Identifying construction hazards is a safety priority. Eye-tracking features have been used in prevalent research to assess hazard identification skills. However, confusion exists over their effectiveness due to certain features being more common. To address this gap, a machine learning-based approach is suggested to identify the most effective eye-tracking features for assessing hazard identification skills, thereby improving workplace safety. Four hazard types and eleven eye-tracking features were identified; accordingly, eighteen strategies were developed using these features. Support vector machines (SVM) and artificial neural networks (ANN) models were developed to assess these strategies. Virtual reality was used for the data collection. The findings showed that these models effectively analyzed eye-tracking features for hazard identification, suggesting the most impactful features for each hazard type and overall. This approach offers construction professionals a more precise assessment of hazard identification skills, enabling targeted improvements and reducing accident risks on construction sites.

付記する学位プログラム名: デザイン学大学院連携プログラム / 京都大学 / 新制・課程博士 / 博士(工学) / 甲第24607号 / 工博第5113号 / 新制||工||1978(附属図書館) / 京都大学大学院工学研究科機械理工学専攻 / (主査)教授 椹木 哲夫, 教授 小森 雅晴, 教授 泉井 一浩 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM

No / In this paper, we investigate how controlled changes to image properties and orientation affect eye movements for repeated viewings of images of natural scenes. We make changes to images by manipulating low-level image content (such as luminance or chromaticity) and/or inverting the image. We measure the effects of these manipulations on human scanpaths (the spatial and chronological path of fixations), additionally comparing these effects to those predicted by a widely used saliency model (L. Itti & C. Koch, 2000). Firstly we find that repeated viewing of a natural image does not significantly modify the previously known repeatability (S. A. Brandt & L. W. Stark, 1997; D. Noton & L. Stark, 1971) of scanpaths. Secondly we find that manipulating image features does not necessarily change the repeatability of scanpaths, but the removal of luminance information has a measurable effect. We also find that image inversion appears to affect scene perception and recognition and may alter fixation selection (although we only find an effect on scanpaths with the additional removal of luminance information). Additionally we confirm that visual saliency as defined by L. Itti and C. Koch's (2000) model is a poor predictor of real observer scanpaths and does not predict the small effects of our image manipulations on scanpaths.

The expansion of second hand clothing markets has developed through the recent years and the phenomenon has turned into a trend and normalization among fashion companies and consumers, rather than its historical label of being connected to low status. As digitalization has become important for how people consume fashion products, previous research suggests several perceived risks with shopping online. However, the Swedish second hand clothing market in the menswear segment is presented as a rather underdeveloped research area, which allows this study to investigate potential risks and possibilities in an online environment. In addition, we apply a combination of two theories (1) The perceived risk theory and (2) The servicescape theory. The chosen theories have been interpreted and tweaked in order to adapt to this research approach and to further analyze University students at Swedish School of Textiles and their online behavior, but also attitude towards second hand clothing. By applying these theories, a contribution on a deeper understanding was achieved and thereby allowed us to fulfill the purpose of the study, which is to identify how online companies can improve their presentation of product assortment with focus on second hand clothing menswear, using eye tracking technology. Hence, the results provide an increased knowledge from a business perspective and a consumer perspective. The chosen methodology for this study is based on a qualitative approach, primarily a laboratory experiment (eye tracking experiment), followed by a semi-structured interview. The experiment and the interviews took place at Handelslabbet located in Borås and the participants were students from Textile Management Bachelor program year 1. The most prominent perceived possibility was shown to be “Second hand - an increasing assortment” and the most prominent risk was “A hidden assortment”. The perceived risks and possibilities are presented in an online environment based on The servicescape theory. Ultimately, the findings indicate that an attitude- and behavioral gap is still a challenge in regards to sustainable consumption. Thus, companies must increase and develop strategies for their customers that facilitates how to consume more sustainably in an e-commerce environment.

This dissertation investigates the problem of how variations in the intensity of three selected constructs—multimedia signaling, speed and pacing, and cognitive engagement prompts—affect attention and learning outcomes in online learning environments. The study explores the intersecting cognitive theories of cognitive load, higher order thinking skills, and Mayer’s principles of multimedia learning, with specific focus on his signaling principle. Through the use of eye-tracking technology, the study measures focal attention, while immediate and delayed knowledge retention tests assess learning outcomes. Employing a robust experimental design, the research utilizes eye-tracking technology to directly measure focal attention, alongside both immediate and delayed knowledge retention tests to evaluate learning outcomes. The methodological framework modulates the intensity of selected constructs across low, optimal, and high conditions, enabling a comprehensive assessment of their impacts. The findings reveal statistically significant effects for multimedia richness and speed, indicating optimal levels that enhance learner engagement. This research concludes that carefully calibrated multimedia signals can substantially benefit online learning environments, offering educators and content creators actionable insights for designing more effective and engaging educational experiences.

The present series of experiments were designed to investigate the utility of the use of a masking system to assess the development of stimulus control. The first experiment compares sample observing time with response accuracy in a match-to-sample task. The second experiment more closely examines this relation by subdividing the sample stimulus mask into four quadrants. The third experiment compares sample observing time during training with accuracy during a subsequent testing condition to determine if the observed differentiation between the quadrants was correlated with the development of stimulus control.

Le rôle de l’attraction des éléments extérieurs du point de vente physique demeure une problématique complexe pour les commerçants. De plus, l’expérience en point de vente physique est en pleine évolution, due en partie à une présence accrue des nouvelles technologies. Cette thèse répond à la problématique suivante : comment la vitrine du point de vente influence-t-elle l’expérience de magasinage anticipée ? Nous nous focalisons sur l’influence de la technologie interactive et du niveau de représentation (construal level) en vitrine sur la perception de l’atmosphère, les réponses attentionnelles, les réponses affectives, la valeur de magasinage anticipée et les intentions comportementales. Nous testons les effets modérateurs de la motivation de magasinage et de la tendance exploratoire du consommateur. Nous adoptons une approche hypothético-déductive et nous procédons à deux expérimentations afin de répondre à notre problématique.Les résultats de la première expérimentation in situ (n=251) révèlent un effet stimulant et hédonique de l’utilisation de la technologie interactive en vitrine. La deuxième expérimentation, en laboratoire (n=144), a mobilisé une méthode d’eye-tracking pour collecter les données sur l’influence du niveau de représentation des éléments en vitrine. Les résultats montrent une influence significative du niveau de représentation sur l’atmosphère globale perçue et sur les intentions comportementales. Les résultats des cartes de chaleur montrent que la motivation de magasinage utilitaire renforce l’attention visuelle sur les produits en vitrine. Aucun effet modérateur de la tendance exploratoire n’a été détecté dans les deux expérimentations. / One of the relevant issues for retailers in this dissertation is the role of marketing mix elements outside the physical store in attracting customers. Another relevant issue is the evolution of the physical retailing experience which is partly due to the ever increasing presence of new retail technology. The aim of this dissertation is to answer the following question: how do store windows influence anticipated shopping experience? We focus on the influence of interactive technology and construal level in store windows on perceived global atmosphere, visual attention, affective response, anticipated shopping value and patronage intentions. Shopping motivation and exploratory buying behavior tendency were tested for moderating effects. Two experiments were conducted for this doctoral research. The results from the in situ field experiment (n=251) reveal a hedonic and arousing effect from usage of the interactive window display. The second experiment on store window construal level (n=144) was conducted using eyeLtracking equipment in a controlled laboratory setting. The results show a significant influence of store window construal level on perceived global atmosphere and on patronage intentions. The results from the heat map analysis show that utilitarian shopping motivation reinforces visual attention to products in the window display. No moderating effect was found in either study for exploratory buying behavior tendency.

No description available.

No description available.

Recent empirical studies about the neurological executive nature of reading in bilinguals differ in their evaluations of the degree of selective manifestation in lexical access as implicated by data from early and late reading measures in the eye-tracking paradigm. Currently two scenarios are plausible: (1) Lexical access in reading is fundamentally language non-selective and top-down effects from semantic context can influence the degree of selectivity in lexical access; (2) Cross-lingual lexical activation is actuated via bottom-up processes without being affected by top-down effects from sentence context. In an attempt to test these hypotheses empirically, this study analyzed reader-text events arising when cognate facilitation and semantic constraint interact in a 22 factorially designed experiment tracking the eye movements of 26 Swedish-English bilinguals reading in their L2. Stimulus conditions consisted of high- and low-constraint sentences embedded with either a cognate or a non-cognate control word. The results showed clear signs of cognate facilitation in both early and late reading measures and in either sentence conditions. This evidence in favour of the non-selective hypothesis indicates that the manifestation of non-selective lexical access in reading is not constrained by top-down effects from semantic context. / Dagens eye-trackingstudier över de neurologiska processer som styr läsning i tvåspråkiga är oeniga om graden av icke-selektiv aktivation som infinner sig inuti den tvåspråkiges mentala lexikon enligt kvantitativa data på tidiga och sena åtkomstsstadier. Två olika förhållningssätt till frågan finns: (1) Lexikal åtkomst är fundamentalt sett icke-selektiv, men top-down effekter från semantisk kontext kan influera den grad av selektiv åtkomst som påträffas i mentala lexikon; eller (2) Parallell aktivation av olika språkplan sker via bottom-up processer utan någon inverkan ifrån top-down effekter ifrån meningskontext. För att testa dessa hypoteser undersöktes läsprover framtagna genom att kontrollera kognatförenklingseffekten och kontextskapad ordförutsägbarhet i en 22 faktorial stimulusdesign. 26 tvåspråkiga (svenska L1, engelska L2) läste meningsstimuli på engelska. Stimulus bestod av meningar med hög eller låg grad av semantisk och lexikal priming som innehöll antingen ett kognat- eller ett ickekognatkontrollord. Resultaten visade klara tecken på kognatförenkling i tidiga såsom sena åtkomstsstadier för båda typers meningsstimuli. Dessa resultat förespråkar att icke-selektiv åtkomst  i läsning inte påverkas av top-down effekter ifrån meningskontext. / <p>Författaren heter numer Mattias Bystedt.</p>