Assessment of software architectures Fresa, A.; Nucera, G.; Peciola, E. ...
ACM International Conference Proceeding Series; Vol. 27: Proceedings of the 14th international conference on Software engineering and knowledge engineering; 15-19 July 2002,
07/2002
Conference Proceeding
Producing high quality software is a very hard task. In the last years a big effort has been spent in devising techniques for estimating and/or measuring software properties. This ranges from ...forecasting, in a very early stage, the cost of software production to measuring several subcharacterics in order to assess the internal and external software quality. The role of predicting vs. measuring is gaining an increas ing relevance. As an example, the recently revised ISO 9126 standard 1 introduces the concept of Estimated (Predicted) Product Quality. It is clear that the sooner estimated figures are available, the better is possible to modify some design choices. Among all the aspects involved in software developing, a central role is played by the chosen software architecture. Estimating the quality characteristics of such architecture is a strategic activity that can drive several following design decision. In this paper we report the experience of an architectural assessment performed in Ericsson Lab Italy. The assessment was performed according to the framework presented by Jan Bosch in 2.
The next generation of long-baseline neutrino experiments will be capable of precision measurements of neutrino oscillation parameters, precision neutrino-nucleus scattering, and unprecedented ...sensitivity to physics beyond the Standard Model. Reduced uncertainties in neutrino fluxes are necessary to achieve high precision and sensitivity in these future precise neutrino measurements. New measurements of hadron-nucleus interaction cross sections are needed to reduce uncertainties of neutrino fluxes. We report measurements of the differential cross-section as a function of scattering angle for proton-carbon interactions with a single charged particle in the final state at beam momenta of 20, 30, and 120 GeV/c. These measurements are the result of a beam test for EMPHATIC, a hadron-scattering and hadron-production experiment. The total, elastic and inelastic cross-sections are also extracted from the data and compared to previous measurements. These results can be used in current and future long-baseline neutrino experiments, and demonstrate the feasibility of future measurements by an upgraded EMPHATIC spectrometer.
It is no exaggeration that the quantity and complexity of data still present a formidable challenge to the effective and efficient acquisition of knowledge. On the other hand, results obtained from ...the application of mining techniques are often in a form that is difficult to be understood by humans who are accustomed to perceiving information through the visual channel. Multiple views present a special opportunity that can be leveraged in order to address such challenges and visually support the entire exploration and mining process. This paper acknowledges that special visual opportunity by describing how our visual data mining system, VidaMine, exploits multiple views in supporting the user in the exploration and mining process.
The field of digital libraries has attracted a lot of research during the last years. However no project has specifically taken into account the problem of building a digital library of newspaper ...clippings. It is well known that a great deal of cultural knowledge is stored in the newspapers of yesterday. Since newspapers are not always easily accessible, special clipping archives were created in the 20th century. People interested in newspaper information benefit from these archives because the work of selecting, cutting and indexing articles is done by specialists. In order to maintain their important position in the information market, clipping archives should be able to integrate their special skills (such as professional knowledge and experience in gathering and treating newspaper information) into the new technologies of the information society. The EU-funded LAURIN project will carry out the preliminary work necessary for an efficient and smooth shift from the "analogue" clipping archive to its "digital" successor. In order to effectively, accomplish this hard task, the LAURIN Consortium has gathered a significant number of libraries, which are acting as final users and test sites and are continuously driving the system design and development with requirements, suggestions, testing, and criticisms. This paper presents the LAURIN design methodology, the main user and organizational requirements for a clipping digital library and the overall architecture of the LAURIN system.
The management and retrieval of Web data has received significant attention. Among the various approaches, systems have been proposed whose main goal is to provide a framework to integrate different ...and heterogeneous information sources into a common domain model. The Web-At-A-Glance (WAG) system falls into this category, its key characteristic being that instead of requiring an explicit description of the sources, it attempts to semi-automatically classify the information gathered from various sites based on the conceptual model of the domain of interest. The initial WAG prototype dealt exclusively with "standard" Web pages, which typically are HTML or XML documents and present non- or semi-structured information, and they vary widely in their means of presenting information to the user. We present the extension of the WAG system to deal with form pages. In particular, we describe how the system semiautomatically first extracts a conceptual schema for the form page, and then fills and submits the form in consequence of a user query expressed on the domain conceptual schema.
The challenge for Europe in the field of information and communications technologies applied to health care is that of addressing positively the problem of the widening gap between the expectations ...of the citizens of the type of care that can be made available and the limited resources to provide that care. If the expectations of the population are to be fulfilled, it will be necessary to find innovative ways of delivering health services and to do it more efficiently than has yet been the case. Advanced information and communications technologies will be important tools for Member States to achieve the levels of efficiency required. Based on the results of the Community AIM Exploratory Action, further collaborative work is required at EEC level to create an Integrated Health Information Environment (IHE) allowing essentially for integration, modularity and security.
A hypertabular visualizer of query results Santucci, G.; Tarantino, L.
Proceedings. 1997 IEEE Symposium on Visual Languages (Cat. No.97TB100180),
1997
Conference Proceeding
Odprti dostop
A visual database front-end for handling query result presentation and exploration is presented. The system is based on a formal interaction structure called a hypertable, and can be seamlessly ...integrated with any visual semantic query language adopting a data model that supports the notion of relationship cardinality. We aim at overcoming two kinds of problems in the interaction with tabular displays: (1) application-independent problems, pertaining to the mapping from logical tables to graphical windows, and (2) application-dependent problems, related to the content of tables as query results, such as repetitions of values and contiguity of unrelated data. The first kind of problem is addressed by the interaction structure, while the latter is faced by the navigation paradigm designed for the analysis of the query results.
Among the wide range of digital libraries, an interesting, yet quite neglected, subclass is constituted by those exclusively dealing with newspaper clippings. Compared with book-oriented digital ...libraries, clipping libraries are more difficult to seize, since they are wide and unstructured, and the subjects and content of a clipping are completely heterogeneous. LAURIN is an EU-funded project involving seventeen participants from several countries, including two software companies and a large group of libraries, whose main purpose is to set up a network of digitalized newspaper clipping archives that can be easily accessed through the Internet, for searching and retrieving clippings. The project also provides the libraries with models and methodologies to be used for scanning, digitalizing, storing, indexing, and making accessible newspaper clippings. This paper concentrates on the main architectural features of the LAURIN distributed system, evidentiating the peculiarities deriving from the diverse users and tasks it supports.
The prototype of the DARE system Catarci, Tiziana; Santucci, Giuseppe
International Conference on Management of Data: Proceedings of the 2001 ACM SIGMOD international conference on Management of data : Santa Barbara, California, United States; 21-24 May 2001,
05/2001
Conference Proceeding
Galaxy gas kinematics are sensitive to the physical processes that contribute to a galaxy's evolution. It is expected that external processes will cause more significant kinematic disturbances in the ...outer regions, while internal processes will cause more disturbances for the inner regions. Using a subsample of 47 galaxies (\(0.27<z<0.36\)) from the Middle Ages Galaxy Properties with Integral Field Spectroscopy (MAGPI) survey, we conduct a study into the source of kinematic disturbances by measuring the asymmetry present in the ionised gas line-of-sight velocity maps at the \(0.5R_e\) (inner regions) and \(1.5R_e\) (outer regions) elliptical annuli. By comparing the inner and outer kinematic asymmetries, we aim to better understand what physical processes are driving the asymmetries in galaxies. We find the local environment plays a role in kinematic disturbance, in agreement with other integral field spectroscopy studies of the local universe, with most asymmetric systems being in close proximity to a more massive neighbour. We do not find evidence suggesting that hosting an Active Galactic Nucleus (AGN) contributes to asymmetry within the inner regions, with some caveats due to emission line modelling. In contrast to previous studies, we do not find evidence that processes leading to asymmetry also enhance star formation in MAGPI galaxies. Finally, we find a weak anti-correlation between stellar mass and asymmetry (ie. high stellar mass galaxies are less asymmetric). We conclude by discussing possible sources driving the asymmetry in the ionised gas, such as disturbances being present in the colder gas phase (either molecular or atomic) prior to the gas being ionised, and non-axisymmetric features (e.g., a bar) being present in the galactic disk. Our results highlight the complex interplay between ionised gas kinematic disturbances and physical processes involved in galaxy evolution.
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