Browsing University of Hertfordshire by Title
Now showing items 19470-19489 of 24544
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Robots that say 'no'
(2011-01-01)This paper reports on foundational considerations for experiments into the acquisition of human-like use and understanding of negation in linguistic utterances via a developmental robotics approach. For this purpose different ... -
Robots that Say ‘No’. Affective Symbol Grounding and the Case of Intent Interpretations
(2018-09-01)Modern theories on early child language acquisition tend to focus on referential words, mostly nouns, labeling concrete objects, or physical properties. In this experimental proof-of-concept study, we show how nonreferential ... -
Robots that Say ’No’: Acquisition of Linguistic Behaviour in Interaction Games with Humans
(2013-12-20)Negation is a part of language that humans engage in pretty much from the onset of speech. Negation appears at first glance to be harder to grasp than object or action labels, yet this thesis explores how this family of ... -
Robust and Low-Complexity Timing Synchronization for DCO-OFDM LiFi Systems
(2018-01-01)Light fidelity (LiFi), using light emitting devices such as light emitting diodes (LEDs) which are operating in the visible light spectrum between 400 and 800 THz, provides a new layer of wireless connectivity within ... -
A Robust Control Approach for Frequency Support Capability of Grid-Tie Photovoltaic Systems
(2023-04-30)Distributed solar photovoltaic (PV) generation is growing rapidly around the world. However, unlike conventional synchronous generators, PV systems do not have any rotating masses to deliver inertia to support the grid ... -
Robust Control Design for a Dynamical System with Hard Nonlinearities : Application to Friction Compensation in a Robot Joint
(2009)A new methodology to design an optimal state feedback controlled to solve problems mainly caused by the presence of nonlinearities in motion control systems. Usually these nonlinearities are isolated, modeled and compensated ... -
Robust Control of Series Active Power Filters for Power Quality Enhancement in Distribution Grids: Simulation and Experimental Validation
(2020-07-22)This paper presents a simulation study and an experimental implementation of a single-phase Series Active Power Filter (SAPF) for the mitigation of harmonics in the load voltage. The aim is to regulate the injection voltage ... -
Robust detection of quasi-periodic variability : A HAWKI mini survey of late T dwarfs
(2017-05-01)We present HAWK-I J-band light curves of five late-type T dwarfs (T6.5-T7.5) with a typical duration of four hours, and investigate the evidence for quasi-periodic photometric variability on intra-night timescales. Our ... -
A Robust Dirichlet Reputation and Trust Evaluation of Nodes in Mobile Ad Hoc Networks
(2022-01-12)The distributed nature of mobile ad hoc networks (MANETs) presents security challenges and vulnerabilities which sometimes lead to several forms of attacks. To improve the security in MANETs, reputation and trust management ... -
A Robust Document Identification Framework through f-BP Fingerprint
(2021-07-29)The identification of printed materials is a critical and challenging issue for security purposes, especially when it comes to documents such as banknotes, tickets, or rare collectable cards: eligible targets for ad hoc ... -
Robust energy disaggregation using appliance-specific temporal contextual information
(2020-02-11)An extension of the baseline non-intrusive load monitoring approach for energy disaggregation using temporal contextual information is presented in this paper. In detail, the proposed approach uses a two-stage disaggregation ... -
Robust Field-level Likelihood-free Inference with Galaxies
(2023-07-18)We train graph neural networks to perform field-level likelihood-free inference using galaxy catalogs from state-of-the-art hydrodynamic simulations of the CAMELS project. Our models are rotational, translational, and ... -
A robust high-efficiency cross-coupled charge pump circuit without blocking transistors
(2018-06-01)A fully integrated cross-coupled charge pump circuit with a new clock scheme has been presented in this paper. The new clock scheme ensures that all NMOS pre-charge transistors are turned off when the voltages of main clock ...