Search results for "object"

A Velocity Estimation Technique for a Monocular Camera Using mmWave FMCW Radars

2021

Perception in terms of object detection, classification, and dynamic estimation (position and velocity) are fundamental functionalities that autonomous agents (unmanned ground vehicles, unmanned aerial vehicles, or robots) have to navigate safely and autonomously. To date, various sensors have been used individually or in combination to achieve this goal. In this paper, we present a novel method for leveraging millimeter wave radar’s (mmW radar’s) ability to accurately measure position and velocity in order to improve and optimize velocity estimation using a monocular camera (using optical flow) and machine learning techniques. The proposed method eliminates ambiguity in optical flow veloci…

Pokémon GO 2016: Exploring Situational Contexts of Critical Incidents in Augmented Reality

2016

Pokémon GO, an augmented reality mobile game, captured the attention of millions of people around the world in July 2016. Various sources from around the globe have reported both positive and negative incidents and outcomes related to the game. Some of the incidents have been particularly remarkable for the player, i.e., critical incidents. A critical incident is a single experience, which a person perceives or remembers as unusually positive or negative. Critical incidents typically are highly influential for human behaviour, and thus, important to study. Playing augmented reality games can take place in varying situational contexts. Situational context includes information that can be use…

Eksotiikkaa vai ihmisarvoa: Opettajan monikulttuurisesta kompetenssista

2005

Maahanmuuttajien määrän lisääntyminen Suomessa 1990-luvulta lähtien ja samaan aikaan tapahtunut yhteiskunnallinen murros näkyvät koulun arjessa. Näiden asioiden myötä opettajan yhteiskunnallinen vastuu on lisääntynyt. Tutkimuksen tarkoituksena oli kartoittaa opettajien monikulttuurisia valmiuksia ylläpitää erilaisten oppijoiden arvokkuutta. Opettajan selkiintynyt minäkuva, arvomaailma ja ammatillisuus mahdollistavat myönteisen suhtautumisen elämään ja työhön. Opettajan työ helpottuu, jos koulun ilmapiiri tukee erilaisuuden hyväksymistä opettajien välisen, opettaja-oppilas -välisen sekä koulun ja vanhempien välisen avoimen vuorovaikutuksen kautta. Tutkimus on jatkotutkimus Talibin aikaisemma…

Curiosity and exploration: A conceptual overview and structural modeling

2001

Many attempts have been made to measure curiosity or intrinsic motivation. However, there is no consensus on what curiosity is. In the present study, five previously constructed curiosity inventories were translated to Finnish and modified to be convenient for fifth-graders. The main purpose of the study was to clarify the concept of curiosity. Using conceptual analysis and the results of previous studies, it was possible to construct nine alternative conceptual models of curiosity. The corresponding statistical models were expected to account for the covariances among 15 subscales measuring curiosity-related exploratory behavior. However, before proceeding to the subscale level, the struct…

Ylioppilastutkinnon, tavoiteorientaatioiden ja muiden motivaatiotekijöiden yhteys luokanopettajakoulutukseen hakeneiden menestymiseen VAKAVA-valintak…

2019

Tässä tutkimuksessa selvitettiin ylioppilastutkinnon yleisarvosanan, tavoiteorientaatioiden ja muiden motivaatiotekijöiden yhteyttä menestymiseen valtakunnallisessa kasvatusalan valintayhteistyöverkoston toteuttamassa opiskelijavalintakokeessa (VAKAVA). Tutkimukseen osallistuivat Jyväskylän yliopiston luokanopettajakoulutukseen pyrkineet hakijat vuosina 2014 ja 2015 (n = 399). Tutkimusaineisto koostui VAKAVAkoepistemääristä sekä hakijoiden itsearvioinneista, jotka liittyivät erilaisiin tavoiteorientaatioihin (oppimis-, saavutus-, suoritus-lähestymis-, suoritus-välttämis- ja välttämisorientaatio) sekä muihin motivaatiotekijöihin (kokemus opiskelun mielekkyydestä, luovutusherkkyys ja epäonnis…

Muistoihin kaivertuneet tilat : tutkimushanke mielisairaalamuistoista

2018

‘Cos I’m a Survivor’ : Narratives of coping and resilience in recollections of difficult childhood in post-war Finland

2018

In post-war Finland thousands of children experienced poor upbringing, neglect and abuse, and had to deal with their experiences without social support from adults. In this article we study how difficult and bitter experiences related to childhood crises are remembered, reinterpreted and reframed in later life and in contemporary Finland. As research material we use both oral and written reminiscences of childhood in the post-war years collected in the period 2014–2016. We argue that in the recollections of difficult childhood coping and resilience emerge as major narrative themes. Although informants in their childhood were forced to suffer in silence, they remember themselves as being res…

Pareto frontier in economic-statistical design of a dynamic c chart

2015

The present paper proposes an economic-statistical multi-objective design procedure for a dynamic c control chart. In detail, a mixed integer non-linear constrained mathematical model is formulated to solve the treated problem, whereas the Pareto frontier is described by the ε-constraint method. To show the employment of the proposed procedure a numerical case is solved and the related considerations are given.

An Hypervolume based constraint handling technique for multi-objective optimization problems

2011

Formulation of structural optimization problems usually leads to the individuation of one or more objective functions to be minimized under different constraints. Many multi-objective evolutionary algorithms are approached by a Pareto-compliant ranking method, where no a priori information on the problem is needed and the concept of non-dominated solutions is used. In this paper a constraint handling technique based on the concept of hypervolume indicator is presented. Initially proposed to compare different multi-objective algorithms hypervolume indicator is the only single set quality measure to reflects the dominance of solution’s sets. The constraint handling technique proposed use an e…

A multi-objective and multi-criteria approach for district metered area design: water operation and quality analysis

2019

Water distribution network (WDN) operation may be improved by district metered area (DMA) design [1]. A first step to create DMAs uses graph theory and non-supervised learning, where physical features of the WDN, such as node coordinates, elevation and demand, are used for clustering purposes [2]. A second step is related to the necessary isolation of the clustered elements. For isolation purposes, it is important to determine the DMA entrances and, consequently, the needed cut-off valves. Closure of pipes and definition of DMA entrances can be set as an optimization problem with the costs associated to the valves, which are linked to pipe diameters, as a primary objective. However, placeme…