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.

Technology evolution throughout history has initiated many changes in different aspects of human activities. Learning, as one of the most representative human activities has also been subject to these changes. Nowadays, the use of information and communication technologies has considerably changed the way people learn and collaborate. These changes have been accompanied by new approaches to support learning using a wide range of mobile devices, software applications and different communication platforms. In these technology rich landscapes, the notion of context emerges as a crucial component to be considered for the design and technical implementation of technology-enhanced learning environments. The main research question investigated in this thesis relates to the use of different context instantiations for the design and development of innovative technology-enhanced learning environments.This thesis is a collection of eight papers that describe the results of the research efforts conducted in four different experimental cases during a period of four years. These experiments have been designed and developed as part of two research projects. The theoretical foundations that guided this research were based on the view of context and interaction from a learning theory, human-computer-interaction perspective, as well as dimensional data modelling techniques. Different methodological approaches, (such as action-oriented, design-based research and case study) have been used while investigating the main research question. The main contribution that this thesis offers to the research community is a conceptual context model accompanied by a dimensional data model that can be used as a design tool for embedding learning activities in context. In the four trials that encompass my empirical work, the conceptual model proposed in the thesis guided the design and technical development of the different novel technology-enhanced learning activities. The outcomes of these efforts provided various insights regarding the use of different context instantiations that have implications for the design and development of these environments. This thesis advocates that computational context attributes should be used as metadata descriptors that would potentially promote personalization and interoperability of digital learning content. Content personalization offers opportunities for personalized learning that increases learners’ engagement and eventually could lead to better learning results. Furthermore, the research and industrial community could use the context model developed in this thesis as a guiding tool to promote the creation of new ways to personalize services and technologies.

Context information brings new opportunities for efficient and effective applications and services on mobile devices. Many existing work exploit the context dependency of mobile usage for specific applications, and show significant, quantified, performance gains by utilizing context. In order to be practical, such works often pay careful attention to the energy and processing costs of context awareness while attempting to maintain reasonable accuracy. These works also have to deal with the challenges of multiple sources of context, which can lead to a sparse training data set. Even with the abundance of such work, quantifying context-dependency and the relationship between context-dependency and performance achievements remains an open problem, and solutions to manage the and challenges of context awareness remain ad-hoc. To this end, this dissertation methodologically quantifies and measures the context dependency of three principal types of mobile usage in a methodological, application agnostic yet practical manner. The three usages are the websites the user visits, the phone numbers they call, and the apps they use, either built-in or obtained by the user from the App Store . While this dissertation measures the context dependency of these three principal types of mobile usage, its methodology can be readily extended to other context-dependent mobile usage and system resources. This dissertation further presents SmartContext, a framework to systematically optimize the energy cost of context awareness by selecting among different context sources, while satisfying the system designer’s cost-accuracy tradeoffs. Finally, this thesis investigates the collective effect of social context on mobile usage, by separating and comparing LiveLab users based on their socioeconomic groups. The analysis and findings are based on usage and context traces collected in real-life settings from 24 iPhone users over a period of one year. This dissertation presents findings regarding the context dependency of three principal types of mobile usage; visited websites, phone calls, and app usage. The methodology and lessons presented here can be readily extended to other forms of context and context-dependent usage and resources. They guide the development of context aware systems, and highlight the challenges and expectations regarding the context dependency of mobile usage.

Context-aware systems can dynamically adapt to user situations to provide smarter services. In general, context refers to the information that can be used to characterize these situations, and context models are deployed to specify contextual information described in context-aware systems. However, even though user context is highly dynamic, existing context models either focus on modeling static views of context or lack appropriate design abstractions to deal with dynamic aspects and interactions involving contextual elements such location, time, user roles, social relationships, and changing preferences. Moreover, virtual environments have not been modelled by most of the existing context models even though online interaction is very common and popular. This thesis presents a dynamic user-centric context model that can be used to model the aspects of context-aware systems that are subject to frequent change. Four case studies are proposed to illustrate the applicability of the approach taken by this thesis, and they are in the domains of mobile e-healthcare, mobile commerce, mobile tourism, and mobile augmented reality gaming. Benefits of the proposed model include avoiding the development of context-aware systems from scratch, enabling future use of model-driven approaches, and reducing implementation effort.

The purpose of this study was to investigate if preferences for high- and low context communication differed significantly between individuals from individualistic and collectivistic cultures, living in a multicultural environment. A quantitative survey was used as method and the survey was answered by 150 students at Jönköping University and Uppsala University. Two self-assessment scales, obtained from previous studies were used to measure the degree of the two cultural dimensions and communication styles. Two multiple regression analyzes were performed to investigate the connection between collectivist cultures preference for high context communication and individualistic cultures preference for low context communication, that has been found in previous studies. Two ANOVAs were also performed to investigate differences in communication style depending on sex and length of stay in Sweden. The results partly confirmed previous research, reporting a significant link between high degree of collectivism and high context communication, as well as a higher preference for high context communication among women. / Syftet med föreliggande studie var att ta reda på om preferensen för hög- och lågkontextuell kommunikation skiljde sig signifikant åt mellan individer från individualistiska respektive kollektivistiska kulturer i en mångkulturell miljö. En kvantitativ enkätundersökning användes som metod och enkäten besvarades av 150 studenter vid Högskolan i Jönköping och Uppsala universitet. Två självskattningsskalor hämtade från tidigare studier användes för att mäta graden av de två kulturdimensionerna och kommunikationsstilarna. Två multipla regressionsanalyser utfördes för att undersöka det samband mellan kollektivistiska kulturers preferens för högkontextuell kommunikation och indvidualistiska kulturers preferens för lågkontextuell kommunikation som påvisats i tidigare studier. Det gjordes även två variansanalyser för att undersöka skillnader i kommunikationsstil beroende på kön, och vistelsetid i Sverige. Resultatet bekräftade delvis tidigare forskning, då det visade ett signifikant samband mellan hög grad av kollektivism och högkontextuell kommunikation, samt en högre preferens för högkontextuell kommunikation hos kvinnor.

Delay-tolerant networks (DTNs) are dynamic networks in which senders and receivers are often completely disconnected from each other, often for long periods of time. DTNs are enjoying a burgeoning interest from the research community largely due to the vast potential for meaningful applications, e.g., to enable access to the Internet in remote rural areas, monitor animal behavioral patterns, connect participants in mobile search and rescue applications, provide connectivity in urban environments, and support space communications. Existing work in DTNs generally focuses either on solutions for very specific applications or domains, or on general-purpose protocol-level solutions intended to work across multiple domains. In this proposal, we take a more systems-oriented approach to DTNs. Since applications operating in these dynamic environments would like their connections to be supported by the network technology best suited to the combination of the communication session's requirements and instantaneous network context, we develop a middleware architecture that enables seamless migrations from one communication style to another in response to changing network conditions. We also enable context-awareness in DTNs, using this awareness to adapt communications to more efficiently use network resources. Finally, we explore the systems issues inherent to such a middleware and provide an implementation of it that we test on a mobile computing testbed made up of autonomous robots. / text

Only one of the hillforts of southern Gwynedd has been submitted to a small excavation, and the forts in this study are quite forgotten in the larger British hillfort research. This thesis explores the forts’ possible uses through an analysis of their landscape setting, accessibility and view, architecture, internal features and archaeological setting. The result of the analysis show a variety of uses , for example related to occupation, trade, exchange or communication, agriculture and pastoralism, defence, religion and ritual. In addition, some larger patterns, connections and pairings of forts also come to light. Hopefully this study will lead to a heightened interest in, and future studies and excavations of the forts of southern Gwynedd.

Categorizing knowledge into different disciplines and units may block knowledge within separate “folders”, which could limit its later retrieval and transfer to new contexts. To test this hypothesis, two experiments had been conducted. In one experiment, participants memorized a list of words with or without cuing which category these words belonged to. One week later, they were asked to recall all the positive adjectives, which required them to retrieve words that came from different categories. In the other experiment, participants read exactly the same story but embedded in two different subject domains or no context. A survey report was presented to test whether people from different contexts would have different transfer effect. The current study replicated previous results that successful transfer was hard to observe in the laboratory settings without explicit prompts. The memory test and transfer task in this study were too difficult and resulted into to the poor performance of the participants. The initial hypothesis had been neither supported nor rejected. To test the hypothesis, future studies could reduce the time interval between study and test, and modified the transfer task to lower the difficulty of the experiment. / text

This thesis examines barriers to the implementation of Lean production systems in China. The aim is to evaluate how implementation barriers affect a Lean production system, and whether they can be explained by Chinese national context factors. The thesis also aims to investigate the mechanisms by which such context factors influence the barriers. A socio-technical systems (STS) perspective is taken to interpret the relative importance of, and the interplay between, the social and the technical barriers to Lean implementation in China. To achieve the aims of the study, a multiple case study approach was chosen. I collected data at two Chinese plants of a globally-operating German automotive supplier in Suzhou and Changsha. As the main method of data collection, I conducted sixty qualitative interviews with Chinese and Western employees during a two month research trip to China. Using an iterative procedure of data collection and analysis, I developed a model that captures barriers to implementing Lean in China, the effects of these barriers on the production system, and influential context factors. Based on respondents perceptions, I identify six main implementation barriers, namely: High employee turnover , Weak supplier performance , Market conditions , Lack of Lean knowledge , Intercultural communication , and Work styles . The analysis highlights the effects of the barriers on specific elements of the Lean production system, and mechanisms by which the context factors influence the barriers. By exploring these mechanisms, I found strong evidence that Chinese context factors act as root causes or catalysts for the implementation barriers. The findings are corroborated through a comparison of the results obtained from the two locations in China, reports by Western and Chinese employees, and respondents at different hierarchical levels of the organisation. Through the Lean implementation model, this research contributes to the literatures on international Lean manufacturing and socio-technical systems. The study is the first to provide detailed empirical evidence of six main barriers, and to describe thoroughly why each barrier was a burden for Lean. The thesis also contributes to the Lean literature by demonstrating how the national context of China can create barriers and therefore play a significant role when implementing Lean in China. The central claim of the study is therefore that implementation barriers do exist in China and that a greater focus on these barriers is required in order to gain a better understanding of Lean implementation in this context. With regard to STS theory, the study highlights that the main perceived barriers to Lean implementation were situated within the social sub-system of Lean, and that some aspects of the barriers were created through a lack of joint optimisation of the social and the technical sub-system. The study therefore shows that STS theory is applicable to the context of Lean systems, and that it facilitates our understanding of barriers to the socio-technical Lean system. The study yields recommendations on managerial strategies for implementing Lean production in China, regarding people management as well as the adjustment of manufacturing facilities. A consideration of the national context can help practitioners to fully understand the causes of implementation barriers in China and, through this, to overcome these barriers. The thesis is concluded by reflecting on its limitations and suggestions for future research.