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Prof. Dr. Andreas Berl

Faculty of Computer Science

Professors

Professor

Course coordinator for the Artificial Intelligence and Data Science master’s course
Member of the Examination Committee Applied Computer Science / Interactive Systems / Cyber Security, Life Science Informatics
Member of the Faculty Council of the Faculty of Applied Computer Science
Academic advisor for the Applied Computer Science bachelor's degree

ITC2 2.43

0991/3615-530

consulting time

Consultation hour by appointment per mail

publications

Sortierung:

Zeitschriftenartikel

Markus Eider
B. Sick
Andreas Berl

Context-aware recommendations for extended electric vehicle battery lifetime [Submitted article]

In: Sustainable Computing: Informatics and Systems

Elsevier B.V.

(2022)

Angewandte Informatik
MOBIL

Beitrag (Sammelband oder Tagungsband)

Nicki Bodenschatz
Markus Eider
Andreas Berl

Challenges and requirements of electric vehicle fleet charging at company parking sites

pg. 623-628.

(2021)

DOI: 10.1109/ACIT52158.2021.9548563

Abstract anzeigen

The uprising number of electric vehicles on company parking sites creates a variety of challenges, in terms of scheduling charging processes. In uncoordinated charging, peaks loads can occur that harm the low voltage grid and make the company pay a higher electricity bill. Further, some vehicles may not be charged enough to be used for service appointments at customer homes. In a first step, this paper highlights the individual problems in detail that can appear in a company parking scenario. Next, it is shown that charging scheduling in a company case is not trivial. Finally, requirements to a software-based solution of the challenges are derived from the individual problems.

Angewandte Informatik
MOBIL

Beitrag (Sammelband oder Tagungsband)

Markus Eider
Nicki Bodenschatz
Andreas Berl

Evaluation of machine learning algorithms for the prediction of simulated company parking space occupancy

pg. 739-743.

(2021)

DOI: 10.1109/ACIT52158.2021.9548487

Abstract anzeigen

Parking lots of cities and companies are congested when employees get to work in the morning hours. Some people might need to switch to public parking spaces if there is no spot left at their workplace. This is a serious challenge, as nowadays and especially in the future, the ratio of electric vehicles in transportation is growing. Therefore, electric vehicle users require guaranteed charging spots for the continuation of their journey. To enable reservations of parking and charging spots ahead of time, companies want to gain knowledge on upcoming vehicle numbers. So, there is a need for prediction models. However, there is little research done on prediction technologies for company parking spaces. In this paper, four different models from machine learning and statistics are compared in predicting the presence of vehicles from the user groups employees, fleet and visitors. They are trained on simulated occupancy data throughout one year. An evaluation shows that decision trees and artificial neural networks perform well for the case of company parking.

Angewandte Informatik
MOBIL

Vortrag

Andreas Berl

Ein Lehrkonzept in Zeiten von Corona

In: 12. DACHS-Symposium für Lehre und angewandte Forschung in Informatik und Wirtschaftsinformatik

Deggendorf

13.-14.09.2021 (2021)

Angewandte Informatik

Beitrag (Sammelband oder Tagungsband)

M. Ciolacu
Bernhard Haderer
Andreas Berl
P. M. Svasta

Education 4.0: Innovation Learning Lab for AI-Analysis and Concept Proposal

pg. 45-50.

(2021)

DOI: 10.1109/SIITME53254.2021.9663426

Abstract anzeigen

The Industry 4.0 revolution marks a turning point in many areas – the digitization of the industry, and exposes the shortcomings in Higher Education, from inadequate infrastructures to digital literacy, digital teaching and learning scenarios. This paper describes and analyses the hardware and the software concept for an Education 4.0 Innovation Learning Lab for Artificial Intelligence (E4ILLAI). This can be used in higher education, but also for further research projects. Graphics processing unit (GPU) and AI developer kits are analysed, as an important part of the laboratory, but also criteria such as modularity, easy to use, prototyping, low cost, and flexibility plays an important role. Our contribution is developing competences in dealing with AI systems such as robots for autonomous systems (e.g. Waveshare JetBots) as well as with humanoid robots (NAO6) for support in the health care institutions.

Angewandte Informatik
DIGITAL

Beitrag (Sammelband oder Tagungsband)

Markus Eider
Andreas Berl

Requirements for prescriptive recommender systems extending the lifetime of EV batteries

pg. 412-417.

(2020)

DOI: 10.1109/ACIT49673.2020.9209011

Abstract anzeigen

Lithium-ion batteries in electric vehicles are subject to degradation, which is strongly influenced by the actions of vehicle users. Hereby, inexperienced users can cause the battery to reach its end of life state earlier than average. For this reason, this paper proposes the concept of a prescriptive recommender system that supports users in planning their utilization actions. The paper identifies functionalities of decision support systems relevant to extend the lifetime of electric and electronic systems. This allows to determe generic functional and non-functional requirements for prescriptive recommender systems. Further, the derived requirements are discussed in connection to the practicability of a prescriptive recommender system.

Angewandte Informatik
TC Plattling MoMo
MOBIL
NACHHALTIG

Vortrag

Markus Eider
Andreas Berl

Requirements for prescriptive recommender systems extending the lifetime of EV batteries

In: 2020 10th International Conference on Advanced Computer Information Technologies (ACIT)

Deggendorf

16.-18.09.2020 (2020)

Angewandte Informatik
TC Plattling MoMo
DIGITAL
NACHHALTIG

Beitrag (Sammelband oder Tagungsband)

Nicki Bodenschatz
Markus Eider
Andreas Berl

Mixed-Integer-Linear-Programming model for the charging scheduling of electric vehicle fleets

pg. 741-746.

(2020)

DOI: 10.1109/ACIT49673.2020.9208875

Abstract anzeigen

The number of electric vehicles is steadily increasing of the past few years. This transition to electric vehicles bears the challenge, to integrate the charging processes into the grid without overstressing it. To prevent this, research has tackled lately the scheduling of electric vehicle charging. Especially the charging of electric vehicle fleets is in the focus of research. There are already different solution approaches to increase the grid stability, to increase the intake of locally produced renewable energy or simply to reduce the cost. However, all these solution approaches use different mathematical models with different parameters to represent the charging scheduling problem. This results in the problem that each model is applicable for a special use case only, other use cases might need other parameters for the scheduling of the electric vehicle fleet. To ease this problem, this paper provides a detailed mathematical model for the cost minimization of a general electric fleet in the form of a mixed-integer-linearprogram. In order to do this, the paper shows that different research approaches use different parameters in their solutions. Afterwards, the paper presents a general overview of technical limitations for the electric fleets. On foundation of these limitations a mixed-integer-linear-program model for a wide range of electric fleets is established. Also, the paper provides options to extend the model in order to improve the result of an optimal schedule.

TC Plattling MoMo
Angewandte Informatik
DIGITAL
MOBIL

Vortrag

Nicki Bodenschatz
Markus Eider
Andreas Berl

Mixed-Integer-Linear-Programming model for the charging scheduling of electric vehicle fleets

In: 2020 10th International Conference on Advanced Computer Information Technologies (ACIT)

Deggendorf

16.-18.09.2020 (2020)

Angewandte Informatik
TC Plattling MoMo
NACHHALTIG
DIGITAL

Zeitschriftenartikel

Christina Sigl
Siegfried Hildebrand
Alexander Faschingbauer
Andreas Berl
J. Geyer
M. Prokýšek
R. Vohnout

Sustainable Peer-to-Peer Energy Trading Principles and Smart Meter Requirements for Smart Grids

In: Bavarian Journal of Applied Sciences vol. 5 pg. 461-475.

(2019)

DOI: 10.25929/bjas.v5i1.66

Abstract anzeigen

The sustainability and efficiency of the current and future power grid is an important topic nowadays. Thus, the increasing usage of renewable energy sources for generation of electricity requires a more complex infrastructure to manage generation and demand efficiently. In order to stabilize a power grid there are different methods to trade energy sources. Especially for smart grid infrastructures, the most interesting approach is to trade energy peer-to-peer. Thus, we consider different peer-to-peer principles in detail. Particularly, the underlying subsystem is essential for fast and accurate trading. That is why smart meters, forming the lowest layer of the system, are one of the most important parts within the grid infrastructure. Their main task is to provide high quality information and services for smart contracting and also for controlling the power grid with regard to efficiency and sustainability. The information provided by smart meters can also be used within a smart energy management to optimize production and consumption times. This demand side management approach helps to prevent overproduction and hence leads to more sustainablitiy in future decentralized power grids. For this purpose, peer-to-peer methods and smart meters have to fulfil dedicated requirements which are considered here in more detail.

TC Freyung
Angewandte Wirtschaftswissenschaften
NACHHALTIG

Beitrag (Sammelband oder Tagungsband)

Siegfried Hildebrand
Christina Sigl
Andreas Berl

Smart Grid Technologies for Rural Areas and SMEs

pg. 71.

(2019)

Angewandte Informatik
TC Freyung
DIGITAL
NACHHALTIG

Beitrag (Sammelband oder Tagungsband)

Nicki Bodenschatz
Andreas Berl

Viability and Optimality of Electric Vehicle Fleet Schedules

pg. 425-430.

(2019)

Abstract anzeigen

The number of electric vehicles is steadily growing and commercial fleet owners follow this trend. However, the charging of fleets has a major impact on the already stressed power grid. To prevent negative impact on the grid, it is necessary to schedule charging processes. This charging scheduling should not only utilize the existing charging infrastructure and the available resources, but it should furthermore allow an optimized charging schedule, e.g. in terms of cost reduction. This scheduling problem is complex and it needs significant information about infrastructure and fleet in order to create a viable charging schedule. However, not all of the relevant information is always available. For this reason, this paper analysis the possibilities to create a charging schedule with missing information. To achieve this, the paper provides a detailed description of the charging scheduling problem for a day ahead planning and the necessary input parameters. It clarifies the influence of the input parameters on the viability and optimality of a charging schedule. On this base, the paper establishes data sets with different degrees of scheduling possibilities. Further, the paper analyses the affectation of missing input parameters on the scheduling and it provides possible solutions to approximate the missing parameters under the proposition to guarantee the viability of a charging schedule.

Angewandte Informatik
MOBIL

Beitrag (Sammelband oder Tagungsband)

Christina Sigl
Alexander Faschingbauer
Andreas Berl

Management of Virtual Desktops in Energy Efficient Office Environments Using Thin Clients

(2018)

TC Freyung
DIGITAL

Beitrag (Sammelband oder Tagungsband)

Markus Eider
Andreas Berl

Dynamic EV Battery Health Recommendations

pg. 586-592.

New York, NY

(2018)

TC Freyung
NACHHALTIG
MOBIL

Vortrag

Christina Sigl
Alexander Faschingbauer
Andreas Berl

Management of Virtual Desktops in Energy Efficient Office Environments Using Thin Clients

In: Ninth International Conference on Cloud Computing, GRIDs, and Virtualization (CLOUD COMPUTING 2018), colocated with ComputationWorld 2018

Barcelona, Spanien

18.-22.02.2018 (2018)

Elektrotechnik und Medientechnik
TC Freyung
DIGITAL
NACHHALTIG

Beitrag (Sammelband oder Tagungsband)

Nicki Bodenschatz
Diana Schramm
Markus Eider
Andreas Berl

Classification of Electric Vehicle Fleets Considering the Complexity of Fleet Charging Schedules . [Status: Presented]

New York, NY

(2018)

TC Freyung
MOBIL

Vortrag

Christina Sigl
Andreas Berl
Alexander Faschingbauer

Smart Grid-Technologien für ländliche Gebiete und KMU . Posterpräsentation

In: 5. Tag der Forschung

Technische Hochschule Deggendorf Deggendorf

08.03.2018 (2018)

TC Freyung
DIGITAL
MOBIL

Vortrag

Markus Eider
Andreas Berl

Verlängerte Batterielebensdauer von Elektrofahrzeugen durch dynamische Nutzungsempfehlungen

In: 4. Jahreskonferenz des Netzwerks INDIGO (Internet und Digitalisierung Ostbayern)

Technische Hochschule Deggendorf Deggendorf

23.11.2018 (2018)

TC Freyung
Elektrotechnik und Medientechnik
MOBIL

Vortrag

Christina Sigl
Andreas Berl

Benchmarking and User Types in Virtual Desktop Infrastructures

In: 2018 IEEE 14th International Conference on Intelligent Computer Communication and Processing (ICCP)

Cluj-Napoca, Romania

06.-08.09.2018 (2018)

TC Freyung
Elektrotechnik und Medientechnik
DIGITAL
NACHHALTIG

Vortrag

Christina Sigl
Alexander Faschingbauer
Andreas Berl

WVDI - Workstation based Virtual Desktop Infrastructure. Eine verteilte hyperkonvergente Infrastruktur. . Posterpräsentation

In: 5. Tag der Forschung

Technische Hochschule Deggendorf Deggendorf

08.03.2018 (2018)

TC Freyung
NACHHALTIG
DIGITAL

Beitrag (Sammelband oder Tagungsband)

Christina Sigl
Alexander Faschingbauer
Andreas Berl
J. Geyer
R. Vohnout
M. Prokýšek

The Role of Smart Meters in P2P Energy Trading in the Low Voltage Grid

pg. 280-284.

(2018)

TC Freyung
NACHHALTIG

Beitrag (Sammelband oder Tagungsband)

Markus Eider
Diana Schramm
Nicki Bodenschatz
Andreas Berl
P. Danner
H. Meer

A Novel Approach on Battery Health Monitoring

(2018)

TC Freyung
DIGITAL

Vortrag

Christina Sigl
Alexander Faschingbauer
Andreas Berl
J. Geyer
R. Vohnout
M. Prokýšek

The Role of Smart Meters in P2P Energy Trading in the Low Voltage Grid

In: Advanced Computer Information Technologies- ACIT 2018

České Budějovice, Czech Republic

01.-03.06.2018 (2018)

Elektrotechnik und Medientechnik
TC Freyung
DIGITAL
NACHHALTIG

Beitrag (Sammelband oder Tagungsband)

Christina Sigl
Andreas Berl

Benchmarking and User Types in Virtual Desktop Infrastructures

pg. 47-54.

(2018)

TC Freyung
Elektrotechnik und Medientechnik
DIGITAL
NACHHALTIG

Beitrag (Sammelband oder Tagungsband)

Markus Eider
Andreas Berl

Dynamic Generation of Recommendations for EV Battery Health

(2018)

DOI: 10.23919/EETA.2018.8493182

Abstract anzeigen

Electric vehicles equipped with Lithium-ion batteries face performance loss due to battery ageing. This effect can be actively influenced through behaviour introduced by vehicle users. Therefore, this paper proposes a dynamic recommendation architecture to automatically generate dynamic recommendations in order to prolong battery lifetime. We propose dynamic recommendations as well as requirements for them. The recommendations suggest a certain user behaviour for a specific chronological scope in the future as well as a weight based on their impact on maintaining battery health. Furthermore, we present an exemplary architecture, based on the requirements. Using historical electric vehicle driving data, it can automatically derive dynamic recommendations.

TC Freyung
MOBIL
NACHHALTIG

Zeitschriftenartikel

Diana Schramm
Nicki Bodenschatz
Andreas Berl

Usage Profiling in Electric Vehicles

In: Bavarian Journal of Applied Sciences vol. 4 pg. 342-353.

(2018)

DOI: 10.25929/bjas.v4i1.52

Abstract anzeigen

In the overall effort of reducing CO2 emissions, the significance of alternative drive engines is growing. The transition from combustion engine vehicles to electric vehicles is high on the political agendas, with governments providing extensive funding to promote electric mobility. However, there are still challenges that hamper the dissemination of electric vehicles. One of those challenges is the limited range and the resulting range anxiety. Displayed vehicle range data contribute to this, as they are relatively inaccurate and might vary quite strongly during individual trips. This problem could be addressed by personalizing the range display according to the driving style of the current driver. Driver assistance services, like distance control, are becoming increasingly personalized nowadays, however, they are predominantly designed for internal combustion engine vehicles. In this paper, relevant input parameters for classifying the driving styles of electric vehicle users are identified. Furthermore, a system based on real-life driving data is developed to determine the driving style. Real-life driving data were collected in experiments and used to profile the driving style by means of fuzzy logic. Based on the results, an approach for a realistic classification of driving styles of electric vehicle users is discussed.

Elektrotechnik und Medientechnik
MOBIL

Vortrag

Nicki Bodenschatz
Markus Eider
Diana Schramm
Andreas Berl

Optimierte Ladeplanung von Elektrofahrzeugflotten . Posterpräsentation

In: 5. Tag der Forschung

Technische Hochschule Deggendorf Deggendorf

08.03.2018 (2018)

TC Freyung
MOBIL

Beitrag (Sammelband oder Tagungsband)

Markus Eider
Diana Schramm
Andreas Berl
R. Basmadjian
H. Meer
S. Klingert
T. Schulze
F. Kutzner
C. Kacperski
M. Štolba

Seamless Electromobility

pg. 316-321.

New York NY

(2017)

DOI: 10.1145/3077839.3078461

Abstract anzeigen

The existing electromobility (EM) is still in its fledgling stage and multiple challenges have to be overcome to make Electric Vehicles (EVs) as convenient as combustion engine vehicles. Users and Electric Vehicle Fleet Operators (EFOs) want their EVs to be charged and ready for use at all times. This straightforward goal, however, is counteracted from various sides: The range of the EV depends on the status and depletion of the EV battery which is influenced by EV use and charging characteristics. Also, most convenient charging from the user's point of view, might unfortunately lead to problems in the power grid. As in the case of a power peak in the evening when EV users return from work and simultaneously plug in their EVs for charging. Last but not least, the mass of EV batteries are an untapped potential to store electricity from intermittent renewable energy sources. In this paper, we propose a novel approach to tackle this multi-layered problem from different perspectives. Using on-board EV data and grid prediction models, we build up an information model as a foundation for a back end service containing EFO and Charging Station Provider (CSP) logic as well as a central Advanced Drivers Assistant System (ADAS). These components connect to both battery management and user interfaces suggesting various routing and driving behaviour alternatives customized and incentivized for the current user profile optimizing above mentioned goals.

TC Freyung
MOBIL

Zeitschriftenartikel

Andreas Berl
H. Meer

Intelligentes Stromnetz der Zukunft

In: Niederbayern-Forum e.V. - Das Who is Who der Niederbayerischen Energiewirtschaft pg. 90-91.

(2014)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

J. Benze
Andreas Berl
K. Daniel
G. Eibl
D. Engel
Andreas Fischer
U. Hofmann
A. Kießling
S. Köpsell
L. Langer
H. Meer
C. Neureiter
M. Niedermeier
T. Pfeiffenberger
M. Pietsch
A. Veichtlbauer

VDE-Positionspapier Energieinformationsnetze und -systeme (Smart Grid Security)

Berlin

(2014)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
M. Beck
S. Klingert
H. Meer

The Benefits of Integrating Data Centres into Demand-Response Management: A Local Case Study

In: Energieinformatik 2013. 2. D-A-C-H Energieinformatik Konferenz (booksocg.at)

Wien

(2013)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
M. Niedermeier
H. Meer

Smart Grid Considerations - Energy Efficiency vs. Security

pg. 159-198.

(2013)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
M. Niedermeier
Andreas Fischer
D. Hutchinson
H. Meer

Virtual Energy Information Network: A Resilience Perspective

In: e&i Elektrotechnik & Informationstechnik (Special Issue on ’Smart Grid and Security’) vol. 130 pg. 121-126.

(2013)

Abstract anzeigen

Increasing demand in energy consumption, missed modernisations, and the increasing difficulties in predicting power production due to volatile renewable energy sources (e.g., based on wind or sun) impose major challenges to the power grid. Power supply and power demand are closely interconnected with the need to maintain the power grid in a stable state with a sufficient quality of power. This requires energy-relevant information to be exchanged through the so called Energy Information Network. Communication, however, is challenging within the Energy Information Network due to privacy, security, resiliency, and quality-of-service requirements. Particularly, the resilience of communication within the Energy Information Network needs to be considered to maintain the power grid in a stable and controlled state. This paper suggests a Virtualised Energy Information Network (VEIN), where the Energy Information Network is divided into multiple virtual networks that run over a common substrate network. Furthermore, this paper discusses benefits of this approach in terms of privacy, security, and resilience and points out open research questions.

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
G. Lovász
F. Tüllenburg
H. Meer

Modelling Power Adaption Flexibility of Data Centres for Demand-Response Management

In: Energy Efficiency in Large Scale Distributed Systems: COST IC0804 European Conference, EE-LSDS 2013, Vienna, Austria, April 22-24, 2013, Revised Selected Papers. null (Lecture Notes in Computer Science 8046) pg. 63-66.

(2013)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

G. Lovász
F. Niedermeier
Andreas Berl
H. Meer

Energia e futura Internet . RTI - Redes, Telecom e Instalacoes

In: Aranda Editora Tecnica e Cultural vol. 13 pg. 70-75.

(2012)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

S. Klingert
Andreas Berl
M. Beck
R. Serban
M. Di Girolamo
G. Giuliani
H. Meer
A. Salden

Sustainable Energy Management in Data Centres through Collaboration

In: Energy efficient data centers. First International Workshop, E²DC 2012, Madrid, Spain, Mai 8, 2012, Revised selected papers (LNCS sublibrary. SL 5, Computer communication networks and telecommunications) pg. 13-24.

Berlin; New York

(2012)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
G. Lovász
H. Meer
T. Zettler

Survey on Energy Efficiency in Office and Residential Computing Environments

In: Journal on Green Engineering vol. 2 pg. 255-272.

(2012)

Abstract anzeigen

Cloud Computing is today's most emphasized Information and Communications Technology (ICT) paradigm that is directly or indirectly used by almost every online user. However, such a great significance comes with a support of a great infrastructure that includes large data centers comprising thousands of server units and other supporting equipment. Their share in power consumption generates between 1.1% and 1.5% of the total electricity use worldwide, and is projected to rise even more. Such alarming numbers demand rethinking the energy efficiency of such infrastructures. However, before making any changes to the infrastructure, an analysis of the current status is required. In this paper we perform a comprehensive analysis of an infrastructure supporting the Cloud Computing paradigm with regards to the energy efficiency. First, we define a systematic approach for analysing energy efficiency of most important data center domains, including server and network equipment, as well as cloud management systems and appliances consisting of a software utilized by end users. Secondly, we utilize this approach for analysing available scientific and industrial literature on state of the art practices in data centers and its equipment. Finally, we extract existing challenges and highlight future research directions.

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
H. Meer

Redução do consumo de energia de computadores de escritórios

In: Electricidade Moderna pg. 66-77.

(2011)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

G. Lovász
F. Niedermeier
Andreas Berl
H. Meer

Energy- and Performance-Aware Resource Management in G-Lab and Future Internet Infrastructures

(2011)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

G. Lovász
Andreas Berl
H. Meer

Energy-Efficient and Performance-Conserving Resource Allocation in Data Centers

pg. 31-35.

[Toulouse]

(2011)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
H. Meer

An Energy-Consumption Model for Energy-Efficient Office Environments

In: Future Generation Computer Systems vol. 27 pg. 1047-1055.

(2011)

Abstract anzeigen

The rising costs of energy and the world-wide desire to reduce CO2 emissions has led to an increased concern over the energy efficiency of information and communication technology. Whilst much of this concern has focused on data centres, also office hosts that are located outside of data centres (e.g., in public administration or companies) have been identified as significant consumers of energy. Office environments offer great potential for energy savings, given that computing equipment often remains powered for 24 hours per day, and for a large part of this period is underutilised or even idle. This paper investigates the energy consumption of hosts in office environments, discusses the potential of energy savings and proposes an energy-efficient office management approach based on resource virtualization, power management, and service consolidation. Different virtualization techniques are used to enable management and consolidation of office resources. Idle services are stopped from consuming resources on the one hand and (underutilized) services are consolidated on a smaller number of hosts on the other hand.

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
H. Meer

Integrating Mobile Cellular Devices into Popular Peer-to-Peer Systems

In: Telecommunication Systems vol. 48 pg. 173-184.

(2011)

Abstract anzeigen

Today, peer-to-peer content-distribution networks are highly popular among users that have stationary computers with high-bandwidth Internet connections. Mobile devices (e.g. cell phones) that are connected to the Internet via cellular-radio networks, however, could not yet be launched into this field to a satisfactory extent. Although most mobile devices have the necessary hardware resources for joining peer-to-peer content-distribution networks, they are often not able to benefit from participation in an energy efficient way, due to limitations caused by mobility. In this work, mobile devices are identified as providers of advanced mobile features and services that are usually not available to computers in stationary networks. These mobile features and services can be exchanged for services in peer-to-peer networks, turning mobile devices into valuable trading partners. Partnership schemes are set up to define the way of a fair cooperation between mobile devices and other peers. A novel peer-to-peer architecture is suggested that applies partnership schemes to a well-established peer-to-peer content-distribution network and facilitates the integration of mobile devices.

Elektrotechnik und Medientechnik

Hochschulschrift

Andreas Berl

Energy Efficiency in Office Computing Environments . Wissenschaftspreis der Universität Passau 2012

Universität Passau Passau Fakultät für Informatik und Mathematik

2011 (2011)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
N. Race
J. Ishmael
H. Meer

Network Virtualization in Energy-Efficient Office Environments

In: Computer Networks (ComNet) vol. 54 pg. 2856-2868.

(2010)

Abstract anzeigen

The rising costs of energy and world-wide desire to reduce CO2 emissions has led to an increased concern over the energy efficiency of information and communication technology. Whilst much of this concern has focused on data centres, office environments (and the computing equipment that they contain) have also been identified as a significant consumer of energy. Office environments offer great potential for energy savings, given that computing equipment often remains powered for 24 h per day, and for a large part of this period is underutilised or idle. This paper proposes an energy-efficient office management approach based on resource virtualization, power management, and resource sharing. Evaluations indicate that about 75% energy savings are achievable in office environments without a significant interruption of provided services. A core element of this office management is a peer-to-peer network that interconnects office hosts, achieves addressing and mediation, and manages energy efficiency within the office environment. Several peer-to-peer approaches are suggested and discussed in this paper. Two of the approaches are evaluated, based on a discrete-event simulation.

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
H. Meer

A Virtualized Energy-Efficient Office Environment

pg. 11-20.

(2010)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl

Modeling Mobility

pg. 337-339.

Berlin; New York

(2010)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
Andreas Fischer
H. Meer

Virtualisierung im Future Internet - Virtualisierungsmethoden und Anwendungen

In: Informatik-Spektrum vol. 33 pg. 186-194.

(2010)

DOI: 10.1007/s00287-010-0420-z

Abstract anzeigen

Das Future Internet stellt sich der Herausforderung, die Verknöcherung und die Unzulänglichkeiten des heutigen Internets zu überwinden. Es soll beispielsweise robust, zuverlässig und fehlertolerant sein und dabei Dienste auf energieeffiziente Weise erbringen. Zusätzlich müssen auch neue Anforderungen antizipiert werden, die zukünftige Dienste und Netze stellen, um der Entwicklung von neuen Diensten und Protokollen nicht im Wege zu stehen. Erforderlich ist hierbei die Entwicklung einer äußerst variablen und rekonfigurierbaren Netzwerkarchitektur, die eine möglichst einfache und autonome Netzwerkverwaltung mit einschließt. Die Virtualisierung von Host- und Netzwerkressourcen stellt in diesem Zusammenhang eine der Schlüsseltechnologien dar, mit der diese notwendige Flexibilität erreicht werden kann. Virtualisierung verbirgt die Komplexität von physikalischen Netzwerkinfrastrukturen und stellt homogene, flexible und dynamisch rekonfigurierbare virtuelle Ressourcen zur Verfügung. Dieser Artikel gibt einen Überblick über verschiedene Host- und Netzwerkvirtualisierungsmethoden. An mehreren Beispielen wird aufgezeigt, wie verschiedene Herausforderungen angegangen werden können, die sowohl im heutigen Internet als auch im Internet der Zukunft eine Rolle spielen.

Elektrotechnik und Medientechnik
DIGITAL

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
H. Meer

Energy-Efficient Office Environments

pg. 101-105.

(2010)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

K. Tutschku
Andreas Berl
T. Hoßfeld
H. Meer

Mobile P2P in Cellular Networks: Architecture and Performance

pg. 349-373.

Hershey, PA

(2009)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

J. Rubio-Loyola
J. Serrat
A. Astorga
Andreas Fischer
Andreas Berl
H. Meer
G. Koumoutsos

A Viewpoint of the Network Management Paradigm for Future Internet Networks

pg. 93-100.

(2009)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
Andreas Fischer
H. Meer

Using System Virtualization to Create Virtualized Networks

In: Electronic Communications of the EASST (Workshops der Wissenschaftlichen Konferenz Kommunikation in Verteilten Systemen (WowKiVS2009) vol. 17 pg. 1-12.

(2009)

Abstract anzeigen

The method of system virtualization is very popular for the use in data centers and desktop virtualization today. In this work, system virtualization is applied to core network elements (routers and links) in order to create a virtualized network. The selection of this virtualization method crucially determines the emerging network model. The network model consists of virtual networks, virtual routers, and virtual links that form overlays on top of the physical network. The properties, features, and limitations of this network model are analyzed and described in this paper. Additionally, a proof of concept implementation using currently available technology and infrastructure is presented. Finally the dynamic configurability of virtual resources in such a system virtualization based virtualized network is evaluated.

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
H. Meer

An Energy-Efficient Distributed Office Environment

pg. 117-122.

(2009)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
H. Hlavacs
R. Weidlich
M. Schrank
H. Meer

Network Virtualization in Future Home Environments

In: Integrated management of systems, services, processes and people in IT. Proceedings of the 20th International Workshop on Distributed Systems: Operations and Management (DSOM09) (Lecture Notes in Computer Science) pg. 177-190.

Berlin [u.a.]

(2009)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
H. Meer
T. Hoßfeld

P2P Solutions for Cellular Networks

pg. 54-59.

(2009)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
E. Gelenbe
M. Di Girolamo
H. Giuliani
H. Meer
M. Quan Dang
K. Pentikousis

Energy-Efficient Cloud Computing

In: The Computer Journal pg. 1-7.

(2009)

Abstract anzeigen

Energy efficiency is increasingly important for future information and communication technologies (ICT), because the increased usage of ICT, together with increasing energy costs and the need to reduce green house gas emissions call for energy-efficient technologies that decrease the overall energy consumption of computation, storage and communications. Cloud computing has recently received considerable attention, as a promising approach for delivering ICT services by improving the utilization of data centre resources. In principle, cloud computing can be an inherently energy-efficient technology for ICT provided that its potential for significant energy savings that have so far focused on hardware aspects, can be fully explored with respect to system operation and networking aspects. Thus this paper, in the context of cloud computing, reviews the usage of methods and technologies currently used for energy-efficient operation of computer hardware and network infrastructure. After surveying some of the current best practice and relevant literature in this area, this paper identifies some of the remaining key research challenges that arise when such energy-saving techniques are extended for use in cloud computing environments.

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

A. Galis
S. Denazis
A. Bassi
P. Giacomin
Andreas Berl
Andreas Fischer
H. Meer
J. Strassner
S. Davy
D. Macedo
G. Pujolle
J. Rubio-Loyola
J. Serrat
L. Lefevre
A. Cheniour

Management Architecture and Systems for Future Internet Networks

pg. 112-122.

Washington, DC

(2009)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

Andreas Berl
H. Meer
H. Hlavacs
T. Treutner

Virtualization in Energy-Efficient Future Home Environments

In: IEEE Communications Magazine vol. 47 pg. 62-67.

(2009)

Abstract anzeigen

Home environments promise high potential in terms of resource sharing and energy saving. More and more home computers are running on an always-on basis (e.g., media centers or file sharing clients). Such home environments have not been sufficiently analyzed regarding the possibility of aggregating home user resources in an energy-efficient way. This article describes a future home environment in which available hardware resources (e.g., CPU cycles, disk space, or network capacity) are shared energy efficiently and balanced among end users. Furthermore, the article provides an overview of different virtualization methods that are needed in future home environments to enable cooperation of home networks. Virtualization-related requirements are discussed in detail and virtualization methods and concepts are compared to each other with respect to their usability in the architecture.

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
H. Meer

Integration of Mobile Devices into Popular Peer-to-Peer Networks

Piscataway, NJ

(2009)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

S. Davy
C. Fahy
L. Griffin
Z. Boudjemil
Andreas Berl
Andreas Fischer
H. Meer
J. Strassner

Towards a Policy-Based Autonomic Virtual Network to Support Differentiated Security Services

(2008)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

L. Cheng
A. Galis
B. Mathieu
K. Jean
R. Ocampo
L. Mamatas
J. Rubio-Loyola
J. Serrat
Andreas Berl
H. Meer
S. Davy
Z. Movahedi
L. Lefevre

Self-organising Management Overlays for Future Internet Services

In: Modelling Autonomic Communications Environments - Proceedings of the 3rd IEEE international workshop, MACE 2008 (September 22-26, 2008; Samos Island, Greece). null (LNCS sublibrary. Computer communication networks and telecommunications) pg. 74-89.

Berlin

(2008)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Fischer
Andreas Berl
H. Meer

Virtual Network Management with XEN

(2008)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

C. Fahy
S. Davy
Z. Boudjemil
Van der Meer, S.
J. Rubio-Loyola
J. Serrat
J. Strassner
Andreas Berl
H. Meer
D. Macedo

Towards an Information Model That Supports Service-Aware, Self-Managing Virtual Resources

Berlin

(2008)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

H. Hlavacs
K. Hummel
R. Weidlich
A. Houyou
Andreas Berl
H. Meer

Energy Efficiency in Future Home Environments: A Distributed Approach

In: Home networking. First IFIP WG 6.2 home networking conference (IHN'2007) [December 10-12, 2007; Paris, France] (International Federation for Information Processing (IFIP)) pg. 69-84.

New York

(2008)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Berl
Andreas Fischer
H. Meer
A. Galis
J. Rubio-Loyola

Management of Virtual Networks

In: Middleware technologies for enabling next generation network services and applications (Samos Island, Greece, 22nd - 26th September 2008; Proceedings of the 5th International Workshop on Next Generation Networking Middleware (NGNM 2008) and 4th IEEE/IFIP International Workshop on End-to-end Virtualization and Grid Management (EVGM 2008)). null (Multicon lecture note series) pg. 197-202.

Schöneiche bei Berlin

(2008)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

Andreas Fischer
Andreas Berl
H. Meer

Virtualized Networks based on System Virtualization

(2008)

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

A. Garcia
Andreas Berl
K. Hummel
R. Weidlich
A. Houyou
K. Hackbarth
H. Meer
H. Hlavacs

An Economical Cost Model for fair resource sharing in Virtual Home Environments

pg. 153-160.

(2008)

Elektrotechnik und Medientechnik

Zeitschriftenartikel

H. Hlavacs
K. Hummel
R. Weidlich
A. Houyou
Andreas Berl
H. Meer

Distributed Energy Efficiency in Future Home Environments

In: Annals of Telecommunications (Special issue: Next Generation Network and Service Management) vol. 63 pg. 473-485.

(2008)

Abstract anzeigen

In this paper, a new architecture for sharing resources among home environments is proposed. Our approach goes far beyond traditional systems for distributed virtualization, like PlanetLab or grid computing, as it relies on complete decentralization in a peer-to-peer (P2P) like manner and, above all, aims at energy efficiency. Energy metrics are defined, which have to be optimized by the system. The system itself uses virtualization to transparently move tasks from one home to another to optimally utilize the existing computing power. We present an overview of our proposed architecture, consisting of a middleware interconnecting computers and routers in possibly millions of homes using P2P techniques. For demonstrating the potential energy saving of distributed applications, we present an analytical model for sharing downloads, which is verified by discrete event simulation. The model represents an optimistic case without P2P overhead and fairness. The model allows to assess the upper limit of the saving potential. An enhanced version of the simulation model also shows the effect of fairness. The fairer the system gets, the less efficient it is.

Elektrotechnik und Medientechnik

Beitrag (Sammelband oder Tagungsband)

I. Dedinski
Andreas Berl
A. Hofmann
S. Heglmeier
Bernhard Sick
et al.

A Source Routing Solution to Non-Transitive Connectivity Problems in Distributed Hash Tables

pg. 601-608.

(2007)

Maschinenbau und Mechatronik

Zeitschriftenartikel

Andreas Berl
H. Meer

Mobility, Mobility Management Mechanisms, and a Mobile P2P Architecture

In: Transactions on Automated Control Systems vol. 1 pg. 179-186.

(2006)

Abstract anzeigen

Mobility management mechanisms are used to provide mobility. Different kinds of mobility requiredifferent mobility management mechanisms. Common P2P applications are designed for fixed networks. Applying mobility to P2P applications is still a research issue. There are some approaches to improve P2P overlay networks in order to support the mobility of users

Elektrotechnik und Medientechnik

projects

SmiLE, MAID and SMART-VHB, see below

labs

Deep Learning AI lab (THD, under Construction), Smart Grid lab (TC Freyung), WVDI lab (TC Freyung), Home Entertainment and Connectivity lab (THD)

core competencies

Electromobility and fleet management
Computer networks
Virtualisation and energy efficiency
Smart Grid

Vita

since 2021 Course coordinator for the Artificial Intelligence and Data Science master’s course
since 2019 Member of the examination committee of the department Applied Informatics / Infotronik.
since 2019 Member of the Faculty Council of the Faculty of Applied Computer Science
since 2019 Change to the department „Applied Informatics / Infotronik“.
since 2018 Research professorship, combined with a reduction in teaching to 9 SWS.
2015 - 2019 Member of the examination committee of the department Electrical Engineering, Media Technology, and Computer Science.
since 2015 Course Consultant of Applied Informatics / Infotronik.
since 2015: Professor for “Grundlagen der Informatik (Principles of computer science)” at the Deggendorf Institute of Technology, department of Electrical Engineering, Media Technology, and Computer Science.
2005-2015: Research, teaching and project work in national and international research projects at the department of computer networks and computer communications, University of Passau.
2011: PhD at the University of Passau, topic: „Energy Efficiency in Office Computing Environments“. Awarded with „Wissenschaftspreis der Universität Passau 2012“.
2009: Guest scientist at the Computing Department, Lancaster University, GB.
2000-2005: Studies of computer science and psychology, University of Passau.

Other

Projekts

Currently running projects

SmiLE - Smartes und integriertes Laden von Elektrofahrzeugen auf Firmenparkplätzen https://zaf.th-deg.de/public/project/183 Bayerische Forschungsstiftung 05/2020 - 04/2023 (3 years)
MAID - “Master Artificial Intelligence and Data Science” https://zaf.th-deg.de/public/project/114 EU, INTERREG 03/2019 - 07/2022 (3.5 years)
SMART-vhb - “Java Programming” Virtuelle Hochschule Bayern https://smart.vhb.org 09/2020 - 10/2021 (1 year)

Completed projects

CITRAM - “Citizen Science for Traffic Management” https://zaf.th-deg.de/public/project/101 BMVI - mFund 09/2018 - 11.2020 (2 years)
SMART-vhb - “Java Programming” Virtuelle Hochschule Bayern https://smart.vhb.org 09/2019 - 08/2020 (1 year)
Smart Grid - “Smart Grid-Technologien für ländliche Gebiete und KMUs” http://www.smartgrid.science EU, INTERREG 04/2017 - 03/2020 (3 years)
WVDI - “Workstation-based virtual desktop infrastructure” https://zaf.th-deg.de/public/project/54 Sonderforschungsprojekt der THD 01/2017 - 12/2018 (2 years)
Electrific - “Enabling seamless electromobility through smart vehicle-grid integration” https://www.electrific.eu EU, Horizon 2020 09/2016 - 08/2019 (3 years)

Teaching

Computer Science 1 (in MATLAB)
Computer Science 2 (in C)
Foundations of computer science
Introduction to programming (in C)
Java programming (in Java)
Object-oriented software technology (in Java)
Architectures for networked software systems
Network technology and IT networks
Project management
Programming 1 (in Java)
Programming 2 (in Java)