistance of high-speed camera and special software for strains measurements. Obtained stress-strain curves were applied into the FE model of rubber coupon in order to estimate material constants for Mooney-Rivlin constitutive equation defining the material of the tire. In next stage numerical analyses of compression and tension tests were performed, which allowed to validate implemented material characteristics and compare results with experimental ones.

3

Assessment of risks introduced to safety critical software by agile practices - a software engineer's perspective

Górski J., Łukasiewicz K.

Computer Science

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2012

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Vol. 13 (4)

165-182

EN

In this article we investigate the problem of applying agile practices into safetycritical projects. The goal of our research is to investigate potential benefits from introducing agile practices into safety-critical environment and to present a solution providing for balancing agile approach with more disciplined assurance techniques, bringing the best of the two worlds together. In this article we present the supporting ideas such as assurance argument patterns along with a case study. The case study investigates how software engineers perceive risks associated with the introduction of agile practices and collect their ideas on how these risks could be mitigated.