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    Item type:Publication,
    Promises and risks in using LLMs in scientific review
    The current scientific peer review process faces increasing strain and is becoming difficult to sustain. While large language models (LLMs) can help reviewers by summarizing papers, assessing clarity, and generating timely feedback, the research community remains cautious about relying on LLM-based reviews. In this paper, we explore how LLMs could support and potentially improve parts of the peer review process. We examine both the benefits and limitations by analysing LLM-generated reviews of our own previously published papers, comparing them with human reviewer feedback, identifying points of agreement and disagreement, and considering requirements for the responsible and ethical use of LLMs in peer review.
    Publicationtype: Conference Paper
      25
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    Unforeseen silly errors in network simulations and visualizations
    Accurate network simulations are essential for meaningful research. Factors like incorrect parameterization, unsuitable KPIs, or overlooking key aspects in design and modeling may result in misleading conclusions, time- and resource-waste. In this paper, we share our genuine experiences from working with bachelor's, master's and PhD students, with the focus on three scenarios where distinct simulation errors commonly occur. The first two scenarios highlight cases of unjustifiable results, leading to investigations that uncovered "silly errors"in randomization and visualization. The third scenario, though properly modeled, failed to capture the overall picture needed to reflect real-world outcomes. By sharing these lessons learned across experience levels using packet level network simulations, we aim to help students and researchers achieve more credible results while saving valuable time.
    Publicationtype: Conference Paper
      106
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    Item type:Publication, Access status: with files ,
    Wireless seismic data acquisition networks
    Publicationtype: Doctoral Thesis
      2  73
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    Item type:Publication, Access status: with files ,
    Designing problem-based learning cases to foster student engagement in STEM
    We all recognize the effectiveness of problem-based learning (PBL) in engaging everyone and helping students develop critical thinking and teamwork skills. PBL was developed to make medicine students ready to work under real life conditions. Therefore, since the 50s there have been several cases for medicine scenarios being published. In the STEM field it is still not common to use this method, which is quite unfortunate. Therefore, we have chosen to share how we implement PBL to teach Communication Networks to master’s students. In this paper, we will present our experiences in designing new PBL cases, alongside feedback from our Center for Teaching and Learning (ZLL). These cases reflect current trends in key topics related to communication networks, our engagement strategies, and the student feedback we have received during the winter semester 2024/25.
    Publicationtype: Conference Paper
      50  43
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    Item type:Publication, Access status: with files ,
      108  30
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    Modeling and evaluation of geophone energy consumption in wireless seismic data acquisition networks
    Impediments associated with cable-based seismic data acquisition (SDA) have led to increased interest in enabling reliable wireless seismic data acquisition (WSDA)systems. As the SDA process can last for several days or weeks, it is imperative to ensure geophones remain active for extended data acquisition periods without frequent recharging or battery replacements. This paper presents an evaluation of geophone energy consumption based on a proposed IEEE 802.11-based WSDA network architecture operating in ad hoc mode that employs Routing Protocol for Low-Power and Lossy Networks (RPL). The evaluation was carried out using simulation in OMNeT++ simulator employing metrics like percentage energy consumed and network lifetime. Results show that geophones can operate continuously for up to a month, with energy consumption primarily influenced by geophone hardware specifications, especially the radio or transceiver unit and battery capacity. In addition, we present an analytical model that estimates geophone energy consumption based on the proposed architecture. The model is an extension of our proposed IEEE 802.11 Distributed Coordination Function (DCF) model, incorporating geophone radio hardware specifications. The model was validated using simulations in the OMNeT++ simulator.
    Publicationtype: Conference Paper
      60
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    Evaluation of IEEE 802.11 ad hoc-based wireless seismic data acquisition networks
    (Association for Computing Machinery (ACM), 2023-10-30) ; ;
    This paper investigates the performance of a proposed IEEE 802.11 ad hoc-based wireless seismic data acquisition (WSDA) network architecture. The study centers on examining the network performance in the 2.4 and 5 GHz bands with focus on addressing WSDA challenges such as scalability, reliability, self-configuration and organization, interference effects, and latency. Routing Protocol for Low-Power and Lossy Networks (RPL) is used as the enabling routing protocol employing the multiple Destination Oriented Directed Acyclic Graph (multi-DODAG) architecture. OMNeT++ discrete event simulator is used to evaluate the network performance, using metrics such as packet delivery ratio (PDR), end-to-end delay (E2ED), packet error rate (PER), retransmission ratio, packet dropped, etc. Results show that the proposed network architecture is scalable and reliable with large number of geophones in the network. In addition, Routing Protocol for Low-Power and Lossy Networks (RPL) proves to be a suitable candidate to enable self-configuration and organization in multi-hop ad hoc WSDA networks.
    Publicationtype: Conference Paper
      84
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    Analysis of the IEEE 802.11 DCF for Wireless Seismic Data Acquisition Networks
    Owing to the nature of traffic and architecture of Wireless Seismic Data Acquisition (WSDA) networks also referred to as Wireless Geophone Networks (WGN), we propose a model that analytically investigates the performance of IEEE 802.11 protocol for single-hop ad hoc WGNs under unsaturated traffic and non-ideal channel conditions. Although several IEEE 802.11 models have been presented in literature, some inaccuracies exist with respect to modeling IEEE 802.11-based WGNs. Our model focuses primarily on singling out the inaccuracies in modeling the backoff procedure and packet drop probability as some of the deviance with the existing literature. Expressions for MAC delay, throughput, collision probability, and average duration a node spends during the backoff procedure before decrementing its counter were proposed. Furthermore, the model investigates an optimal number of geophones that could be supported within a subnetwork based on the proposed WGN architecture in [16]. The model was evaluated analytically in MATLAB and validated using simulation in OMNeT++ discrete event simulator.
    Publicationtype: Conference Paper
      107
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    Item type:Publication, Access status: with files ,
    Wireless geophone networks for land seismic data acquisition: a survey, tutorial and performance evaluation
    (Multidisciplinary Digital Publishing Institute (MDPI), 2021-07-30) ; ;
    Seismic data acquisition in oil and gas exploration employs a large-scale network of geophone sensors deployed in thousands across a survey field. A central control unit acquires and processes measured data from geophones to come up with an image of the earth’s subterranean structure to locate oil and gas traps. Conventional seismic acquisition systems rely on cables to connect each sensor. Although cable-based systems are reliable, the sheer amount of cable required is tremendous, causing complications in survey logistics as well as survey downtime. The need for a cable-free seismic data acquisition system has attracted much attention from contractors, exploration companies, and researchers to lay out the enabling wireless technology and architecture in seismic explorations. This paper gives a general overview of land seismic data acquisition and also presents a current and retrospective review of the state-of-the-art wireless seismic data acquisition systems. Furthermore, a simulation-based performance evaluation of real-time, small-scale wireless geophone subnetwork is carried out using the IEEE 802.11 g technology based on the concept of seismic data acquisition during the geophone listen or recording period. In addition, we investigate an optimal number of seismic samples that could be sent by each geophone during this period.
    Publicationtype: Journal Article
    Scopus© Citations 12  295  339
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    Item type:Publication, Access status: with files ,
    Evaluation of multi-hop ad-hoc routing protocols in wireless seismic data acquisition
    (Technische Universität Berlin, 2021) ; ; ;
    Due to impediments associated with cable-based seismic survey, Wireless Seismic Data Acquisition (WSDA) has recently gained much attention from contractors, exploration companies, and researchers to layout enabling wireless technology and architecture for Wireless Geophone Networks (WGN) in seismic explorations. A potential approach is to employ multi-hop wireless ad-hoc communication. In this study, we propose a multi-hop WGN architecture consisting of several subnetworks to realize the expected network performance. We investigate the performance of proactive and reactive routing protocols to examine the optimal number of geophones that could be effectively supported within a subnetwork. The performance metrics used are packet delivery ratio (PDR) and average end-to-end delay.
    Publicationtype: Journal Article
    Scopus© Citations 2  216  284