An advanced training program on risk perception was developed and evaluated in a driving simulator. This training program included two elements. The first one was a PC-based Risk Awareness and Perception Program (RAPT) that had been developed and evaluated in several studies by researches at the Human Performance Lab within the last several years. Plan views of risky scenarios were used to explain to participants the location of potential hazards. The second element of the training (SIMRAPT) was newly developed for this study and used the portable low-cost driving simulator Drive Square Simulation System to train risk perception skills while the participant actually drove a real car in a virtual environment. A head mounted display was used to present the virtual world. Feedback was given to participants when they failed to scan appropriately for hazards. Twelve novice drivers served as experimental group and were trained with the combined RAPT/SIMRAPT training program. Twelve other novice drivers were given training not relevant to hazard anticipation and served as the control group. After training, both groups were evaluated on an advanced driving simulator (different from the Drive Square Simulation System used in SIMRAPT training) and the eye movements of both groups of drivers were measured. The drivers’ score was based on whether or not their eye-fixations indicated recognition of potential risks in different driving situations. The evaluation included eight scenarios used in the RAPT/SIMRAPT training (near transfer scenarios) and eight scenarios that were not used in the training (far transfer scenarios). The results indicated that trained drivers are more likely than untrained drivers to fixate on regions where potential risks might appear. Further the evaluation indicates that the training effect of the combined training using both the PC (RAPT) and a low-cost driving simulator (SIMRAPT) is larger than for training programs that only use the PC, though not significantly so.

The fourth industrial revolution also known as Industry 4.0 ushers in new advanced manufacturing technologies that enables companies to improve efficiency and reduce waste. The promising outlook of this era suggests that the implementation degree for Swedish manufacturing SMEs operating in a high-tech context should be high, this is however not empirically observed. The purpose of the paper is to investigate the implementation level of Industry 4.0 technologies in the chosen context, identify barriers that hinder implementation, as well as investigate how the use of the new technologies can be increased. The paper uses a quantitative data approach, using empirical data derived from a survey that was sent out to relevant practitioners acting in the manufacturing industry. Findings indicate that the barriers derived from previous literature match what is experienced by the practitioners surveyed, but that the perceived impact between each barrier is varied depending on if they have implemented Industry 4.0 or not. By combining key themes and findings of the paper, a model is constructed and applied to reduce the perceived impact of the barriers leading to higher implementation levels of new advanced technologies.

This thesis elucidates patterns and drivers of invertebrate herbivory, herbivore diversity, and community-level biomass along elevational and land use gradients at Mt. Kilimanjaro, Tanzania. Chapter I provides background information on the response and predictor variables, study system, and the study design. First, I give an overview of the elevational patterns of species diversity/richness and herbivory published in the literature. The overview illuminates existing debates on elevational patterns of species diversity/richness and herbivory. In connection to these patterns, I also introduce several hypotheses and mechanisms put forward to explain macroecological patterns of species richness. Furthermore, I explain the main variables used to test hypotheses. Finally, I describe the study system and the study design used. Chapter II explores the patterns of invertebrate herbivory and their underlying drivers along extensive elevational and land use gradients on the southern slopes of Mt. Kilimanjaro. I recorded standing leaf herbivory from leaf chewers, leaf miners and gall-inducing insects on 55 study sites located in natural and anthropogenic habitats distributed from 866 to 3060 meters above sea level (m asl) on Mt. Kilimanjaro. Standing leaf herbivory was related to climatic variables [mean annual temperature - (MAT) and mean annual precipitation - (MAP)], net primary productivity (NPP) and plant functional traits (leaf traits) [specific leaf area (SLA), carbon to nitrogen ratio (CN), and nitrogen to phosphorous ratio (NP)]. Results revealed an unimodal pattern of total leaf herbivory along the elevation gradient in natural habitats. Findings also revealed differences in the levels and patterns of herbivory among feeding guilds and between anthropogenic and natural habitats. Changes in NP and CN ratios which were closely linked to NPP were the strongest predictors of leaf herbivory. Our study uncovers the role of leaf nutrient stoichiometry and its linkages to climate in explaining the variation in leaf herbivory along climatic gradients. Chapter III presents patterns and unravels direct and indirect effects of resource (food) abundance (NPP), resource (food) diversity [Functional Dispersion (FDis)], resource quality (SLA, NP, and CN rations), and climate variables (MAT and MAP) on species diversity of phytophagous beetles. Data were collected from 65 study sites located in natural and anthropogenic habitats distributed from 866 to 4550 m asl on the southern slopes of Mt. Kilimanjaro. Sweep net and beating methods were used to collect a total of 3,186 phytophagous beetles representing 21 families and 304 morphospecies. Two groups, weevils (Curculionidae) and leaf beetles (Chrysomelidae) were the largest and most diverse families represented with 898 and 1566 individuals, respectively. Results revealed complex (bimodal) and dissimilar patterns of Chao1-estimated species richness (hereafter referred to as species diversity) along elevation and land use gradients. Results from path analysis showed that temperature and climate-mediated changes in NPP had a significant positive direct and indirect effect on species diversity of phytophagous beetles, respectively. The results also revealed that the effect of NPP (via beetles abundance and diversity of food resources) on species diversity is stronger than that of temperature. Since we found that factors affecting species diversity were intimately linked to climate, I concluded that predicted climatic changes over the coming decades will likely alter the species diversity patterns which we observe today. Chapter IV presents patterns and unravels the direct and indirect effects of climate, NPP and anthropogenic disturbances on species richness and community-level biomass of wild large mammals which represent endothermic organisms and the most important group of vertebrate herbivores. Data were collected from 66 study sites located in natural and anthropogenic habitats distributed from 870 to 4550 m asl on the southern slopes of Mt. Kilimanjaro. Mammals were collected using camera traps and used path analysis to disentangle the direct and indirect effects of climatic variables, NPP, land use, land area, levels of habitat protection and occurrence of domesticated mammals on the patterns of richness and community-level biomass of wild mammals, respectively. Results showed unimodal patterns for species richness and community-level biomass of wild mammals along elevation gradients and that the patterns differed depending on the type of feeding guild. Findings from path analysis showed that net primary productivity and levels of habitat protection had a strong direct effect on species richness and community-level biomass of wild mammals whereas temperature had an insignificant direct effect. Findings show the importance of climate-mediated food resources in determining patterns of species richness of large mammals. While temperature is among key predictors of species richness in several ectotherms, its direct influence in determining species richness of wild mammals was insignificant. Findings show the sensitivity of wild mammals to anthropogenic influences and underscore the importance of protected areas in conserving biodiversity. In conclusion, despite a multitude of data sets on species diversity and ecosystem functions along broad climatic gradients, there is little mechanistic understanding of the underlying causes. Findings obtained in the three studies illustrate their contribution to the scientific debates on the mechanisms underlying patterns of herbivory and diversity along elevation gradients. Results present strong evidence that plant functional traits play a key role in determining invertebrate herbivory and species diversity along elevation gradients and that, their strong interdependence with climate and anthropogenic activities will shape these patterns in future. Additionally, findings from path analysis demonstrated that herbivore diversity, community-level biomass, and herbivory are strongly influenced by climate (either directly or indirectly). Therefore, the predicted climatic changes are expected to dictate ecological patterns, biotic interactions, and energy and nutrient fluxes in terrestrial ecosystems in the coming decades with stronger impacts probably occurring in natural ecosystems. Furthermore, findings demonstrated the significance of land use effects in shaping ecological patterns. As anthropogenic pressure is advancing towards more pristine higher elevations, I advocate conservation measures which are responsive to and incorporate human dimensions to curb the situation. Although our findings emanate from observational studies which have to take several confounding factors into account, we have managed to demonstrate global change responses in real ecosystems and fully established organisms with a wide range of interactions which are unlikely to be captured in artificial experiments. Nonetheless, I recommend additional experimental studies addressing the effect of top-down control by natural enemies on herbivore diversity and invertebrate herbivory in order to deepen our understanding of the mechanisms driving macroecological patterns along elevation gradients. / In dieser Dissertation werden Muster und Determinanten von Herbivorendiversität, von Herbivorieraten durch Invertebraten sowie die Diversität und Gesamtbiomasse von Säugetieren entlang von Höhen- und Landnutzungsgradienten am Kilimandscharo (Tansania) untersucht. Kapitel I liefert Hintergrundinformationen zu den betrachteten Variablen, dem Untersuchungssystem und dem generellen Studiendesign: Zuerst fasse ich den aktuellen Kenntnisstand über die Muster des Artenreichtums und der Herbivorie entlang von Höhengradienten zusammen und erläutere in diesem Zusammenhang verschiedene Hypothesen, die zur Erklärung von Gradienten des Artenreichtum herangezogen werden. Ich erkläutere verschiedene Variablen, die zum Testen dieser Hypothesen erhoben wurden und stelle dar, wie diese den Artenreichtum, die Herbivorieraten und die Biomasse beeinflussen könnten. Anschließend beschreibe ich das Untersuchungssystem, sowie das generelle Design der Studie. In Kapitel II werden die Muster und Determinanten der Invertebratenherbivorie entlang von Höhen- und Landnutzungsgradienten an den südlichen Hängen des Kilimandscharos präsentiert. Auf insgesamt 55 Untersuchungsflächen, die sowohl natürliche als auch anthropogen genutzte Habitate am Kilimandscharo in Höhenlagen zwischen 866 und 3060 Meter über Normalnull (m ü. NN) umfassten, wurden die Herbivorieraten ektophager, minierender und gallbildener Insekten an Blättern erfasst. Die Blattherbivorie war sowohl mit klimatischen Variablen [Jahresmitteltemperatur und mittlere Jahresniederschlagsmenge], der Nettoprimärproduktivität (NPP) und mit funktionellen Blattmerkmalen von Pflanzen [spezifische Blattfläche (SLA), Kohlenstoff (C) / Stickstoff (N)-Verhältnis, sowie N / Phosphor (P)-Verhältnis] assoziiert. Die Gesamtherbivorie zeigte eine unimodale Verteilung über den Höhengradienten, wurde aber sowohl von der Herbivorengilde, als auch vom Habitattyp (natürlich versus anthropogen) beeinflusst. Das C/N-Verhältnis von Blättern war die stärkste Determinante der Blattherbivorie und wurde selbst stark durch die NPP bestimmt. Herbivorieraten sanken mit steigendem C/N-Verhältnis. Das C/N Verhältnis nahm mit steigender NPP zu.- Letztere konnte fast vollständig durch Änderungen der mittleren Jahrestemperatur (MAT) und des Jahresniederschlags (MAP) entlang des Höhengradienten erklärt werden. Damit zeigt unsere Studie, dass sich durch klimatische Faktoren und Energie, welche ihrerseits die Blattchemie beeinflussen und so Variationen in der Blattherbivorie entlang großer Klimagradienten ergeben. In Kapitel III werden die Muster im Artenreichtum phytophager Käfer entlang der Höhen- und Landnutzungsgradienten untersucht und die direkten und indirekten Effekte von klimatischen Faktoren (MAT, MAP), NPP und funktionellen Pflanzenmerkmalen (funktionelle Dispersion, SLA, C/N - und N/P - Verhältnisse) auf diese Muster analysiert. Die entsprechenden Daten wurden auf 65 Untersuchungsflächen, die sowohl natürliche als auch anthropogene Habitate entlang eines Höhengradienten am Kilimandscharo von 866 bis 4550 m ü. NN abdeckten, erhoben. Mittels Kescher wurden insgesamt 3186 phytophage Käfer aus 21 Familien gesammelt und in 304 Morphospezies eingeteilt. Der Artenreichtum phytophager Käfer zeigte eine komplexe, zweigipflige Verteilung entlang der Höhen- und Landnutzungsgradienten. Eine Pfadanalyse ergab, dass sowohl die MAT, als auch NPP positiven direkte bzw. indirekte Effekt auf die Artendiversität phytophager Käfer hatte. Die NPP war positiv mit der funktionellen Dispersion von Blattmerkmalen, ein Maß für die Diversität der Nahrungsressourcen, korreliert. Letztere hatte einen positiven Effekt auf die Diversität der Käfer. Die starken direkten und indirekten Effekte von Klima auf die Diversität und Abundanz von phytophagen Käfern, lassen vermuten dass der Klimawandel in den nächsten Dekaden großen Änderungen der Struktur von phytophagen Käfergemeinschaften bewirken wird. In Kapitel IV untersuchen wir den Effekt von Klima, NPP und anthropogener Störung auf den Artenreichtum und die Gesamtbiomasse von Großwild. Dazu wurden auf 66 Untersuchungsflächen, welche natürliche und anthropogene Habitate in Höhenstufen zwischen 870 und 4550m ü. NN umfassten, Daten zum Artenreichtum un der Abundanz von Großwild mittels Kamerafallen erfasst. Mittels einer Pfadanalyse wurden die direkten und indirekten Effekte von klimatischen Variablen, NPP, Landnutzung, Größe und Schutzstatus der Flächen, sowie der Präsenz von domestizierten Säugetieren auf den Artenreichtum und die Biomasse von Großwild untersucht. Artenreichtum und Gesamtbiomasse dieser endothermen Organismen zeigten eine unimodale Verteilung über den Höhengradienten. Verschiedene Nahrungsgilden zeigten unterschiedliche Muster. Es konnte gezeigt werden, dass NPP und der Schutzstatus der Fläche, aber nicht die Temperatur einen direkten, positiven Einfluss auf den Artenreichtum und die Gesamtbiomasse des Großwildes hatte. Die vom Klima abhängige Nahrungsressourcenverfügbarkeit ist also eine wichtige Determinante im Artenreichtum von Großwild. Die Temperatur hingegen, die den Artenreichtum verschiedener ektothermer Organismen entscheidend prägt, hatte keinen direkten Einfluss auf den Artenreichtum des Großwildes Dafür reagiert das Großwild besonders sensibel auf anthropogene Einflüsse, was wiederum die Wichtigkeit von Schutzgebieten unterstreicht. Obwohl die Muster im Artenreichtum und in Ökosystemfunktionen entlang großer klimatischer Gradienten bereits gut dokumentiert sind, ist das Wissen über die zu Grunde liegenden Prozesse nach wie vor unzureichend. Mit meinen drei Studien über die Muster und Determinanten der Herbivorendiversität, der Herbivorieraten und der Großwildbiomasse trage ich somit zur Verbesserung des mechanistischen Verständnisses solcher makroökologischer Muster bei. Wie die Pfadanalysen zeigten, wurden sowohl der Artenreichtum die Biomasse als auch ökologische Prozesse direkt oder indirekt vom Klima beeinflusst. Es ist somit zu erwarten, dass der vorhergesagte Klimawandel ökologische Muster, biotische Interaktionen, Energie- und Nährstoffkreisläufe in terrestrischen Ökosystemen wesentlich umstrukturieren wird, wobei natürliche Systeme wahrscheinlich besonders sensibel auf den Klimawandel reagieren werden. Meine Ergebnisse demonstrieren auch den Einfluss von Landnutzung auf Artenreichtum und ökologische Prozesse. Da der anthropogene Druck auf die natürlichen Ökosysteme des Kilimandscharos immer weiter zunimmt, sollten objektive Biodiversitätsmaße implementiert werden mit denen man Veränderungen in den Ökosystemen und in Ökosystemldienstleistungen schnell detektieren kann. Meine Ergebnisse basieren auf Beobachtungsdaten, die von bestimmten Nebenfaktoren im Feld beeinflusst werden können. Dennoch ist es mir gelungen mit korrelativen Methoden, Organismen in ihrem biotischen und abiotischen Interaktionsumfeld zu untersuchen – ein Szenario, welches in einem rein experimentellen Aufbau in dieser Form wahrscheinlich nicht geschaffen werden kann. Über weiterführende Experimente könnte jedoch zum Beispiel der Einfluss von Prädatoren auf die Herbivorendiversität und Herbivorieraten quantifiziert werden, welches unser Verständnis über die Determinanten makroökologischer Muster noch vertiefen würde.

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Cyclists' perception of car drivers as 'aggressive' and potentially dangerous is an important reason why they demand dedicated cycling infrastructure or cycle on the footpath even when it is illegal. Cycling infrastructure is built on main roads only. On minor roads cyclists and drivers share the road which might lead to conflicts. We tried to explore such a situation from the perspective of a car driver who drives behind a cyclist and has no opportunity to overtake with the legal safety margin. In such a situation, drivers have several options to react. The only legal option is to adapt their own speed to the cyclist's speed, wait until there is enough room and overtake then. Some drivers show other reactions which might frighten the cyclist and/or increase the risk of a crash: honking, shouting, close following, close overtaking and others. Cyclists might avoid roads where they made or expect such experiences, cycle on the footpath, cycle in the dooring zone of parking cars. Noncyclists observing such driver behaviour might decide better not to cycle at all. These reactions work against the political aims to increase the modal share of cycling and walking and improve traffic safety for nonmotorized road users. What are the differences between drivers who perform actions which are aggressive more or less often? Which role do their attitudes and mobility habits play? We expected that drivers who see cyclists on the road as less legitimate perform more aggressive acts [1, Oldmeadow]. We expected a positive correlation between perceived legitimacy of aggressive acts and the frequency of their performance. Road users have different general aims lik.e speed and safety. There are also more situation specific aims like expressing one's anger. We expect that drivers see behaviour which is in accordance with their aims as more legitimate [2, Varet] and show it more often. We expect that car drivers who show more aggressive behaviour blame cyclists more for the situation [3, Pimentel]. We expect that persons who cycle more often behave in a less aggressive manner because they see the situation also from the perspective of the cyclist. Aggressive drivers commit more traffic violations [4, King] and thus have a higher risk of receiving a fine. We expected that persons who report more aggressive behaviour have got more fines for traffic offences. [From: Introduction]

Denna rapport representerar masterprojektet som utförs av Wei Bai och Emma Styf, och skrevs av den förra. Projektet genomfördes med Volvo GTT Ergonomics avdelning (Volvo Group Trucks Technology).Med fokus på kommunikationen mellan lastbilsförare och andra trafikanter genomfördes användarstudier. 8 lastbilschaufförer observerades under arbetet och intervjuades om deras åsikter om andra trafikanter och nuvarande kommunikationsförhållanden. En undersökning skickades ut och fick 63 svar från bilförare, motorcyklister, cyklister och fotgängare. Genom att kombinera analysen av samrisker och undersökningen fastställdes den fokuserade kritiska situationen vid korsningen i stadstrafik, där kommunikationsbehovet främst ligger mellan lastbilföraren och sårbara trafikanter.Några av de anställda i Volvo GTT introducerades i konceptutvecklingsfasen i form av verkstad och användarutvärdering, för att hjälpa till med konceptgenerering och testning av designelement.De slutliga koncepten är två system som arbetar tillsammans på ett visuellt sätt, vilket förbättrar kommunikationen när sårbara trafikanter korsar vägen och när lastbilen vänder.Koncept A fungerar när lastbilen närmar sig ett korsning med fotgängare som väntar på att korsa. Truckens hastighetsstatus visas av LED-matrisen i frontgallret. När trucken har stoppats har lastbilschauffören möjlighet att sätta på en projicering av zebraövergången framåt för att låta fotgängarpasset. Projektionen är utformad för att vara interaktiv när det kommer fordon på andra sidan.Concept B arbetar för en lastbil som vrider höger. Ett projektionsområde på marken påminner andra trafikanter för att hålla säkert avstånd. Föraren får också uppstart och ljudsignaler om förekomsten av andra trafikanter. Trucken stannar automatiskt när en annan trafikanvändare är för nära. / This report represents the master thesis project conducted by Wei Bai and Emma Styf, and was written by the former. The project was conducted with the Ergonomics Department of Volvo GTT (Volvo Group Trucks Technology).With the focus on the communication between truck drivers and other road users, user studies were implemented. 8 truck drivers were observed during work and interviewed about their opinions on other road users and the current communication condition. A survey was sent out and got 63 responses from car drivers, motorcyclists, cyclists and pedestrians. Combining the analysis of co-rides and the survey, the focused critical situation was set at the intersection in urban traffic, in which the communication needs mainly lie between the truck driver and vulnerable road users.A few of employees in Volvo GTT were introduced in the phase of concept development in the forms of workshop and user evaluation, to help with the concept generation and design elements testing.The final concepts are two systems working cooperatively in a visual way, enhancing the communication when vulnerable road users are crossing the road and when the truck is turning.Concept A works when the truck is approaching an intersection with pedestrians waiting to cross. The speed status of the truck is shown by LED matrix in the front grille. Once the truck is stopped, the truck driver has the option to turn on a projection of zebra crossing to the front to let the pedestrian pass. The projection is designed to be interactive when there are vehicles coming on the other side.Concept B works for a truck turning right. A projection area on the ground reminds other road users to keep safe distance. The driver also gets head-up displayed and audio signals about the occurrence of other road users. The truck automatically stops when another road user has got too close.

We present the Hadley model, a formal descriptive model of input and output for modern computer operating systems. Our model is intentionally inspired by the Open Systems Interconnection model of networking; I/O as a process is defined as a set of translations between a set of computer-sensible forms, or layers, of information. To illustrate an initial application domain, we discuss the utility of the Hadley model and a potential associated I/O system as a tool for digital forensic investigators. To illustrate practical uses of the Hadley model we present the Hadley Specification Language, an essentially functional language designed to allow the translations that comprise I/O to be written in a concise format allowing for relatively easy verifiability. To further illustrate the utility of the language we present a read/write Microsoft DOS FAT12 and read-only Linux ext2 file system specification written in the new format. We prove the correctness of the read-only side of these descriptions. We present test results from operation of our HSL-driven system both in user mode on stored disk images and as part of a Linux kernel module allowing file systems to be read. We conclude by discussing future directions for the research.

The influence of pollinators on the evolution of flower morphology has been extensively explored. Yet, the effect of other ecological factors, such as genetic drift, environmental filtering, and allometric constraints, gained less attention. In this study, we addressed the importance of those drivers in a predominantly selfing species. 400 worldwide Arabidopsis thaliana accessions were gathered and grown in semi-controlled climatic settings to explore the association between flower organ size, genotypes, and habitats. In our dataset, petal area was the most variable trait. Petal size was phenotypically and genetically correlated with other flowering structures, but no genetic allometry constraints were found to affect petal size evolution. The negative correlation of petal size with fitness and the traces of selective constraints in petal associated genes suggest that petal size is currently under selection in this species. We found paucity of genotypes harbouring large petals at low suitability regions, which points to the presence of environmental filtering. The novelty of this project relies on the pluralistic integration of factors studied and highlights the role of the climate on flower size evolution. Our results suggest that resource allocation is an important driver of flower size evolution in self-fertilising species but that its effect is largely determined by local environmental pressures.