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Rao, P.V. (author), Yin, F. (author), Grewe, V. (author), Yamashita, Hiroshi (author), Jöckel, Patrick (author), Matthes, Sigrun (author), Mertens, Mariano (author), Frömming, Christine (author)One possibility to reduce the climate impact of aviation is the avoidance of climate-sensitive regions, which is synonymous with climate-optimised flight planning. Those regions can be identified by algorithmic Climate Change Functions (aCCFs) for nitrogen oxides (NOx), water vapour (H2O) as well as contrail cirrus, which provide a measure of...journal article 2022
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Wu, L. (author), Rao, Siddharth (author), Taouil, M. (author), Marinissen, Erik Jan (author), Kar, Gouri Sankar (author), Hamdioui, S. (author)The manufacturing process of STT-MRAM requires unique steps to fabricate and integrate magnetic tunnel junction (MTJ) devices which are data-storing elements. Thus, understanding the defects in MTJs and their faulty behaviors are paramount for developing high-quality test solutions. This article applies the advanced device-aware test to...journal article 2022
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Marcelis, Paul J. (author), KOUVELAS, N. (author), Rao, V.S. (author), Venkatesha Prasad, Ranga Rao (author)Long-range wide-area network (LoRaWAN) is an energy-efficient and inexpensive networking technology that is rapidly being adopted for many Internet-of-Things applications. In this study, we perform extensive measurements on a new LoRaWAN deployment to characterise the spatio-temporal properties of the LoRaWAN channel. Our experiments reveal...journal article 2022
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Ghosh, Surjya (author), Pons Rodriguez, Gerard (author), Rao, Shruti (author), El Ali, Abdallah (author), Cesar, Pablo (author)While affective non-verbal communication between pedestrians and drivers has been shown to improve on-road safety and driving experiences, it remains a challenge to design driver assistance systems that can automatically capture these affective cues. In this early work, we identify users' emotional self-report responses towards commonly...conference paper 2022
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Gebregiorgis, A.B. (author), Wu, L. (author), Münch, Christopher (author), Rao, Siddharth (author), Tahoori, Mehdi B. (author), Hamdioui, S. (author)STT-MRAM has long been a promising non-volatile memory solution for the embedded application space owing to its attractive characteristics such as non-volatility, low leakage, high endurance, and scalability. However, the operating requirements for high-performance computing (HPC) and low power (LP) applications involve different challenges....conference paper 2022
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Rao, Ziyuan (author), Dutta, B. (author), Körmann, F.H.W. (author), Lu, Wenjun (author), Zhou, Xuyang (author), Liu, Chang (author), da Silva, Alisson Kwiatkowski (author), Wiedwald, Ulf (author), Spasova, Marina (author), Farle, Michael (author), Ponge, Dirk (author), Gault, Baptiste (author), Neugebauer, Jörg (author), Raabe, Dierk (author), Li, Zhiming (author)Since its first emergence in 2004, the high-entropy alloy (HEA) concept has aimed at stabilizing single- or dual-phase multi-element solid solutions through high mixing entropy. Here, this strategy is changed and renders such massive solid solutions metastable, to trigger spinodal decomposition for improving the alloys’ magnetic properties....journal article 2021
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Wu, L. (author), Rao, Siddharth (author), Taouil, M. (author), Marinissen, Erik Jan (author), Kar, Gouri Sankar (author), Hamdioui, S. (author)Understanding the defects in magnetic tunnel junctions (MTJs) and their faulty behaviors are paramount for developing high-quality tests for STT-MRAM. This paper characterizes and models intermediate (IM) state defects in MTJs; IM state manifests itself as an abnormal third resistive state, apart from the two bi-stable states of MTJ. We...conference paper 2021
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Wu, L. (author), Rao, Siddharth (author), Taouil, M. (author), Marinissen, Erik Jan (author), Kar, Gouri Sankar (author), Hamdioui, S. (author)Understanding the manufacturing defects in magnetic tunnel junctions (MTJs), which are the data-storing elements in STT-MRAMs, and their resultant faulty behaviors are crucial for developing high-quality test solutions. This paper introduces a new type of MTJ defect: synthetic anti-ferromagnet flip (SAFF) defect, wherein the magnetization in...conference paper 2021
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Venkatesha Prasad, Ranga Rao (author), Rao, V.S. (author), Sarkar, Chayan (author), Niemgeers, Ignas (author)It is a huge challenge to run IoT devices/sensors powered solely through ambient harvested energy. Since the harvested energy is less and is stochastic in nature, it is extremely challenging to achieve low latency and high reliability. To this end, we propose a distributed, energy-management module called ReNEW, using Constructive...journal article 2021
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Rao, Vivek (author), Moore, George (author), Jung, Hyun Jie (author), Kim, E.Y. (author), Agogino, Alice (author), Goucher-Lambert, Kosa (author)Increasingly digital products and services make cybersecurity a crucial issue for designers. However, human-centered designers struggle to consider it in their work, partially a consequence of the high psychological distance between designers and cybersecurity. In this work, we build on the Design for Cybersecurity (DfC) Cards, an...journal article 2021
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Gokhale, V. (author), Eid, Mohamad (author), Kroep, H.J.C. (author), Venkatesha Prasad, Ranga Rao (author), Rao, V.S. (author)The next frontier for immersive applications is enabling sentience over the Internet. Tactile Internet (TI) envisages transporting skills by providing ultra-low-latency (ULL) communications for transporting touch senses. In this work, we focus our study on the first/last mile communication, where the future generation WiFi-7 is pitched as the...journal article 2021
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Shruthi Kashyap, Shruthi (author), Rao, V.S. (author), Venkatesha Prasad, Ranga Rao (author), Staring, Toine (author)This chapter explains the Bridge Architecture for internet connectivity in detail. It describes the experimental setup used to study the architecture, discusses the two main challenges that this architecture presents and proposes solutions.book chapter 2021
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Shruthi Kashyap, Shruthi (author), Rao, V.S. (author), Venkatesha Prasad, Ranga Rao (author), Staring, Toine (author)This chapter discusses the comprehensive experimental evaluation of the Bridge Architecture by analyzing its performance based on latency, throughput, packet retransmissions, NFC bandwidth utilization, etc. for different NFC bit rates and data sizes. It also provides some recommendations for implementing this architecture.book chapter 2021
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Shruthi Kashyap, Shruthi (author), Rao, V.S. (author), Venkatesha Prasad, Ranga Rao (author), Staring, Toine (author)This chapter discusses two possible architectures to connect the cordless kitchen appliances to the Internet. Design, advantages and disadvantages of both these architectures are covered in detail.book chapter 2021
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Shruthi Kashyap, Shruthi (author), Rao, V.S. (author), Venkatesha Prasad, Ranga Rao (author), Staring, Toine (author)This research focused on enabling Internet connectivity to a new generation of smart kitchen appliances that work on wireless power technology. In order to provide efficient and seamless communication with the appliances, the possibilities of utilizing the NFC channel for Internet connectivity were explored.book chapter 2021
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Shruthi Kashyap, Shruthi (author), Rao, V.S. (author), Venkatesha Prasad, Ranga Rao (author), Staring, Toine (author)This chapter studies the existing research and solutions in using TCP/IP on low data-rate and high delay networks like NFC. It concludes that the problem on hand, i.e., using TCP/IP on time-slotted NFC in the cordless kitchen appliances, is unique and hence new novel methods are needed in this case.book chapter 2021
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Shruthi Kashyap, Shruthi (author), Rao, V.S. (author), Venkatesha Prasad, Ranga Rao (author), Staring, Toine (author)This chapter gives an introduction to the Cordless Kitchen concept, benefits and use cases. It throws light on the benefits of connecting cordless kitchen to the Internet and highlights the challenges involved in enabling Internet connectivity. A few possible solutions are also proposed.book chapter 2021
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Shruthi Kashyap, Shruthi (author), Rao, V.S. (author), Venkatesha Prasad, Ranga Rao (author), Staring, Toine (author)This chapter evaluates the effects of our solution on important TCP parameters such as TCP MSS, TCP CWND, NFC BER and other NFC channel characteristics using simulations and theoretical calculations.book chapter 2021
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Kouvelas, N. (author), Rao, V.S. (author), Venkatesha Prasad, Ranga Rao (author), Tawde, G.C. (author), Langendoen, K.G. (author)Long Range Wide Area Network (LoRaWAN) covers the needs of energy-constrained IoT-devices for operational longevity and extended communication range in a best-effort fashion. However, Lo- RaWAN’s minimalist design cannot handle the traffic from dense deployments with more than a few hundred devices connected to a single gateway, since each LoRa...conference paper 2020
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Rao, Vivek (author), Kim, E.Y. (author), Kwon, Jieun (author), Agogino, Alice M. (author), Goucher-Lambert, Kosa (author)Designers’ choices of methods are well known to shape project outcomes. However, questions remain about why design teams select particular methods and how teams’ decision-making strategies are influenced by project- and process-based factors. In this mixed-methods study, we analyze novice design teams’ decision-making strategies underlying 297...journal article 2020