2,546 research outputs found

    Semantic discovery and reuse of business process patterns

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    Patterns currently play an important role in modern information systems (IS) development and their use has mainly been restricted to the design and implementation phases of the development lifecycle. Given the increasing significance of business modelling in IS development, patterns have the potential of providing a viable solution for promoting reusability of recurrent generalized models in the very early stages of development. As a statement of research-in-progress this paper focuses on business process patterns and proposes an initial methodological framework for the discovery and reuse of business process patterns within the IS development lifecycle. The framework borrows ideas from the domain engineering literature and proposes the use of semantics to drive both the discovery of patterns as well as their reuse

    10. Interuniversitäres Doktorandenseminar Wirtschaftsinformatik Juli 2009

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    Begonnen im Jahr 2000, ist das Interuniversitäre Wirtschaftsinformatik-Doktorandenseminar mittlerweile zu einer schönen Tradition geworden. Zunächst unter Beteiligung der Universitäten Leipzig und Halle-Wittenberg gestartet. Seit 2003 wird das Seminar zusammen mit der Jenaer Universität durchgeführt, in diesem Jahr sind erstmals auch die Technische Universität Dresden und die TU Bergakademie Freiberg dabei. Ziel der Interuniversitären Doktorandenseminare ist der über die eigenen Institutsgrenzen hinausgehende Gedankenaustausch zu aktuellen, in Promotionsprojekten behandelten Forschungsthemen. Indem der Schwerpunkt der Vorträge auch auf das Forschungsdesign gelegt wird, bietet sich allen Doktoranden die Möglichkeit, bereits in einer frühen Phase ihrer Arbeit wichtige Hinweise und Anregungen aus einem breiten Hörerspektrum zu bekommen. In den vorliegenden Research Papers sind elf Beiträge zum diesjährigen Doktorandenseminar in Jena enthalten. Sie stecken ein weites Feld ab - vom Data Mining und Wissensmanagement über die Unterstützung von Prozessen in Unternehmen bis hin zur RFID-Technologie. Die Wirtschaftsinformatik als typische Bindestrich-Informatik hat den Ruf einer thematischen Breite. Die Dissertationsprojekte aus fünf Universitäten belegen dies eindrucksvoll.

    The effect of liquor licence concentrations in local areas on rates of assault in New South Wales

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    This paper argues that regulatory authorities should be concerned about increases in liquor outlet density. Abstract Aim: To investigate the relationship between liquor licence concentrations and assault rates in Local Government Areas (LGAs) in New South Wales. Method: Police, liquor licensing and socio-demographic data were analysed. Spatial regression analyses were conducted to measure associations between liquor licence concentrations and domestic violence (DV) and non-domestic violence (non-DV) assault rates. Results: The concentration of hotel licences in an LGA, particularly at higher density levels, was strongly predictive of both DV and non-DV assault rates. A similar, but slightly weaker, association was found for the concentration of packaged licences and DV and non-DV assault rates. On-premises concentrations also predicted DV and non-DV assault rates at the LGA level but, unlike hotel concentration effects, in this case there was no evidence of stronger effects at higher density levels. A significant relationship between DV assault rates and the concentration of clubs was also found, but the association between the concentration of clubs and the non-DV assault rate was not as strong. Conclusion: Regulatory authorities should be concerned about increases in liquor outlet density. In particular, increases in the density of hotels above 2 per 1,000 residents are of greater concern than increases in the density of premises with other types of liquor licenc

    ERP implementation methodologies and frameworks: a literature review

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    Enterprise Resource Planning (ERP) implementation is a complex and vibrant process, one that involves a combination of technological and organizational interactions. Often an ERP implementation project is the single largest IT project that an organization has ever launched and requires a mutual fit of system and organization. Also the concept of an ERP implementation supporting business processes across many different departments is not a generic, rigid and uniform concept and depends on variety of factors. As a result, the issues addressing the ERP implementation process have been one of the major concerns in industry. Therefore ERP implementation receives attention from practitioners and scholars and both, business as well as academic literature is abundant and not always very conclusive or coherent. However, research on ERP systems so far has been mainly focused on diffusion, use and impact issues. Less attention has been given to the methods used during the configuration and the implementation of ERP systems, even though they are commonly used in practice, they still remain largely unexplored and undocumented in Information Systems research. So, the academic relevance of this research is the contribution to the existing body of scientific knowledge. An annotated brief literature review is done in order to evaluate the current state of the existing academic literature. The purpose is to present a systematic overview of relevant ERP implementation methodologies and frameworks as a desire for achieving a better taxonomy of ERP implementation methodologies. This paper is useful to researchers who are interested in ERP implementation methodologies and frameworks. Results will serve as an input for a classification of the existing ERP implementation methodologies and frameworks. Also, this paper aims also at the professional ERP community involved in the process of ERP implementation by promoting a better understanding of ERP implementation methodologies and frameworks, its variety and history

    Project apollo. ship-shore communications using radio satellite relay

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    Requirements for antennas, radio and terminal equipment aboard Apollo communication and tracking ships to communicate with land stations by satellite rela

    Adaptive multibeam phased array design for a Spacelab experiment

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    The parametric tradeoff analyses and design for an Adaptive Multibeam Phased Array (AMPA) for a Spacelab experiment are described. This AMPA Experiment System was designed with particular emphasis to maximize channel capacity and minimize implementation and cost impacts for future austere maritime and aeronautical users, operating with a low gain hemispherical coverage antenna element, low effective radiated power, and low antenna gain-to-system noise temperature ratio

    Cloud ConsultingCrowdsourcing-Based Framework for ERP Consulting

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    Information Technology (IT) altered the way of running businesses in all fields. The installation and integration of an Enterprise Resource Planning (ERP) system is a critical process. With the emergence of Web 2.0, many businesses were created or reengineered to gain an advantage from this technology. This offers an enormous network of users with different interests and skills, and support knowledge transfer. Our expectation is that ERP consulting business will be the next to be changed. In this work, a cloud consulting framework will be provided to enhance the services offered based on crowdsourcing. After examining literature on crowdsourcing and ERP consulting, the following research question was stated: “How can cloud consulting employ crowdsourcing to improve ERP consultancy?” Thus, the research objective is to develop a cloud consulting framework for ERP consulting based on crowdsourcing

    Characteristics of pneumococci causing disease in adults in Portugal in a time of private use of pneumococcal conjugate vaccines in children

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    Invasive pneumococcal disease (IPD) and non-invasive pneumococcal pneumonia (NIPP) are important causes of morbidity and mortality worldwide, particularly among young children, the elderly and the immunocompromised. Two types of vaccines are available to prevent pneumococcal disease, but these target a limited number of the 97 pneumococcal serotypes described so far. One type is a strictly polysaccharide-based vaccine, which includes 23 serotypes and is primarily indicated for adults (23-valent pneumococcal polysaccharide vaccine, PPV23, targeting serotypes 1, 2, 3, 4, 5, 6B, 7F, 8, 9N, 9V, 10A, 11A, 12F, 14, 15B, 17F, 18C, 19A, 19F, 20, 22F, 23F and 33F). The other type are pneumococcal conjugate vaccines (PCVs). Three PCVs have been licensed to date: a 7-valent formulation (PCV7), which covers serotypes 4, 6B, 9V, 14, 18C, 19F and 23F; a 10-formulation (PCV10), which includes all serotypes of PCV7, plus serotypes 1, 5 and 7F; and a 13-valent formulation (PCV13), which targets all serotypes of PCV10 and also serotypes 3, 6A and 19A. PCV7 became available in the USA in 2000 and in Europe in 2001. Several studies reported that the use of PCV7 in children was followed by decreases in the incidence of PCV7-type IPD in children. Since PCV7 reduced colonization due to the vaccine serotypes and because children are the main reservoirs of pneumococci in the community, PCV7 serotypes became less transmitted from children to the remaining population, with this resulting in decreases in the incidence of PCV7-type IPD also in non-vaccinated people, including adults (herd protection). However, at the same time, increases in the incidence of IPD due to particular non-PCV7 serotypes occurred in children and adults. In Portugal, PCV7 was used in children between 2001 and 2009, but was not included in the national immunization program. The uptake of PCV7 was initially low (43% in 2004), but increased steadily (75% in 2008). In mid-2009 and early-2010, PCV10 and PCV13, respectively, became available for children, with PCV13 replacing PCV7. PCV10 and PCV13 were given through the private market until June 2015, when PCV13 was included in the national immunization program for children. During the availability of PCV10 and PCV13 outside the national immunization program, PCV13 was the most frequently used PCV. Even though PPV23 and PCV13 are also available for adults, in Portugal, adult pneumococcal vaccination is estimated to be low. The studies presented in this thesis aimed to evaluate the characteristics of pneumococci causing adult IPD and adult NIPP in Portugal in a time of private PCVs use in children in the country. The isolates were collected by an epidemiological surveillance network, in work since 1999, which includes several laboratories throughout the country. All isolates analyzed were collected from adult patients (≥ 18 yrs). For the characterization of adult IPD isolates we determined the serotype and antimicrobial susceptibility of isolates responsible for adult IPD between 2009 and 2014 (n = 2428). The results were compared with previously published data from the same network (1999-2008, n = 2182). Adult IPD isolates were also characterized by Multi Locus Sequence Typing (MLST) and regarding the presence and type of two pilus islands (PI-1 and PI-2). For this characterization, 50% of adult IPD isolates recovered from 2008 to 2011 (n = 871), from each serotype, were randomly chosen. For the characterization of adult NIPP isolates, we determine the serotype and antimicrobial susceptibility of a collection of isolates responsible for adult NIPP between 1999 and 2015 (n = 2735). Previous studies from this epidemiological surveillance network, which analyzed the serotypes of adult IPD isolates recovered between 1999 and 2008, found that in Portugal there was a significant decrease in the proportion of PCV7 serotypes in adult IPD in the post-PCV7 period (from 30.3% in 1999-2003 to 16.4% in 2008, p < 0.001), accompanied by increases in the proportion of specific non-PCV7 serotypes (serotypes 1, 7F and 19A). When analyzing adult IPD data from 2009 to 2014, we found further changes in the serotype distribution of pneumococci causing adult IPD. Comparing adult IPD isolates recovered in 2009-2011 with those recovered in 2012- 2014, a new but small decrease in the representation of PCV7 serotypes in adult IPD was noted (from 19% to 14%, p = 0.003). In what concerns the overall proportion of PCV13 serotypes, it peaked in 2008 (70%) and then started a significant and gradual decline until 2014 (38%, p < 0.001), the last year analyzed. Since PCV10 and PCV13 became available in Portugal only in mid-2009 and early-2010, respectively, the initial decline in the overall proportion of PCV13 serotypes was independent of childhood vaccination. The PCV13 serotypes that decreased the most from 2008 to 2011 were serotypes 1 (from 10.7% in 2009 to 4.1% in 2011, p < 0.001) and 5 (from 2.0% in 2008 to 0% in 2011, p = 0.003). The early decreases of these two serotypes may be associated with long term fluctuations and outbreaks, described elsewhere. Other serotypes, instead, decreased when a herd effect with the use of PCV13 in children was expected. This was the case of serotype 7F (from 8.2% in 2012 to 2.7% in 2014, p < 0.001) and 19A (from 9.7% in 2012 to 5.6% in 2014, p = 0.027). In the post-PCV13 period, there were also significant increases in some of the serotypes not covered by PCV13 (i.e. serotypes 8, 15A, 20 and 22F). In what concerns antimicrobial resistance, and considering current Clinical Laboratory Standards Institute (CLSI) breakpoints, in 2012-2014, o.5% of the isolates were considered penicillin non-susceptible pneumococci (PNSP) and 17% erythromycin resistant pneumococci (ERP). Regarding the characterization of adult IPD isolates by MLST we found high genetic diversity, with 206 different sequence types (STs) detected. The STs represented 80 different clonal complexes (CCs), but the six more frequent CCs accounted for half of the isolates (CC156, CC191, CC180, CC306, CC62 and CC230). Most of the STs detected related to STs described in other countries. We found the changes in serotypes occurring in adult IPD following PCV7 use in children were mostly driven by the expansion of previously circulating clones or to decreases in most of the lineages expressing a given serotype. Concerning the presence and type of PI-1 and PI-2, only a small proportion of isolates was positive for any of the PIs (31.9%). Most of the isolates expressing PCV7 serotypes presented PI-1 (87.9%), while PI-2 positive isolates were mainly found among isolates expressing serotypes 1 and 7F, which are serotypes included in PCV10 and PCV13. In what concerns the characterization of adult NIPP isolates, we found significant declines in the proportion of vaccines serotypes following the use of PCVs in children, although these declines were less marked than those occurring in adult IPD. In adult NIPP, the proportion of PCV7 serotypes declined from 31% in 1999-2003 to 11% in 2011 (p < 0.001), while the overall proportion of PCV13 serotypes declined from 44% in 2010 to 30% in 2015 (p < 0.001). When considering the 2012-2015 period, and according to current CLSI breakpoints, 1% of adult NIPP isolates were PNSP and 21.7% were ERP. Comparison of NIPP serotypes with IPD serotypes identified associations of several serotypes with either disease presentation. The studies presented in this thesis showed that in Portugal in the time of PCVs use in children outside the national immunization program there were several changes in the characteristics of pneumococci causing disease in adults. While some of the changes suggested herd protection with the use of PCVs in children, others were independent. The inclusion of PCV13 in the national immunization program for children in June 2015 may be further reducing the importance of PCV13 serotypes in adult IPD and adult NIPP. However, increases of particular non-PCV13 serotypes in adult IPD are concerning and should be monitored. Continued IPD and NIPP epidemiological surveillance is important due to different serotype distribution and dynamics of pneumococci causing each disease presentation
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