Search results for "recognition"

Curvelet-based method for orientation estimation of particles

2013

A method based on the curvelet transform is introduced for estimating from two-dimensional images the orientation distribution of small anisotropic particles. Orientation of fibers in paper is considered as a particular application of the method. Theoretical aspects of the suitability of this method are discussed and its efficiency is demonstrated with simulated and real images of fibrous systems. Comparison is made with two traditionally used methods of orientation analysis, and the new curvelet-based method is shown to perform clearly better than these traditional methods.

Opettajat lukivaikeusriskin tunnistajina koulupolun alussa

2019

It’s Not Only What You Say, But How You Say It : Investigating the Potential of Prosodic Analysis as a Method to Study Teacher’s Talk

2018

In this study, we introduce new insights into prosodic analyses as an emerging method to study what happens in classrooms interactions. We claim that the prosodic aspects (features of speech such as intonation, volume and pace) of talk are important, but under-represented in the learning sciences. These prosodic aspects may be used to complement, intensify or even reverse the linguistic content of speech. Thus far, most research on classrooms has focused on the content (what is said) rather than on understanding the meaning of the prosodic features (how it is said) of talk. In this study, we introduce prosodic analyses as a method to study classroom discussions. Our exploratory experiment f…

The use of phonemic transcriptions as a teaching method and its effects on language learning outcomes

2009

 Kirjaimet ainoastaan kuvaavat kieltä. Äänteet ovat se, mitä todella kuulemme. Virheelliset ääntämistottumukset jättävät aivoihin harhaanjohtavia muistijälkiä ja edistävät näin väärinymmärrysten syntymistä. Tämä puolestaan voi johtaa siihen, että henkilö pidättäytyy puhumasta vierasta kieltä, minkä seurauksena on edistymisen hidastuminen. Oheisen tutkimuksen tarkoituksena on selvittää, voisiko foneettisen tarkekirjoituksen käytöllä opetusmenetelmänä olla myönteisiä vaikutuksia oppimistuloksiin. Tutkielmassa tarkastellaan oikeiden ääntämistottumusten roolia kieltenopiskelussa. Siinä luodaan myös katsaus aikaisempiin kokemuksin foneettisen tarkekirjoituksen pedagogisesta käytöstä. Lopuksi esi…

Performance of Lead-Acid Batteries with Nanostructured Electrodes at Different Temperature

2018

In this work we present innovative lead-acid batteries with nanostructured electrodes, which are cycled in a wide range of temperatures typically of lead-acid commercial batteries (EN 61427-1: 2013). In comparison to parameters usually used to commercial batteries, much more stressful conditions in terms of cut-off, charge/discharge rate and discharge were imposed.

On the Choice of the Extracellular Vesicles for Therapeutic Purposes

2019

Extracellular vesicles (EVs) are lipid membrane vesicles released by all human cells and are widely recognized to be involved in many cellular processes, both in physiological and pathological conditions. They are mediators of cell-cell communication, at both paracrine and systemic levels, and therefore they are active players in cell differentiation, tissue homeostasis, and organ remodeling. Due to their ability to serve as a cargo for proteins, lipids, and nucleic acids, which often reflects the cellular source, they should be considered the future of the natural nanodelivery of bio-compounds. To date, natural nanovesicles, such as exosomes, have been shown to represent a source of diseas…

Second and foreign language fluency from a cognitive perspective : inefficiency and control of attention in lexical access

2017

The present dissertation focuses on the fluency of second and foreign language (L2). Second and foreign language use is often assessed by its fluency. However, the connections between language proficiency and fluency are far from clear. The fluency reasearch has tried to establish these connections, but results are varied. In the current thesis, this question is explored within the theoretical framework of Norman Segalowitz’s division of three types of fluency: cognitive, utterance, and perceived fluency. The overall proposition here is that in relation to L2 proficiency, cognitive fluency provides important insights. This is based on the theories of limited cognitive resources, which state…

Prosody and fluency of Finland Swedish as a second language: Investigating global parameters for automated speaking assessment

2023

This study investigates prosody and fluency of Finland Swedish as a second language (L2). The main objective is to investigate global measures of prosody and fluency as predictors of overall oral proficiency, fluency, and pronunciation ratings. We analyzed parameters related to temporal fluency, timing (based on syllable durations), and f0 change from spontaneous speech produced by 30 native and 235 non-native speakers of Finland Swedish representing proficiency levels from beginner to intermediate. We used pairwise comparisons to investigate the differences between native speech (L1) and L2 samples from different proficiency levels. To study the predictability of ratings with acoustic para…

AI Ethics in Industry: A Research Framework

2019

Artificial Intelligence (AI) systems exert a growing influence on our society. As they become more ubiquitous, their potential negative impacts also become evident through various real-world incidents. Following such early incidents, academic and public discussion on AI ethics has highlighted the need for implementing ethics in AI system development. However, little currently exists in the way of frameworks for understanding the practical implementation of AI ethics. In this paper, we discuss a research framework for implementing AI ethics in industrial settings. The framework presents a starting point for empirical studies into AI ethics but is still being developed further based on its pr…

Tune recognition from melody, rhythm and harmony

2009

Earlier studies have shown that listeners recognise familiar tunes. With tunes that are manipulated in some way, melody has been shown to be more important for recognition than rhythm. The present study examined the importance of melody, rhythm and harmony for tune recognition by listeners with varying musical expertise. Forty-six participants, divided into three groups according to their musical expertise, heard the first two phrases of familiar tunes in four different versions: melody, rhythm, melody with harmony and rhythm with harmony. The participants were asked to identify the tunes. A two-factor ANOVA was conducted with the four versions of presentation and the three groups of partic…