Search results for "Boom"

showing 5 items of 45 documents

Numerical and Experimental Study of a Novel Concept for Hydraulically Controlled Negative Loads

2016

This paper presents a numerical and experimental investigation of a novel concept that eliminates oscillations in hydraulic systems containing a counterbalance valve in series with a pressure compensated flow supply. The concept utilizes a secondary circuit where a low-pass filtered value of the load pressure is generated and fed back to the compensator of the flow supply valve. The novel concept has been implemented on a single boom actuated by a cylinder. A nonlinear model of the system has been developed and an experimental verification shows good correspondence between the model and the real system. The model is used for a parameter study on the novel concept. From the study it is found…

pressure compensated valveEngineeringSeries (mathematics)business.industrySecondary circuitStructural engineeringBoomlcsh:QA75.5-76.95Computer Science Applicationscounterbalance valveinstabilities in hydraulic systemsload-holding applicationControl and Systems EngineeringControl theoryModeling and SimulationNonlinear modelnonlinear modelCylinderDirectional Valvelcsh:Electronic computers. Computer scienceHydraulic machinerybusinessReduction (mathematics)SoftwareModeling, Identification and Control
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A social work perspective to the neoliberal mining boom in Finland and the possibility of an ecosocial response

2018

sosiaalityöSocial workecosocial transitionPolitical sciencePolitical economyPerspective (graphical)Suomiekososiaalinen siirtymäuusliberalismiBoomneoliberalismiFinlandkaivosteollisuus
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Behind the scenes of artificial intelligence: a study of micro-work platforms in France

2019

Este artículo es una versión resumida del informe “Le Micro-travail en France. Derrière l’automatisation de nouvelles précarités au travail?» This article is a summarized version of the report "Le Micro-travail en France. Derrière l’automatisation de nouvelles précarités au travail?" .; International audience; Micro-work internet services allocate small, standardized tasks of data generation and annotation to crowds of providers. The outputs are mainly used to produce artificial intelligence solutions. It is an exemplary instance of the “platformization” of the economy, and of the transformations of labour that digital technologies bring about. To uncover the conditions under which micro-wo…

standardized tasks of data generation and annotation to crowds of providers. The outputs are mainly used to produce artificial intelligence solutions. It is an exemplary instance of the ?platformization? of the economyinteligencia artificialwithout adequate protection and with only limited opportunities to voice issues or seek advice. Especially as the current boom of artificial intelligence raises demand for their servicesPaolawe use the data collected to present the socio-economic backgrounds of the people who engage in micro-workmicro-workClémentand the general public. This article is a summarized version of the report ?Le Micro-travail en France. Derrière l?automatisation de nouvelles précarités au travail?» trabajo digitaltrabajo digitaltheir motivations and needsUNESCO::SOCIOLOGÍAwhile the micro-working population is very diverseand its broader societal implicationsLe Ludecwe conducted an extensive empirical study in France. In this paperand of the transformations of labour that digital technologies bring about. To uncover the conditions under which micro-work is performedmicro-trabajoElinor Micro-work internet services allocate small[SHS.SOCIO]Humanities and Social Sciences/SociologyWahal1137-7038 8537 Arxius de sociologia 558787 2019 41 7605683 En la trastienda de la inteligencia artificial. Una investigación sobre las plataformas de micro-trabajo en francia Casillia significant portion (including working women with children and with higher education degrees) face pressing financial needs and rely on this activity to make ends meet. Micro-workers are also exposed to distinctive psycho-social risksTubaro:SOCIOLOGÍA [UNESCO]artificial intelligenceand their everyday practices. We show thatartificial intelligence 87 107unionseconomía de plataformasdigital labourtheir working conditions call for attention from policy-makersAntonio A.platform economy
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Practice for determining friction in hydraulic winch systems

2020

This paper presents a method for estimating friction in hydraulic active heave compensated (AHC) offshore winches. The method is a two-step approach where the first step is to model the friction loss in the hydraulic motors based on data from the sub-supplier. The second step requires real-life testing, where the remaining friction losses in the winch system is identified and modeled. In this context, a practice is characterized by obtaining a friction loss estimation with the highest possible accuracy over the widest possible range of operating conditions with a limited amount of experimental work. The method benefits from the use of parametric models, sub-supplier data, and real-life meas…

winch systemEngineeringbusiness.industrytorque losshydraulicslcsh:QA75.5-76.95Computer Science ApplicationsControl and Systems EngineeringModeling and Simulationlcsh:Electronic computers. Computer scienceoffshore knuckle boom cranesWinchbusinessSoftwareMarine engineeringModeling, Identification and Control: A Norwegian Research Bulletin
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"Baby boomer" un Z paaudzes raidījumu par paranormālām parādībām lietojums un apmierinājums

2022

Bakalaura darba “”Baby boomer” un Z paaudzes raidījumu par paranormālām parādībām lietojums un apmierinājums” mērķis ir izpētīt raidījuma “Ekstrasensu cīņas” 22.sezonas saturu, kā arī uzzināt Baby boomer un Z paaudzes pārstāvju raidījumu par paranormālām parādībām uztveri. Izpētīta paaudžu teorija un mediju lietojuma un apmierinājuma teorija, kā arī tika apskatīts, kas ir Baby boomer paaudze, kas ir Z paaudze, kādi līdzīgi šim pētījumi tika veikti, cik aktuāli ir televīzijā raidījumi par paranormālo un, kas piesaista auditoriju skatīties raidījumus par paranormālām parādībām. Metodoloģiskajā daļā tika apskatīts, kas ir intervija un padziļinātā intervija, kā arī tika izpētīts, kas ir kontent…

“Ekstrasensu cīņas”paaudzesKomunikācijas zinātneBaby boomerZ paaudzemediju lietojums un apmierinājums
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