Mirko Lorenz - Profile on Academia.edu (original) (raw)

Papers by Mirko Lorenz

VISION Cloud: A Cloud Storage Solution Supporting Modern Media Production

SMPTE Motion Imaging Journal, 2013

A novel approach at producing media in the cloud efficiently and securely

International Broadcasting Convention (IBC) 2013 Conference, 2013

ABSTRACT This paper proposes a new approach to cloud-based media production based on a novel medi... more ABSTRACT This paper proposes a new approach to cloud-based media production based on a novel media cloud architecture, VISION Cloud, supporting highly efficient computation near data, advanced management capabilities and intrinsic abstraction of the storage layer. Applied to a specific user domain, the role and the functionality of cloud computing can change profoundly, connecting users and stored items in novel ways. This work is accompanied by a live demonstration of the developed technologies in the context of a real media production case.

The MESH mobile video annotation tool

Proceedings of the 5th Nordic conference on Human-computer interaction building bridges - NordiCHI '08, 2008

... Emilio Vargas, 6 ES-28043 MADRID SPAIN +34913373943; pedro.concejero@tid.es Jorge Munuera Tel... more ... Emilio Vargas, 6 ES-28043 MADRID SPAIN +34913373943; pedro.concejero@tid.es Jorge Munuera Telefónica Investigación y Desarrollo Emilio Vargas, 6 ES-28043 MADRID SPAIN +34913374760; jmunuer@tid.es Mirko Lorenz Deutsche Welle Strategy, Marketing & ...

2011 IEEE Third International Conference on Cloud Computing Technology and Science, 2011

The emergence of cloud environments has made feasible the delivery of Internet-scale services by ... more The emergence of cloud environments has made feasible the delivery of Internet-scale services by addressing a number of challenges such as live migration, fault tolerance and quality of service. However, current approaches do not tackle key issues related to cloud storage, which are of increasing importance given the enormous amount of data being produced in today's rich digital environment (e.g. by smart phones, social networks, sensors, user generated content). In this paper we present the architecture of a scalable and flexible cloud environment addressing the challenge of providing data-intensive storage cloud services through raising the abstraction level of storage, enabling data mobility across providers, allowing computational and content-centric access to storage and deploying new data-oriented mechanisms for QoS and security guarantees. We also demonstrate the added value and effectiveness of the proposed architecture through two real-life application scenarios from the healthcare and media domains.

Emerging Knowledge Management in Distributed Environments

We present a framework for role-based knowledge manage- ment in a multiagent environment. Our app... more We present a framework for role-based knowledge manage- ment in a multiagent environment. Our approach focuses on roles which are carried out by rational agents. The use of roles for knowledge man- agement, which is orthogonal to the organizational entity represented by an agent, reduces the computational cost of reasoning and simplifies the agent model. Our approach and illustrative examples are couched in the context of the logistics domain. Continued and strong demand for increased customization of products and their delivery has brought about a sea change in the economical landscape: from mar- kets that were predominantly controlled by sellers to markets that are now driven by buyers and their demands. To meet the resulting requirements in the logistics domain, participating enterprises investigate ways to restructure their business processes to allow for more autonomy in order to provide flexibility and rapid response when reacting to customer requests. Such restructuring away ...

Future Generation Computer Systems, 2010

The trends and recent changes in logistics lead to complex and partially conflicting requirements... more The trends and recent changes in logistics lead to complex and partially conflicting requirements on logistic planning and control systems. Due to the lack of efficiency of currently available strategies and methodologies, a new paradigm for logistics planning and control is required. An emerging approach is the analysis and design of autonomous logistic processes. Agents represent a modern approach for implementing autonomous systems. The challenge for the design of agent systems is to integrate the complex and dynamic knowledge required for reliable decision-making in logistics. To address this problem, we introduce a framework for distributed knowledge management in competitive environments. Our approach combines a general role model enabling distributed, flexible agent-based knowledge management services and a set of general decision parameters for rational agents.

Why do media organizations look out for cloud storage? In short, the media industry as a whole is... more Why do media organizations look out for cloud storage? In short, the media industry as a whole is facing various challenges. Due to digital convergence there is more material, less time, and multiple channels to fill, while budgets get smaller. TV, video on demand, and mobile content have become big drivers in pushing a search for innovative storage solutions. In addition to that, the opportunity to work with raw data, which can be used for deeper analysis, mapping, visualization, and personalized services is another aspect of why there is a need for novel storage solutions, preferably in the cloud. The media industry could lower production costs and increase speed to market of time critical reporting. This book chapter provides an overview of how far VISION Cloud can provide novel concepts for these demands.

2012 Federated Conference on Computer Science and Information Systems (FedCSIS), 2012

Content centric storage refers to a paradigm where applications access data objects through infor... more Content centric storage refers to a paradigm where applications access data objects through information about their content, rather than their path in a hierarchical structure. The application does not need any knowledge about the data store organization, or the place in a storage hierarchy. Rather, the application is able to query for the desired content based on metadata associated with the data objects. We illustrate the need for content centric storage and access through an example from a media production application. Our approach for building an industrial-capable content centric storage employs a cloud storage technology where metadata is treated as first class citizen and extends this technology with an API layer that manages and leverages metadata regarding content.

Content-centric storage: accessing data objects based on metadata and relationships. Informatyka Ekonomiczna = Business Informatics, 2012, Nr 3 (25), s. 38-60

Journalism and Media

Despite the growing interest in data journalism in newsrooms and its more recent emergence as an ... more Despite the growing interest in data journalism in newsrooms and its more recent emergence as an academic discipline, there is a need for systematic research on the state-of-the-art and current data journalism-related practices in newsrooms. The Global Data Journalism survey was an attempt to address this gap by studying the data journalism practices in newsrooms across the world. This study provides a descriptive view of the results of this study and discusses the findings on several aspects of data journalism practice, characteristics of data journalists and data teams, and their skills and educational requirements. We further provide insight into the values associated with journalistic work and analyse the ways in which the community believes data journalism has improved or undermined these values.

ROST, Alejandro (2014) “Interatividade: Definições, estudos e tendências”. En CANAVILHAS, Joao (O... more ROST, Alejandro (2014) “Interatividade: Definições, estudos e tendências”. En CANAVILHAS, Joao (Org). Webjornalismo: 7 caraterísticas que marcam a diferença. Covilha (Portugal): Livros LabCom Universidade Da Beira Interior. Pp 53-88. ISBN: 978-989-654-144-6.