Search results for: Patrick Wüchner

Items from 1 to 7 out of 7 results

chapter

A Method to Derive Local Interaction Strategies for Improving Cooperation in Self-Organizing Systems

Christopher Auer, Patrick Wüchner, Hermann Meer

Lecture Notes in Computer Science > Self-Organizing Systems > Theory and General Approaches > 170-181

To achieve a preferred global behavior of self-organizing systems, suitable local interaction strategies have to be found. In general, this is a non-trivial task. In this paper, a general method is proposed that allows to systematically derive local interaction strategies by specifying the preferred global behavior. In addition, the resulting strategies can be evaluated using Markovian analysis. Then,...

chapter

In Memory of Dr. Gunter Bolch

Martin Paterok, Hermann Meer, Patrick Wüchner

Lecture Notes in Computer Science > Measurement, Modelling, and Evaluation of Computing Systems and Dependability and Fault Tolerance > In Memoriam: Eulogy on Gunter Bolch > 3-7

The MMB Special Interest Group mourns for a highly valued member. Gunter Bolch died on May 29, 2008 in Erlangen, after a serious illness. He was very open minded, a beautifully moderate person, and a friend in its truest meaning. With MMB, he shared his academic passion of performance modelling, in general, and queueing networks, in particular.

chapter

Ad-Hoc Information Spread between Mobile Devices: A Case Study in Analytical Modeling of Controlled Self-organization in IT Systems

Kamil Kloch, Jan W. Kantelhardt, Paul Lukowicz, Patrick Wüchner, more

Lecture Notes in Computer Science > Architecture of Computing Systems - ARCS 2010 > Organic Computing and Self-organization > 101-112

We present an example of the use of analytical models to predict global properties of large-scale information technology systems from the parameters of simple local interactions. The example is intended as a first step towards using complex systems modeling methods to control self-organization in organic systems. It is motivated by a concrete application scenario of information distribution in emergency...

chapter

The Degree of Global-State Awareness in Self-Organizing Systems

Christopher Auer, Patrick Wüchner, Hermann Meer

Lecture Notes in Computer Science > Self-Organizing Systems > Theory and General Approaches > 125-136

Since the entities composing self-organizing systems have direct access only to information provided by their vicinity, it is a non-trivial task for them to determine properties of the global system state. However, this ability appears to be mandatory for certain self-organizing systems in order to achieve an intended functionality. Based on Shannon’s information entropy, we introduce a formal...

chapter

Modeling Wireless Sensor Networks Using Finite-Source Retrial Queues with Unreliable Orbit

Patrick Wüchner, János Sztrik, Hermann Meer

Lecture Notes in Computer Science > Performance Evaluation of Computer and Communication Systems. Milestones and Future Challenges > Modeling > 73-86

Motivated by the need for performance models suitable for modeling and evaluation of wireless sensor networks, we introduce a retrial queueing system with a finite number of homogeneous sources, unreliable servers, orbital search, and unreliable orbit. All random variables involved in model construction are assumed to be independent and exponentially distributed. Providing a generalized stochastic...

chapter

Combined contention and TDMA-based communication in wireless sensor networks

Vicente Casares-Giner, Patrick Wuchner, Diego Pacheco-Paramo, Hermann de Meer

Proceedings of the 8th Euro-NF Conference on Next Generation Internet NGI 2012 > 1 - 8

2012 8th Euro-NF Conference on Next Generation Internet (NGI)

Wireless sensor networks usually consist of a large number of very small, energy-constrained sensor nodes. The nodes capture information from their immediate environment to send it to a destination node (sink) in a timely manner.

article

Finite-source M/M/S retrial queue with search for balking and impatient customers from the orbit

Patrick Wüchner, János Sztrik, Hermann de Meer

Computer Networks > 2009 > 53 > 8 > 1264-1273

The present paper deals with a generalization of the homogeneous multi-server finite-source retrial queue with search for customers in the orbit. The novelty of the investigation is the introduction of balking and impatience for requests who arrive at the service facility with a limited capacity and FIFO queue. Arriving customers may balk, i.e., they either join the queue or go to the orbit. Moreover,...

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Search results for: Patrick Wüchner

A Method to Derive Local Interaction Strategies for Improving Cooperation in Self-Organizing Systems

In Memory of Dr. Gunter Bolch

Ad-Hoc Information Spread between Mobile Devices: A Case Study in Analytical Modeling of Controlled Self-organization in IT Systems

The Degree of Global-State Awareness in Self-Organizing Systems

Modeling Wireless Sensor Networks Using Finite-Source Retrial Queues with Unreliable Orbit

Combined contention and TDMA-based communication in wireless sensor networks

Finite-source M/M/S retrial queue with search for balking and impatient customers from the orbit

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