FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2604808946> ?p ?o ?g. }

• W2604808946 abstract "The nunchaku (also known as nunchucks), an exotic weapon popularised by Bruce Lee in his famous martial arts films, was adopted in the 80s as the centre piece in a dynamic martial art (nunchaku-do), founded by a small Dutch group of enthusiasts led by Milco Lambrecht. Due to the high speed of match play nunchaku-do, its referees experience problems when observing scores, and determining who struck first, especially in the case of near-simultaneous scoring attempts. Evidently, referees have insufficient tools at their disposal to let transparent sports justice be done. There is therefore significant potential for the deployment of smart materials and sensor technology as decision aids to bridge this gap. A series of experiments and tinkering exercises was staged, to refine a list of eligible sensor technologies, and what they need in order to perform reliably. These activities revealed that tactile sensors and inertial sensors offered the most promise for detecting the impacts from a player’s attempted score. This inspired the formation of three potential design directions that made use of these technologies. One of these directions was developed further, leading to a sophisticated suggestion for a custom pressure sensor matrix which is integrated in a traditional safety nunchaku’s handles, effectively turning it into a smart nunchaku. This embedded sensor, boasting an array of pressure-sensitive points instead of only one large area, detects differences in the types of contact it makes, enabling it to recognise strikes, (re)grips, and blocks, for the referee’s benefit. A small microcontroller, paired with a wireless transmitter, relays these conclusions to a master device, which relays the information to referees, who are then able to better make their calls. This intermediary feedback could be seen as an additional sense for the referee, rather than a device that attempts to claim or override the referee’s ontological authority. A series of iterative prototypes for the proposed design’s sensor were developed to test the sensor's performance. A first proof of concept was developed on a smaller scale, and confirmed that the pressure sensor could provide reliable and consistent output values. A second, full-scale version of the pressure sensor matrix was successfully embedded in a safety nunchaku, keeping the original materials intact as much as possible. A battery-powered microcontroller with the capacity to wirelessly broadcast sensor data over Bluetooth was mounted to the experimental nunchaku, to record, process, and transmit recorded sensor data. To assess how well the proposed sensor can distinguish strikes, regrips, blocks, and failed regrips, these actions were all performed and recorded in a test setup, using the constructed full-scale prototype. A high speed camera was used to record video in tandem with the sensor, so that the values obtained could be carefully compared to the camera’s frame data. The sensor’s ability to separate (re)grips from strikes (score attempts), which is by far the most essential feature needed for the sensor to perform as a decision aid, was confirmed through the experiment, though the pattern behind grips turned out to be different than had been predicted earlier. Estimation of a strike’s contact surface area and force proved feasible, perhaps even to the extent of being able to reliably detect blocked strikes. Failed regrips, where a practitioner attempts a regrip but fails to clutch the nunchaku’s handle, could not be distinguished from strikes. These observations resulted in an updated and experimentally verified pressure event distinction heuristic. A series of calibrations and vector calculations were performed on raw sensor data, in order to judge the pressure sensor matrix’ ability to determine a resultant force over time. This resultant over time would be considered indicative of the force a fighter has put behind an individual scoring attempt. Though the sensor appears to have the required operational range and resolution to establish this metric, further tests are needed to verify its applicability in terms of establishing an accepted force range for players’ strikes. The technology behind the sensor could also prove useful for many other situations where specific types of pressure are to be identified, especially considering the affordable, maker-friendly properties of the materials used." @default.
• W2604808946 created "2017-04-14" @default.
• W2604808946 creator A5070828552 @default.
• W2604808946 date "2016-01-01" @default.
• W2604808946 modified "2023-09-26" @default.
• W2604808946 title "Improving Score Arbitration in the Combat Sport Nunchaku-do" @default.
• W2604808946 hasPublicationYear "2016" @default.
• W2604808946 type Work @default.
• W2604808946 sameAs 2604808946 @default.
• W2604808946 citedByCount "0" @default.
• W2604808946 crossrefType "journal-article" @default.
• W2604808946 hasAuthorship W2604808946A5070828552 @default.
• W2604808946 hasConcept C100776233 @default.
• W2604808946 hasConcept C105339364 @default.
• W2604808946 hasConcept C107457646 @default.
• W2604808946 hasConcept C115903868 @default.
• W2604808946 hasConcept C126322002 @default.
• W2604808946 hasConcept C127413603 @default.
• W2604808946 hasConcept C141715002 @default.
• W2604808946 hasConcept C142362112 @default.
• W2604808946 hasConcept C153349607 @default.
• W2604808946 hasConcept C154945302 @default.
• W2604808946 hasConcept C38652104 @default.
• W2604808946 hasConcept C41008148 @default.
• W2604808946 hasConcept C71924100 @default.
• W2604808946 hasConceptScore W2604808946C100776233 @default.
• W2604808946 hasConceptScore W2604808946C105339364 @default.
• W2604808946 hasConceptScore W2604808946C107457646 @default.
• W2604808946 hasConceptScore W2604808946C115903868 @default.
• W2604808946 hasConceptScore W2604808946C126322002 @default.
• W2604808946 hasConceptScore W2604808946C127413603 @default.
• W2604808946 hasConceptScore W2604808946C141715002 @default.
• W2604808946 hasConceptScore W2604808946C142362112 @default.
• W2604808946 hasConceptScore W2604808946C153349607 @default.
• W2604808946 hasConceptScore W2604808946C154945302 @default.
• W2604808946 hasConceptScore W2604808946C38652104 @default.
• W2604808946 hasConceptScore W2604808946C41008148 @default.
• W2604808946 hasConceptScore W2604808946C71924100 @default.
• W2604808946 hasLocation W26048089461 @default.
• W2604808946 hasOpenAccess W2604808946 @default.
• W2604808946 hasPrimaryLocation W26048089461 @default.
• W2604808946 hasRelatedWork W1544168109 @default.
• W2604808946 hasRelatedWork W1569613094 @default.
• W2604808946 hasRelatedWork W1579687620 @default.
• W2604808946 hasRelatedWork W1626913951 @default.
• W2604808946 hasRelatedWork W1993257682 @default.
• W2604808946 hasRelatedWork W2173309034 @default.
• W2604808946 hasRelatedWork W234274636 @default.
• W2604808946 hasRelatedWork W2344007565 @default.
• W2604808946 hasRelatedWork W2401725994 @default.
• W2604808946 hasRelatedWork W2557512675 @default.
• W2604808946 hasRelatedWork W2734682798 @default.
• W2604808946 hasRelatedWork W2915261800 @default.
• W2604808946 hasRelatedWork W2943909162 @default.
• W2604808946 hasRelatedWork W2946115539 @default.
• W2604808946 hasRelatedWork W2958475207 @default.
• W2604808946 hasRelatedWork W3193396842 @default.
• W2604808946 hasRelatedWork W326577488 @default.
• W2604808946 hasRelatedWork W4288431 @default.
• W2604808946 hasRelatedWork W2805350413 @default.
• W2604808946 hasRelatedWork W2879598939 @default.
• W2604808946 isParatext "false" @default.
• W2604808946 isRetracted "false" @default.
• W2604808946 magId "2604808946" @default.
• W2604808946 workType "article" @default.