Simon Hollis
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View article: Toward a Talanoa Way of Knowing: Relational Transformation for Environmental Sustainability and Climate Action
Toward a Talanoa Way of Knowing: Relational Transformation for Environmental Sustainability and Climate Action Open
This research note advances the idea of a talanoa epistemology. Many readers will be familiar with talanoa as an Indigenous mode of communication practiced in the Pacific. Variations of talanoa have been applied in COP constellations, inte…
View article: The Reality of Contingency: Implications for Crisis Management
The Reality of Contingency: Implications for Crisis Management Open
We live in a time of overwhelming uncertainty. Whether it is the consequences of the 2025 global trade war, the war in Ukraine, the outbreak of new pandemics, the validity of knowledge, or the possible extinction of humans as a species, th…
View article: A climate change talanoa: exploring creative possibilities for a hopeful future
A climate change talanoa: exploring creative possibilities for a hopeful future Open
This article explores creative possibilities for climate action through talanoa (a form of dialogue practised in the Pacific Islands). Built on inter-subjective empathy, the dignity of persons and reciprocal justice, engaging in a talanoa …
View article: Contingency, crises & disasters: Broadening the research agenda
Contingency, crises & disasters: Broadening the research agenda Open
The idea of contingency emphasizes uncertainty, the consequences of choice as well as our dependence on persons and events outside our control and ability to comprehend. The concept is thus integral to how we define and understand disaster…
View article: Disasters in the Anthropocene: a storm in a teacup?
Disasters in the Anthropocene: a storm in a teacup? Open
Dramatic alterations to the natural environment due to human activity have produced a permanent rupture in the Earth system; the relative stable epoch of the Holocene has given way to a volatile Anthropocene. Acceptance of these claims mea…
View article: COLA-Gen: Active Learning Techniques for Automatic Code Generation of Benchmarks
COLA-Gen: Active Learning Techniques for Automatic Code Generation of Benchmarks Open
Benchmarking is crucial in code optimization. It is required to have a set of programs that we consider representative to validate optimization techniques or evaluate predictive performance models. However, there is a shortage of available…
View article: Pulse-based, on-chip interconnect
Pulse-based, on-chip interconnect Open
This thesis describes the development of an on-chip point-to-point link, with particular emphasis on the reduction of its global metal area footprint. To reduce its metal footprint, the interconnect uses a serial transmission approach. 8-b…
View article: Full Custom Design of an Arbitrary Waveform Gate Driver With 10-GHz Waypoint Rates for GaN FETs
Full Custom Design of an Arbitrary Waveform Gate Driver With 10-GHz Waypoint Rates for GaN FETs Open
Active gate driving of power devices seeks to shape switching trajectories via the gate, for example, to reduce EMI without degrading efficiency. To this end, driver ICs with integrated arbitrary waveform generators have been used to achie…
View article: A New Design Technique for Sub-Nanosecond Delay and 200 V/ns Power Supply Slew-Tolerant Floating Voltage Level Shifters for GaN SMPS
A New Design Technique for Sub-Nanosecond Delay and 200 V/ns Power Supply Slew-Tolerant Floating Voltage Level Shifters for GaN SMPS Open
Dual-output gate drivers for switched-mode power supplies require low-side reference signals to be shifted to the switch-node potential. With the move to ultra-fast switching GaN converters, there is a commercial need to achieve switch-nod…
View article: A 6.7-GHz Active Gate Driver for GaN FETs to Combat Overshoot, Ringing, and EMI
A 6.7-GHz Active Gate Driver for GaN FETs to Combat Overshoot, Ringing, and EMI Open
Active gate driving has been demonstrated to beneficially shape switching waveforms in Si- and SiC-based power converters. For faster GaN power devices with sub-10-ns switching transients, however, reported variable gate driving has so far…
View article: Shaping switching waveforms in a 650 V GaN FET bridge-leg using 6.7 GHz active gate drivers
Shaping switching waveforms in a 650 V GaN FET bridge-leg using 6.7 GHz active gate drivers Open
The application of active gate driving to 40 V GaN FETs has previously been shown to reduce ringing and EMI-generating spectral content in the switch-node voltage waveforms. This paper, for the first time, shows active gate driving applied…
View article: Design of 370-ps Delay Floating-Voltage Level Shifters With 30-V/ns Power Supply Slew Tolerance
Design of 370-ps Delay Floating-Voltage Level Shifters With 30-V/ns Power Supply Slew Tolerance Open
A new design method for producing high-performance and power-rail slew-tolerant floating-voltage level shifters is presented, offering increased speed, reduced power consumption, and smaller layout area compared with previous designs. The …
View article: Overview of Swallow --- A Scalable 480-core System for Investigating the Performance and Energy Efficiency of Many-core Applications and Operating Systems
Overview of Swallow --- A Scalable 480-core System for Investigating the Performance and Energy Efficiency of Many-core Applications and Operating Systems Open
We present Swallow, a scalable many-core architecture, with a current configuration of 480 x 32-bit processors. Swallow is an open-source architecture, designed from the ground up to deliver scalable increases in usable computational power…
View article: Optimizing the flash-RAM energy trade-off in deeply embedded systems
Optimizing the flash-RAM energy trade-off in deeply embedded systems Open
Deeply embedded systems often have the tightest constraints on energy consumption, requiring that they consume tiny amounts of current and run on batteries for years. However, they typically execute code directly from flash, instead of the…
View article: Optimizing the flash-RAM energy trade-off in deeply embedded systems
Optimizing the flash-RAM energy trade-off in deeply embedded systems Open
Deeply embedded systems often have the tightest constraints on energy consumption, requiring that they consume tiny amounts of current and run on batteries for years. However, they typically execute code directly from flash, instead of the…
View article: The Role of Regional Organizations in Disaster Risk Management: A Strategy for Global Resilience
The Role of Regional Organizations in Disaster Risk Management: A Strategy for Global Resilience Open
The Role of Regional Organizations in Disaster Risk Management : A Strategy for Global Resilience