Information is one the essential elements of science. It is an imperative condition that researchers review antecedent works as they advance and create new knowledge. Knowledge creation in science is a process of adding and refining new pieces of data, information, and knowledge to what has already been accomplished by others. Few scientific communities have unlimited access to scientific information sources. Most communities’ access to information is limited by economic, social, cultural, and technological conditions. This study investigates information seeking behavior and information dissemination practices of the Venezuelan scientific community. A model of scholarly communication in a context of dependency emerges from the following major themes: persisting interpersonal communication with the international scientific community; publication in international journals; prestige and name recognition; and contacting the authors to access full-text journal articles. A qualitative approach is used to illuminate the information seeking behavior of scientists in Venezuela, to discover the barriers experienced by the Venezuelan scientific community when accessing scientific information, and to explore their scientific information dissemination practices. Interviews were conducted in July 2009 with thirteen Venezuelan scientists from the fields of biology, chemistry, or physics. Interviews were recorded, transcribed, and analyzed in Spanish. Coding, categories, data analysis, and theory building followed a general inductive approach.

Syftet med studien har varit att undersöka hur arbetsterapeuter går till väga för att genomföra en informationsöverföring till alla personliga assistenter hos en brukare samt hur arbetsterapeuter anser att informationsöverföringen till personliga assistenter fungerar. En kvalitativ ansats valdes och informationen inhämtades via intervjuer med 9 arbetsterapeuter i öppenvården i Västmanlands och Gävleborgs län. Resultatet visar att: det är få av arbetsterapeuterna som tycker att informationsöverföringen fungerar riktigt bra. Flertalet anser att det är lättare att nå fram och få en bra kommunikation med de personliga assistenterna om de är intresserade och insatta i sitt arbete. Arbetsterapeuterna beskriver att informationsöverföringen sker utifrån varje enskilt fall och hur många som är närvarande beror på vad som arbetsterapeuten vill informera om. Valet av tillvägagångssätt och hur många som man träffar inom gruppen beror mycket på vad ärendet handlar om och vilken kompetensnivå som de personliga assistenterna har. Att nå fram till alla i gruppen med information är svårt, eftersom de personliga assistenterna oftast jobbar på olika tider. Det är också svårt att veta vilka som tar eller får del av informationen då det inom vissa grupper ofta byts personal. Det är nästan uteslutande arbetsterapeuten som tar initiativ till uppföljning genom att ringa och fråga hur det har gått. Författarna kan konstatera att arbetsterapeuterna är flexibla, arbetar med både offensiv och defensiv informationsöverföring beroende på de personliga assistenternas kunskapsnivå. I sitt informationsgivande förhållande till de personliga assistenterna använder sig de flesta arbetsterapeuterna av den induktiva principen (Christensen och Jensen 2004) genom att utgå ifrån det enskilda ärendet i informationsöverföringsstillfället. Vid framtida studier av ämnet bör även de personliga assistenternas bild av informationsöverföringsprocessen delges för att ge en bredare bild av processen.

The main problem in this thesis is: How should research and development results regarding production methods be represented for better adoption by SMEs? Manufacturing SMEs in Sweden have in general low profit margins and risk to go bankrupt. Different production methods could facilitate the needed performance improvement. Networking provides an arena where research and development needs could be determined and effective transfer activities could be carried through. How new production methods could be characterized and represented are presented. Several case studies, surveys and literature studies have been carried through. The results from these studies have been analyzed and compared to literature on the production method diffusion process – Dissemination-Clustering-Transfer. This analysis has resulted in a specification of requirements on how new production methods should be presented for better adoption by SMEs. One suggestion to the specification of requirements, the DFMTsme process, is described. The process is based on a repeated development procedure and follows a six-step development process in five phases. It is concluded that the DFMTsme process works. The research project is finally reviewed due to verification, validation and the contribution to knowledge. Implications for actors in the production method diffusion process as well as for policy makers are discussed. / QC 20100729

Experience feedback from accidents is important for preventive work in companies, authorities and other organisations. This thesis focused on experience feedback from accidents that take place in everyday life, in our neighbourhoods, in our workplaces, in our schools, in traffic and transportation. Essay I is an overview of the literature on learning from accidents and incidents. The focus in this essay is on literature that evaluates the effectiveness and usefulness of different methods in accident investigations. Conclusions drawn from this literature review are that the dissemination of results and knowledge from accident investigations must be improved, and experience feedback systems should be integrated into overall systems of risk management. Essay II is based on an evaluation of the investigation board for workplace accidents (HAKO) that was carried out on commission of the Swedish Work Environment Authority. It was concluded that the accident reports published by HAKO had a high qualitative level but the dissemination of results from the investigations was weak. Essay III investigates twenty-eight supervision cases from eleven Swedish local Environment and Health Administrations. The overall goal of the study was to find out how, and to what extent, experience feedback occurs in Swedish municipalities. Two major problems relevant for the experience feedback have been found; namely that the inspectors do not have enough guidance on how to interpret the law and that they would like more information on what happens to legal cases that they have handed over to the public prosecutors and the police. Essay IV is a document study of incident reports from two municipal fire and rescue services. The overall purpose of this study was to investigate if information from the rescue services could be used to improve experience feedback in sectors where it is weak or non-existent. In the 1120 incident reports that were studied, we found 217 proposals for improvement but these proposals were not used for experience feedback. It is concluded that the reports contain valuable information but this information is not used to prevent future accidents. Essay V investigates experience feedback in Swedish authorities working with accident prevention. The essay is based on two interview studies. In the first study, 21 Swedish authorities participated, and several of these authorities seem to have a functioning experience feedback despite the lack of systematic routines and methods. Yet, only four of the 21 authorities actually handle the whole experience feedback process. These four have at least one common denominator; they have an experience feedback that is turning more inwards than outwards. The second study was a follow-up study of some of the results from the first study, concerning the dissemination of results from experience feedback. / QC 20101209

The high prevalence of back and neck pain results in enormous social, psychological, and economic burden. Most seeking help for back or neck pain consult general practitioners or chiropractors. Chiropractic is a regulated health profession (serving approximately 10 – 15% of the population) that has contributed to the health and well-being of North Americans for over a century. Despite available evidence for optimal management of back and neck pain, poor adherences to guidelines and wide variations in services have been noted. For instance, overuse and misuse of imaging services have been reported in the chiropractic literature. Inappropriate use of spine imaging has a number of potential adverse outcomes, including inefficient and potentially inappropriate invasive diagnosis and subsequent treatment, and unnecessary patient exposure to ionizing radiation. Although evidence-based diagnostic imaging guidelines for spinal disorders are available, chiropractors are divided on whether these guidelines apply to them. While guidelines can encourage practitioners to conform to best practices and lead to improvements in care, reviews have demonstrated that dissemination of guidelines alone is rarely sufficient to optimise care. Evidence regarding effective methods to promote the uptake of guidelines is still lacking. There is growing acceptance that problem analysis and development of interventions to change practice should be guided by relevant theories and tailored to the target audience. To date, very little knowledge translation research has addressed research-practice gaps in chiropractic. This thesis reports rigorous methods to: (1) assess practice and providers’ characteristics, (2) determine baseline rates and variations in spine x-ray ordering, (3) evaluate the impact of disseminating guidelines to optimise spine x-ray ordering, and (4) assess determinants of spine x-ray ordering and potential targets for change prior to the design of a tailored intervention. A mixed method using two disciplinary perspectives (epidemiology and psychology) was undertaken. A cross-sectional analysis of administrative claims data was carried out on a sample of chiropractors enlisted in a large American provider network. Despite available clinical practice guidelines, wide geographical variations in x-ray use persist. Higher x-ray ordering rates were associated with practice location (Midwest and South US census regions), setting (urban, suburban), chiropractic school attended, male provider, employment, and years in practice. The impact of web-based guideline dissemination was evaluated over a five year period using interrupted time series and demonstrated a stepwise relative reduction of 5.3% in the use of x-rays. Passive guidelines dissemination appeared to be a simple, cost effective strategy in this setting to improve but not optimise x-ray ordering rates. Focus groups using the theoretical domains framework were conducted among Canadian and US chiropractors to explore their beliefs about managing back pain without x-rays. Findings were used to develop a theory-based survey to identify theoretical constructs predicting spine x-ray ordering practice. Psychological theories and theoretical constructs explained a significant portion of the variance in both behavioural simulation and intention. Results from this thesis provide an empirically-supported, theoretical basis to design quality improvement strategies to increase guidelines adherence and promote behaviour change in chiropractic. Other researchers interested in improving uptake of evidenced-based information could use this method in their own setting to investigate determinants of behaviour among other professional groups. Future research may use knowledge gained to inform the development and evaluation of a theory-based tailored intervention to improve guideline adherence and reduce the use of spine x-rays among targeted providers.

The Publish/Subscribe (pub/sub) model has been widely applied in a variety of application scenarios which demand loose-coupling and asynchronous communication between a large number of information sources and sinks. In this model, clients are granted the flexibility to specify their interests at a high level and rely on the pub/sub middleware for delivery of their publications of interest. This increased flexibility and ease of use on the client side results in substantial complexity on part of the pub/sub middleware implementation. Furthermore, for several reasons including improved scalability, availability and avoiding a single point of failure, the pub/sub middleware is commonly composed of a set of collaborating message routers, a.k.a. brokers. The distributed nature of this design further introduces new challenges in ensuring end-to-end reliability as well as efficiency of operation. These challenges are largely unique to the pub/sub model and hence absent in both point-to-point or multicast protocols. This thesis develops solutions that ensure the dependable operation of the pub/sub system by exploiting the notion of overlay neighborhoods in a formal manner. More specifically, brokers maintain information about their neighbors within a configurable distance in the pub/sub overlay and exploit this knowledge to construct alternative forwarding paths or make smart forwarding decisions that improves efficiency, bandwidth utilization and delivery delay, all at the same time. Furthermore, in the face of failures overlay neighborhoods enable fast reconstruction of forwarding paths in the system without compromising its reliability and availability. Finally, as an added benefit of overlay neighborhoods, this thesis develops large-scale algorithms that bring the advantages of the pub/sub model to the domain of file sharing and bulk content dissemination applications. Experimental evaluation results with deployments as large as 1000 nodes illustrate that the pub/sub system scales well and outperforms the traditional BitTorrent protocol in terms of content dissemination delay.

Wireless sensor networks (WSNs) are now widely used in many applications. Connected Dominating Set (CDS) based routing which is one kind of hierarchical methods has received more attention to reduce routing overhead. The concept of k-connected m-dominating sets (kmCDS) is used to provide fault tolerance and routing flexibility. In this thesis, we first consider how to construct a CDS in WSNs. After that, centralized and distributed algorithms are proposed to construct a kmCDS. Moreover, we introduce some basic ideas of how to use CDS in other potential applications such as partial coverage and data dissemination in WSNs.

Collage students’ news consumption has been a very popular research topic in media in pastfew years. But students’ involvement in news dissemination remained unnoticed andunexplored, especially in relation to democratic engagement. This study provides an overviewin this respect along with news consumption. The research reports the outcome of a surveyconducted among 124 Swedish college students, aged between 18 and 24, in spring 2012. Thestudy investigates college students’ news consumption and news dissemination of in terms ofmotives. The analysis suggests that motivations behind collage students’ news consumptionare independent of channels/media. Consumption motives appear to be similar betweentraditional and contemporary news media. Furthermore, news consumption and newsdissemination seem to be driven by completely different motives.

As computers become pervasive and better connected, the popularity of peer-to-peer computing has grown immensely. The sharing of unused resources at peers is desirable and practically important because they can collectively comprise a powerful system. The potential benefit, however, can be undermined by uncooperative behavior of some peers because they are managed individually and hence may not follow the expected protocols. To build robust systems, we must incorporate proper trust and incentive mechanisms so that peers would rather cooperate. In this dissertation, we demonstrate that building robust peer-to-peer information dissemination systems is important and viable, using four concrete cases. First, we investigate the incentive mechanism of BitTorrent, an exchange-based file distribution protocol. Our framework based on iterated prisoner's dilemma provides an insight into users' tension between eagerness to download and unwillingness to upload. By using both analytical and experimental approaches, we show that the current incentive mechanism of BitTorrent is susceptible to free riding. We propose an improved mechanism that punishes free riders effectively. Second, we present a trust-aware overlay multicast system that performs well in the presence of uncooperative nodes, which may block, delay, fabricate, or forge the messages they forward. We develop (1) a set of protocols that detect uncooperative behavior, (2) a scheme of trust value assignment according to the behavior of nodes, and (3) an algorithm that adapts the multicast tree based on trust values, all of which allows the system to remain stable and responsive over time. Third, we propose an alternative news feed dissemination system, called FeedEx, in which feed subscribers mesh into a network and exchange news feeds with neighbors. The collaborative exchange in FeedEx, with the help of the incentive-compatible design using the pair-wise fairness principle, reduces the server load and hence increases the scalability. Fourth, we introduce a new concept of peer-to-peer computing, that is, continual service using ephemeral servers. To this end, we develop a system model for the concept and implement a discrete-time simulator to find the conditions and the system support for eliciting cooperation. All four cases are substantiated by experimental results.

Abstract Intuition is one of human¡¦s instincts. It plays a major part in our daily decision-making. However, people experience intuition to different extents. Some may have deeper experience than others. Some may depend much on intuition in making decisions, while others tend to depend more on reason. Although there is risk in intuitional decision-making, many chiefs of businesses believe that intuition can be reliable for decision-making and therefore have made good achievements. The study investigated the intuition-experiential ability and intuition-experiential engagement of the chiefs in Kaohsiung¡¦s metals model industries and the degree of trust for intuitional decision-making of practical management on their company. The study found that the chief¡¦s age and years of service are not related to their trust in intuitional decision-making; intuition-experiential ability is also not related to their trust in intuitional decision-making. However, the intuition-experiential engagement is related to their trust in intuitional decision-making. The academic contribution this study makes is arranging intuitional conceptions and developing intuitional decision-making model, so that people can understand intuition better and come to have faith in intuition. Moreover, it raises Taiwanese people¡¦s interest in the research of intuition. This study concludes that, in aspect of practice of enterprises, chiefs can trust more in and make use of their intuition.