Temporal context memory is a type of episodic memory that refers to memory for the timing of events. Temporal context includes environmental cues that provide information about the time point at which an event happened. The purpose of the present studies is to investigate the brain mechanisms underlying temporal context processing by using both fMRI and ERP techniques. The fMRI study investigated whether hippocampal representations in CA1 and DG/CA3 subfields were sensitive to the flow of physical time, and if so, whether the number of events that occur during a time period influences the temporal representation of a target event. Results showed that both CA1 and DG/CA3 were sensitive to the flow of physical time, which was indicated by higher representational similarity between two pictures that occurred closer in time than those that occurred more distant in time. However, the variety of preceding events did not influence temporal representation, which was demonstrated by the lack of a significant representational similarity difference between two pictures that were interleaved with variable events as opposed to similar events. The ERP study compared the ERP correlates of temporal to spatial context. Results showed that temporal and spatial contexts had overlapping ERP effects except that the ERP effects of temporal context were more frontally distributed than spatial context. Both the fMRI and ERP studies indicate that temporal context is associated with similar neural correlates to other types of context in episodic memory. / Ph. D. / Episodic memory is memory for where and when an event happened. The ability to memorize the timing of events relies on one type of episodic memory: temporal context memory. Temporal context includes environmental cues that provide information about the time point at which an event happened. The purpose of the present studies was to investigate the brain mechanisms underlying temporal context processing by using both functional magnetic resonance imaging (fMRI) and event and event-related potential (ERP) techniques. The fMRI study focused on hippocampus, one of the key brain regions process non-temporal contexts (i.e. spatial context, which refers to where an event happened), and investigated which subfields (CA1 and DG/CA3) in the hippocampus were sensitive to the flow of physical time. And the second purpose of the fMRI study was to examine whether the variety of events that occur during a time period influences the temporal representation. Results showed that both CA1 and DG/CA3 were sensitive to the flow of physical time. However, the variety of events did not influence temporal representation. Since CA1 and DG/CA3 are also critical for non-temporal context processing, these results indicate that temporal context has same neural mechanisms as non-temporal contexts. The ERP study investigated the brain activity as a whole and directly compared the ERP correlates of temporal to non-temporal context. Results showed that temporal and nontemporal contexts had overlapping ERP correlates except that the ERP effects of temporal context were more frontally brain region distributed than spatial context. Therefore, both the fMRI and ERP studies indicate that temporal context is associated with similar neural correlates to other types of context in episodic memory.

Pervasive (ubiquitous) computing is a new paradigm where the computers are submerged into the background of the everyday life. One important aspect of pervasive systems is context-awareness. Context-aware systems are those that can adapt their behaviours according to the current context. Context-aware applications are being integrated into our everyday activity aspects such as: health care, smart homes and transportations. There exist a wide range of context-aware applications such as: mobile phones, learning systems, smart vehicles. Some context-aware systems are critical since the consequence of failing to identify a given context may be catastrophic. For example, an auto-pilot system is a critical context-aware system; it senses the humidity, clouds, wind speed and accordingly adjusts the altitude, throttle and other parameters. Being a critical context-aware system has to be provably correct. Policy-based approaches has been used in many applications but not in context-aware systems. In this research, we want to discover the anatomy (i.e. architecture, structure and operational behaviour) of policy-based management as applied to context-aware systems, and how policies are managed within such a dynamic system. We propose a novel computational model and its formalisation is presented using the Calculus of Context-aware Ambients (CCA). CCA has been proposed as a suitable mathematical notation to model mobile and context-aware systems. We decided to use CCA due to three reasons: (i) in CCA, mobility and context-awareness are primitive constructs and are treated as first-class citizens; (ii) properties of a system can be formally analysed; (iii) CCA specifications are executable, and thus, leading to rapid prototyping and early validation of the system properties. We, then show how policies can be expressed in CCA. For illustration, the specification of the event-condition-action (ECA) conceptual policy model is modelled in CCA in a natural fashion. We also propose a policy-based architecture for context-aware systems, showing its different components, and how they interact. Furthermore, we give the specification of the policy enforcement mechanism used in our proposed architecture in CCA. To evaluate our approach, a real-world case study of an infostation-based mobile learning (mLearning) system is chosen. This mLearning system is deployed across a university campus to enable mobile users to access mobile services (mServices) represented by course materials (lectures, tests and tutorials) and communication services (intelligent message notification and VoIP). Users can access the mServices through their mobile devices (Hand-set phones, PDAs and laptops) regardless of their device type or location within a university campus. We have specified the mLearning system in CCA (i.e. specification based on policies of the mServices), afterwards, the specification is simulated using the CCA interpreter tool. We have developed an animation tool specially designed for the mLearning system. The animation tool provides graphical representation of the CCA processes. In terms of safety and liveness, some important properties of the mLearning system have been validated as a proof of concept.

The purpose of this research is to show how business and enterprise can align sustainability and sustainable development to create strategic sustainability (SS) procedures, which can be used for planning towards sustainability in an island context. Even with the 3Ps depiction of sustainable development (SD), the idea continues to be difficult to make operational (Azar, Holmberg and Lindgren 1996) and has failed in many of its applications (Baumgartner and Korhonen 2010). Moreover, businesses wishing to operate in perpetuity are challenged by the socio-ecological system that constitutes sustainability. But all businesses have materials, energy and waste flows, (MEWFs) and a more strategic approach to managing these flows can assist businesses with the sustainability challenge. Firstly however, sustainability described as a successful socio-ecological system must be understood. Secondly the process of reducing the MEWFs within the business, referred to as sustainable development actions must be seen as separate but congruent to sustainability. By adapting the framework for strategic sustainable development and using a mixed methods approach, the necessary strategy content for the SS procedures are researched in the tourist accommodation sector-Grenada. It is shown that in an island context, defined as an isolated system with scarce resources, (Deschenes and Chertow 2004) the challenges of sustainability, especially for businesses such as the tourist accommodation sector, are exacerbated. The research concludes with three important groups of steps for the SS procedures: 1) visioning and vision linking; 2) developing sector strategic actions and 3) monitoring and evaluation. A tourism symbiosis was proposed as a critical action for reducing MEWFs. Considerations for implementing aspects of a proposed green economy roadmap using the SS procedures are addressed. The research can assist both policy makers and business leaders to operationalise sustainable development and to do so with some degree of certainty of achieving sustainability in an island context.

This thesis integrates the epistemology of testimony with work on the epistemology, psychology, and metaphysics of language. Epistemologists of testimony typically ask what conditions must be met for an agent to gain testimonial justification or knowledge that p given that p has been asserted, and this assertion has been understood. Questions regarding the audience's ability to grasp communicated contents are largely ignored. This is a mistake. Work in the philosophy of language (and related areas) suggests that the determination and recovery of communicated contents is far from straightforward, and can go wrong in many ways. This thesis investigates the epistemology of testimony in light of this work, with a special focus on miscommunication. The introduction provides a brief overview of some relevant work on testimony, the philosophy of language, and psychology, and argues that there is good reason to investigate the three. One obvious problem in this area is that if testimonial knowledge requires knowledge of what is said then the risk of miscommunication will block testimonial knowledge. Chapter two argues that testimonial knowledge does not require knowledge of what is said. The remaining four chapters discuss problems which do to arise from miscommunication. Chapters three and four focus on the epistemic uncertainty of communication with context sensitive terms. Chapter three argues that many beliefs formed on the basis of context sensitive testimony are unsafe and insensitive. Chapter four argues that speakers often have plausible deniability about the contents of their assertions. Chapters five and six explore types of miscommunication which arise as a result of background mental states affecting our linguistic understanding. Chapter five explores the social/ethical consequences of this, arguing that certain groups are disproportionately subject to harmful misinterpretation. Chapter six argues that testimonial anti-reductionists make the wrong predictions about a range of cases of cognitive penetration.

There is an expectation that university teachers have a good understanding of the value of educational technologies in learning and teaching as well as be able to incorporate them effectively into their teaching (Carter et al, 2011, Higher Education Academy, 2011; Sharples et al, 2016). However, according to key literature (Conole, 2004; Kennedy et al, 2011; Laurillard, 2007; Selwyn, 2007; Walker et al, 2016) the extent to which educational technologies have impacted on teaching and learning practices is considered to be minimal. While universities have invested heavily in educational technologies for teaching purposes, institutional virtual learning environments are predominately being used as a vehicle for information transmission and document repository (Armellini et al, 2012; Walker et al, 2016). The research I report here investigated the thinking and conceptions behind how Bryn, a university teacher, used educational technologies to optimise the quality of his students’ learning. I also report on the thinking and decision making behind how 15 of his students used educational technologies to optimise the quality of their university learning. The analysis of the data collected suggests that there is an evolution occurring in how university teaching staff are thoughtfully integrating educational technology into programmes and satisfying the majority of students with this development. It was also identified that influences of educational technology on student learning are mediated by students’ disposition towards learning and the task and social contexts of their learning. It is recommended that those students who are pioneer users of educational technology and ahead of the university teacher’s curve be incorporated into the planning and evaluating of experiences of learning and teaching in educational technology-mediated classroom contexts and be appointed as learning coaches to those students who are somewhat bewildered and frustrated by educational technology use.

The automotive industry is facing a period of significant transformation due to the arrival of many new digital technologies. As the focus of automotive engineering has shifted from hardware to software, the conventional processes of making, buying and owning an automobile have changed. Peoples' desires for new automotive experiences are increasing; they demand more sophisticated approaches to the automotive experience beyond merely improving functional requirements for advanced automation systems, interfaces and connectivity. Thus, it is essential to understand human experience in order to help people deal with the high degree of complexity in the driving environment and to help them to cope with unanticipated driving events that involve emotional, psychological or sociological issues. This research takes a human-centred approach to investigating real-life scenarios in which people emotionally engage with automobiles with the aim of developing a relevant set of scenarios for this context. An extensive literature review was conducted of human emotion, memory systems, emotional memory characteristics, scenarios, and scenarios with emotional aspects, followed by a discussion defining scenario development process and affective scenarios. This research provides a methodology for in-depth qualitative studies that develop affective design scenarios with automobiles. As a triangulation approach, two independent studies in different settings explored affective scenario themes in automotive contexts of people's real-life car stories that made them respond emotionally. The themes that were revealed from both studies were consolidated, and exemplary scenarios of 13 consolidated main themes were formulated to illustrate a set of affective scenarios in automotive contexts. This research leads to an enhanced understanding of a set of critical contexts that automotive practitioners should take into account for future automotive design. Suggestions with possible questions based on the research outcome provide opportunities for them to agilely cope with unanticipated future events, whereby highly complex driving environment by connected and autonomous vehicles. This methodology used here can be replicated for future affective scenario studies focusing on specific products, sub-systems or services such as navigation systems or car-sharing services. The results, which have been validated through a triangulation approach, can bolster the automobile design process by addressing potential issues and challenges in automotive experience by facilitating idea generation, enhancing a shared understanding of critical contexts and by assisting decision-making among stakeholders from different departments.

Questions pertaining to the unique structure and organisation of language have a long history in the field of linguistics. In recent years, researchers have explored cultural evolutionary explanations, showing how language structure emerges from weak biases amplified over repeated patterns of learning and use. One outstanding issue in these frameworks is accounting for the role of context. In particular, many linguistic phenomena are said to to be context-dependent; interpretation does not take place in a void, and requires enrichment from the current state of the conversation, the physical situation, and common knowledge about the world. Modelling the relationship between language structure and context is therefore crucial for developing a cultural evolutionary approach to language. One approach is to use statistical analyses to investigate large-scale, cross-cultural datasets. However, due to the inherent limitations of statistical analyses, especially with regards to the inadequacy of these methods to test hypotheses about causal relationships, I argue that experiments are better suited to address questions pertaining to language structure and context. From here, I present a series of artificial language experiments, with the central aim being to test how manipulations to context influence the structure and organisation of language. Experiment 1 builds upon previous work in iterated learning and communication games through demonstrating that the emergence of optimal communication systems is contingent on the contexts in which languages are learned and used. The results show that language systems gradually evolve to only encode information that is informative for conveying the intended meaning of the speaker - resulting in markedly different systems of communication. Whereas Experiment 1 focused on how context influences the emergence of structure, Experiments 2 and 3 investigate under what circumstances do manipulations to context result in the loss of structure. While the results are inconclusive across these two experiments, there is tentative evidence that manipulations to context can disrupt structure, but only when interacting with other factors. Lastly, Experiment 4 investigates whether the degree of signal autonomy (the capacity for a signal to be interpreted without recourse to contextual information) is shaped by manipulations to contextual predictability: the extent to which a speaker can estimate and exploit contextual information a hearer uses in interpreting an utterance. When the context is predictable, speakers organise languages to be less autonomous (more context-dependent) through combining linguistic signals with contextual information to reduce effort in production and minimise uncertainty in comprehension. By decreasing contextual predictability, speakers increasingly rely on strategies that promote more autonomous signals, as these signals depend less on contextual information to discriminate between possible meanings. Overall, these experiments provide proof-of-concept for investigating the relationship between language structure and context, showing that the organisational principles underpinning language are the result of competing pressures from context, cognition, and communication.

Constructive methods for obtaining the regular grammar counterparts for some sub-classes of the context free grammars (cfg) have been investigated by many researchers. An important class of grammars for which this is always possible is the one-letter cfg. We show in this paper a new constructive method for transforming arbitrary one-letter cfg to an equivalent regular expression of star-height 0 or 1. Our new result is considerably simpler than a previous construction by Leiss, and we also propose a new normal form for a regular expression with single-star occurrence. Through an alphabet factorization theorem, we show how to go beyond the one-letter cfg in a straight-forward way. / Singapore-MIT Alliance (SMA)

Advances in Corporate Householding are needed to address certain categories of data quality problems caused by data misinterpretation. In this paper, we first summarize some of these data quality problems and our more recent results from studying corporate householding applications and knowledge exploration. Then we outline a technical approach to a Corporate Householding Knowledge Processor (CHKP) to solve a particularly important type of corporate householding problem - entity aggregation. We illustrate the operation of the CHKP by using a motivational example in account consolidation. Our CHKP design and implementation uses and expands on the COntext INterchange (COIN) technology to manage and process corporate householding knowled

The aim of the thesis is to investigate the standing of Olympic victor statues in Greece and Rome. The major focus is on how the meaning and the perception of the statues become transformed in different contexts. Throughout the study the reception alongside the location and meaning of athletic sculpture are primary points of concern. The standing of the patron and the viewer with respect to transformed models and their perception in relation to context constitute a significant part while formal details of artistic creativity and workmanship are dealt with only as necessary. It is known that Roman victor sculptures go back to Greek models / however remarkable change is revealed in the context and meaning of display &ndash / such as the emergence of statues for the decoration of private villas or public baths &ndash / rather than major stylistic changes in the statues themselves. So, the goal of the study is to understand how the Romans looked to the past and to Greeks in particular. An attempt is made to understand how Romans used their own values to appropriate and transform earlier Greek models, by focusing especially on the display and context.