582 research outputs found

    Universal Mobile Service Execution Framework for Device-To-Device Collaborations

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    There are high demands of effective and high-performance of collaborations between mobile devices in the places where traditional Internet connections are unavailable, unreliable, or significantly overburdened, such as on a battlefield, disaster zones, isolated rural areas, or crowded public venues. To enable collaboration among the devices in opportunistic networks, code offloading and Remote Method Invocation are the two major mechanisms to ensure code portions of applications are successfully transmitted to and executed on the remote platforms. Although these domains are highly enjoyed in research for a decade, the limitations of multi-device connectivity, system error handling or cross platform compatibility prohibit these technologies from being broadly applied in the mobile industry. To address the above problems, we designed and developed UMSEF - an Universal Mobile Service Execution Framework, which is an innovative and radical approach for mobile computing in opportunistic networks. Our solution is built as a component-based mobile middleware architecture that is flexible and adaptive with multiple network topologies, tolerant for network errors and compatible for multiple platforms. We provided an effective algorithm to estimate the resource availability of a device for higher performance and energy consumption and a novel platform for mobile remote method invocation based on declarative annotations over multi-group device networks. The experiments in reality exposes our approach not only achieve the better performance and energy consumption, but can be extended to large-scaled ubiquitous or IoT systems

    Operating an Advertising Programmatic Buying Platform: A Case Study

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    This paper analyses how new technological developments and the possibilities generated by the internet are shaping the online advertising market. More specifically it focuses on a programmatic advertising case study. The origin of the problem is how publishers resort to automated buying and selling when trying to shift unsold inventory. To carry out our case study, we will use a programmatic online advertising sales platform, which identifies the optimal way of promoting a given product. The platform executes, evaluates, manages and optimizes display advertising campaigns, all in real-time. The empirical analysis carried out in the case study reveals that the platform and its exclusion algorithms are suitable mechanisms for analysing the performance and efficiency of the various segments that might be used to promote products. Thanks to Big Data tools and artificial intelligence the platform performs automatically, providing information in a user-friendly and simple manner

    What Support Does Information and Communication Technology (ICT) Offer to Organizational Improvisation During Crisis Response ?

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    While evidence of the exceedingly important role of technology in organizational life is commonplace, academics have not fully captured the influence of Information and Communication Technology (ICT) on crisis response. A substantive body of knowledge on technology and crisis response already exists and keeps developing. Extensive research is on track to highlight how technology helps to prepare to crisis response and develop service recovery plans. However, some aspects of crisis response remain unknown. Among all the facets of crisis response that have been under investigation for some years, improvisation still challenges academics as a core component of crisis response. In spite of numerous insights on improvisation as a cognitive process and an organizational phenomenon, the question of how improvisers do interact together while improvising remains partly unanswered. As a result, literature falls short of details on whether crisis responders can rely on technology to interact when they have to improvise collectively. This dissertation therefore brings into focus ICT support to organizational improvisation in crisis response in two steps: We first address this question from a general standpoint by reviewing literature. We then propose an in depth and contextualized analysis of the use of a restricted set of technologies – emails, faxes, the Internet, phones - during the organizational crisis provoked by the 2003 French heat wave. Our findings offer a nuanced view of ICT support to organizational improvisation in crisis response. Our theoretical investigation suggests that ICTs, in a large sense, allow crisis responders to improvise collectively. It reports ICT properties - graphical representation, modularity, calculation, many-to-many communication, data centralization and virtuality – that promote the settling of appropriate conditions for interaction during organizational improvisation in crisis response. In the empirical work, we provide a more integrative picture of ICT support to organizational improvisation in crisis response by retrospectively observing crisis responders’ interactions during the 2003 French heat wave. Our empirical findings suggest that improvisation enables crisis responders to cope with organizational emptiness that burdens crisis response. However, crisis responders’ participation in organizational improvisation depends on their communicative genres. During the 2003 French heat wave crisis, administrative actors who had developed what we call a “dispassionate” communicative genre in relation to their email use, barely participated in organizational improvisation. Conversely, improvisers mainly communicated in what we call a “fervent” communicative genre. Therefore, our findings reveal that the ICT support to organizational improvisation in crisis response is mediated by the communication practices and strategies that groups of crisis responders develop around ICT tools

    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

    Quel apport des technologies de l’information et de la communication (tic) a l’improvisation organisationnelle durant la réponse à la crise ?.

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    Notre travail doctoral, structuré autour de deux études théoriques et d’une étude empirique, explore l’apport des Technologies de l’Information et de la Communication (TIC) à l’improvisation organisationnelle lors de la réponse à la crise. La première étude confirme la diversité de la littérature sur l’improvisation et révèle que les auteurs adoptent des postures différentes à quatre étapes du processus de recherche. La deuxième étude propose cinq mécanismes organisationnels fondamentaux au développement de l’improvisation organisationnelle. A partir de cette proposition, nous identifions six propriétés des TIC qui soutiennent l’improvisation de crise. Enfin, notre étude rétrospective qualitative du cas de la réponse à la crise provoquée par la canicule de 2003 en Île-de-France montre que le développement de l’improvisation, réponse au vide organisationnel qui pèse sur la réponse à la crise, dépend non seulement des propriétés des TIC mais également des genres de communication développés par les acteurs autour des moyens de communication. Durant la canicule, le genre fervent a facilité l’improvisation parmi les opérationnels. Au contraire, le genre dépassionné, prédominant dans les échanges électroniques, a freiné la participation des acteurs administratifs à l’improvisation. Certains d’entre eux sont tout de même parvenus à participer à l’improvisation en adaptant le genre dépassionné lors de leur utilisation du fax. Si les TIC facilitent certaines interactions, la faculté des acteurs à improviser dépend également de leur capacité à adapter leurs genres de communication.We explore Information and Communication Technology (ICT) support to organizational improvisation during crisis response by completing three studies. The first study confirms diversity in research on improvisation and suggests that author’s perspectives on improvisation diverge with respect to four tasks within the research process. The second study identifies five constituents of organizational improvisation. In addition, it reports six ICT properties that promote the settling of appropriate conditions for interaction during organizational improvisation in crisis response. In the empirical work, we provide a more integrative picture of ICT support to organizational improvisation in crisis response by retrospectively observing crisis responders’ interactions during the 2003 French heat wave. Our empirical findings suggest that improvisation enables crisis responders to cope with organizational emptiness that burdens crisis response. However, crisis responders’ participation in organizational improvisation depends on their communicative genres. During the 2003 French heat wave crisis, administrative actors who had developed what we call a dispassionate communicative genre in relation to their email use, barely participated in organizational improvisation. Conversely, improvisers mainly communicated in what we call a fervent communicative genre. Therefore, our findings reveal that the ICT support to organizational improvisation in crisis response is mediated by the communication practices and strategies that groups of crisis responders develop around ICT tools.Ile-de-France; Gestion de l'information; Vagues de chaleur; Comportement organisationnel; Nouvelles technologies de l'information et de la communication;

    Digitalisation of Development and Supply Networks: Sequential and Platform-Driven Innovations

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    We draw from an eight-year dataset of 98 organisational entities involved in pre-competitive innovation networks across the UK pharmaceutical sector. These data map into three networks that are representative of: (i) a product development-led sequential pathway that begins with digitalised product development, followed by digitalisation of supply networks, (ii) a supply network-led sequential pathway that starts with digitalised supply networks, followed by digitalisation of product development, and (iii) a parallel — platform-driven — pathway that enables simultaneous digitalisation of development, production, and supply networks. We draw upon extant literature to assess these network structures along three dimensions — strategic intent, the integrative roles of nodes with high centrality, and innovation performance. We conduct within-case and cross-case analyses to postulate 10 research propositions that compare and contrast modalities for sequential and platform-based digitalisation involving collaborative innovation networks. With sequential development, our propositions are congruent with conventional pathways for mitigating innovation risks through modular moves. On the other hand, we posit that platform-based design rules, rather than modular moves, mitigate the risks for parallel development pathways, and lead to novel development and delivery mechanisms

    Swarm Based Implementation of a Virtual Distributed Database System in a Sensor Network

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    The deployment of unmanned aerial vehicles (UAVs) in recent military operations has had success in carrying out surveillance and combat missions in sensitive areas. An area of intense research on UAVs has been on controlling a group of small-sized UAVs to carry out reconnaissance missions normally undertaken by large UAVs such as Predator or Global Hawk. A control strategy for coordinating the UAV movements of such a group of UAVs adopts the bio-inspired swarm model to produce autonomous group behavior. This research proposes establishing a distributed database system on a group of swarming UAVs, providing for data storage during a reconnaissance mission. A distributed database system model is simulated treating each UAV as a distributed database site connected by a wireless network. In this model, each UAV carries a sensor and communicates to a command center when queried. Drawing equivalence to a sensor network, the network of UAVs poses as a dynamic ad-hoc sensor network. The distributed database system based on a swarm of UAVs is tested against a set of reconnaissance test suites with respect to evaluating system performance. The design of experiments focuses on the effects of varying the query input and types of swarming UAVs on overall system performance. The results show that the topology of the UAVs has a distinct impact on the output of the sensor database. The experiments measuring system delays also confirm the expectation that in a distributed system, inter-node communication costs outweigh processing costs

    Demystifying paradox in modern IT organizations: A transformation toward ambidexterity

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