5 research outputs found

    Model-driven dual caching For nomadic service-oriented architecture clients

    Get PDF
    Mobile devices have evolved over the years from resource constrained devices that supported only the most basic tasks to powerful handheld computing devices. However, the most significant step in the evolution of mobile devices was the introduction of wireless connectivity which enabled them to host applications that require internet connectivity such as email, web browsers and maybe most importantly smart/rich clients. Being able to host smart clients allows the users of mobile devices to seamlessly access the Information Technology (IT) resources of their organizations. One increasingly popular way of enabling access to IT resources is by using Web Services (WS). This trend has been aided by the rapid availability of WS packages/tools, most notably the efforts of the Apache group and Integrated Development Environment (IDE) vendors. But the widespread use of WS raises questions for users of mobile devices such as laptops or PDAs; how and if they can participate in WS. Unlike their “wired” counterparts (desktop computers and servers) they rely on a wireless network that is characterized by low bandwidth and unreliable connectivity.The aim of this thesis is to enable mobile devices to host Web Services consumers. It introduces a Model-Driven Dual Caching (MDDC) approach to overcome problems arising from temporarily loss of connectivity and fluctuations in bandwidth

    Robuste und kontextbezogene AusfĂŒhrung mobiler AktivitĂ€ten in Prozessumgebungen

    Get PDF
    IT-Trendanalysten sehen das Thema "MobilitĂ€t" als eine wichtige SĂ€ule nachhaltiger IT-Lösungen. Der Trend in Richtung mobiler IT-Anwendungen wird maßgeblich durch Millenials getrieben, d.h. Menschen die mit dem digitalen Zeitalter aufgewachsen sind. Diese erwarten insbesondere auch eine Integration von Smart-MobilgerĂ€ten in bestehende IT-Lösungen. In Bezug auf Prozess-Management-Technologie bedeutet dieser Trend, dass Smart-MobilgerĂ€te in IT-gestĂŒtzte Arbeits- bzw. ProzessablĂ€ufe nahtlos integriert werden können mĂŒssen. Insbesondere sollten sowohl einzelne AktivitĂ€ten (d.h. Prozessschritte) als auch ganze Prozessfragmente (d.h. Ausschnitte eines Prozesses) auf Smart-MobilgerĂ€ten ausfĂŒhrbar sein. Die vorliegende Arbeit adressiert eine solche Integration von Prozess-Management-Technologie und Smart-MobilgerĂ€ten. Konkret wird untersucht, wie ausgewĂ€hlte AktivitĂ€ten eines Prozesses robust und kontextbezogen auf Smart-MobilgerĂ€ten ausgefĂŒhrt werden können und welche weitergehenden Anforderungen sich fĂŒr mobil ausgefĂŒhrte AktivitĂ€ten im Vergleich zur AusfĂŒhrung von AktivitĂ€ten auf stationĂ€ren Systemen ergeben. Da Smart-MobilgerĂ€te beschrĂ€nkte Ressourcen besitzen und das Risiko eines Ausfalls höher als bei stationĂ€ren Systemen ist, erfordern diese Aspekte tiefergehende Untersuchungen. DarĂŒber hinaus erfordert die UnterstĂŒtzung mobiler AktivitĂ€ten eine technische Umgebung, in der Prozesse ausgefĂŒhrt werden (sog. Prozessumgebung). Die Arbeit zeigt, dass die nahtlose Integration von Smart-MobilgerĂ€ten in eine Prozessumgebung einen mobilen Kontext (d.h. Attribute wie z.B. AusfĂŒhrungsort, GerĂ€teeigenschaften und Netzverbindung) erfordert. Auf dessen Basis wird ein umfassendes Rahmenwerk eingefĂŒhrt, mit dem sich mobile AktivitĂ€ten robust und kontextbezogen in einer Prozessumgebung ausfĂŒhren lassen. Das Rahmenwerk fußt auf fĂŒnf technischen SĂ€ulen, deren Konzepte die robuste und kontextbezogene AusfĂŒhrung bewerkstelligen. DarĂŒber hinaus wird gezeigt, wie sich die vorgestellte Lösung in existierende Prozess-Management-Technologie integrieren lĂ€sst. Insgesamt eröffnet eine robuste und kontextbezogene AusfĂŒhrung mobiler AktivitĂ€ten in einer Prozessumgebung neue Perspektiven fĂŒr die Einbindung von Endanwendern in ihre Prozesse

    Modellierung und AusfĂŒhrung von Workflows unter BerĂŒcksichtigung mobiler Kontextinformationen

    Get PDF
    Bestehende GeschĂ€ftsmodellierungssprachen (bzw. deren Erweiterungen) besitzen Zeit-, IdentitĂ€t- und AktivitĂ€ts-bezogene Kontexte bzw. Objekte zur Modellierung von GeschĂ€ftsprozessen. Zur UnterstĂŒtzung eines sogenannten Context Aware Service werden ortsbezogene Kontexte benötigt, damit die Anwendung bzw. der Prozess auf Basis dessen gesteuert werden kann. FĂŒr die Integration von OrtsbezĂŒgen in Workflow-Modelle wird in vorliegender Arbeit ein Konzept auf Basis von OrtseinschrĂ€nkungen entwickelt

    Examining the post-adoptive infusion of mobile technology in a healthcare domain: determinants and outcomes

    Get PDF
    The healthcare industry is beginning to appreciate the benefits which can be obtained from using Mobile Health Systems (MHS) at the point-of-care. As a result, healthcare organisations are investing heavily in mobile health initiatives with the expectation that users will employ the system to enhance performance. Despite widespread endorsement and support for the implementation of MHS, empirical evidence surrounding the benefits of MHS remains to be fully established. For MHS to be truly valuable, it is argued that the technological tool be infused within healthcare practitioners work practices and used to its full potential in post-adoptive scenarios. Yet, there is a paucity of research focusing on the infusion of MHS by healthcare practitioners. In order to address this gap in the literature, the objective of this study is to explore the determinants and outcomes of MHS infusion by healthcare practitioners. This research study adopts a post-positivist theory building approach to MHS infusion. Existing literature is utilised to develop a conceptual model by which the research objective is explored. Employing a mixed-method approach, this conceptual model is first advanced through a case study in the UK whereby propositions established from the literature are refined into testable hypotheses. The final phase of this research study involves the collection of empirical data from a Canadian hospital which supports the refined model and its associated hypotheses. The results from both phases of data collection are employed to develop a model of MHS infusion. The study contributes to IS theory and practice by: (1) developing a model with six determinants (Availability, MHS Self-Efficacy, Time-Criticality, Habit, Technology Trust, and Task Behaviour) and individual performance-related outcomes of MHS infusion (Effectiveness, Efficiency, and Learning), (2) examining undocumented determinants and relationships, (3) identifying prerequisite conditions that both healthcare practitioners and organisations can employ to assist with MHS infusion, (4) developing a taxonomy that provides conceptual refinement of IT infusion, and (5) informing healthcare organisations and vendors as to the performance of MHS in post-adoptive scenarios

    Workflow and Application Adaptations in Mobile Environments

    No full text
    This position paper describes applications that can benefit from integrated mobile computing and workflow management technologies. Such applications empower a mobile workforce to perform coordinated and streamlined work activities in the field or on the road. We discuss characteristics of these applications and workflow management for supporting these applications. We suggest that mobility support not only extends the application domains of workflow management, but also raises more general issues concerning adaptation paradigms for supporting mobile applications. 1. Introduction In a large number of organizations, the daily operation is governed by a set of cooperative business processes in which intensive group-oriented human interactions are involved. A business process is an ordered (or coordinated) set of work activities. Workflow management provides the ability to improve the efficiency of an organization by streamlining and automating coordinated work activities over distribute..
    corecore