Dissertations / Theses on the topic 'Technical Communication|Information Science|Computer Science'

Extrinsic motivation may affect knowledge sharing in a virtual community. As virtual communities have become ubiquitous, understanding knowledge sharing in virtual communities has become very important. Knowledge sharing is one of the factors that allow virtual communities to be viable. This study sought to observe knowledge sharing in a virtual community, which does not use extrinsic motivation techniques as incentives to share knowledge. This correlation study used a framework that included the elements of social capital and outcome expectations. This study found that extrinsic rewards over time appear not to be important in knowledge sharing. The long term effect may be that extrinsic rewards are much less important than the design of the virtual community and the internal motivation of the members of the virtual community. One-hundred and thirty-three persons participated in this study.

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1986.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING
Bibliography: leaves 125-130.
by Kevin Broderick Fitzgerald.
M.S.

Large organizations continue to outsource information technology services as a method of cost-savings rather than knowledge acquisition. This prioritization leads to failed sourcing projects and increases in overhead expenses. The purpose of the study was to achieve a consensus in regard to an effective staffing balance and collaboration in information services outsourcing. The study canvassed an expert panel of 49 IT professionals in a 3-round Delphi study. This study provided understanding of the internal IT professionals’ relationship with domestic contractors and offshore resources. Information was gathered from IT professionals with experience working with external partners. The study explored procedures to enhance outsourcing models. This was completed by answering the research questions: (R1) what do IT professionals perceive is an appropriate balance of internal staff, domestic contractors, and offshore resources in a global organization? In addition, (R2) when collaborating with external support, what communication and collaboration techniques should be integrated into a sourcing strategy? A qualitative Delphi method was followed, and participant’s responses were analyzed to achieve research findings.

Recommendations were to maintain a 50% to 70% staff of internal employees, have the domestic contract labor equal to offshore labor, and maintain open, frequent communication with external partners. Over-outsourcing passes too much knowledge to the external partner, reduces internal knowledge, and creates a dependency on the external firm. These issues can be overcome by increasing collaboration across firms. Project managers should closely monitor the performance of external teams. IT organizations should acquire external resources based upon skills first, and costs second. Management should integrate firms to ensure the parent organization retains critical knowledge.

The study explores a set of genre-hybrid reviews, 1999-2001, characterised by a standpoint of ecological rationality, and produced by a professional writer for a professional environmental management organisation. The interaction between such managers has not been studied before in terms of professional communication and was delineated as a new field of enquiry. The issues of tact and Face were important for this organisational community, which shared characteristics of contact communities and Communities of Practice. Methods used derive from studies of text in context, and organisational communication. The assembly of theoretical material is one outcome of the study, which tackled three questions: 1 To assess in what way the reviews made a contribution to the organisation, Weick's equivoque and the notion of the Fractal were combined to explain the text as an active organ for collaborative organisational learning and knowledge management. Thereby the texts are presumed to have contributed to the organisation's goal to enhance knowledge and practice in environmental management among managers drawn from diverse intellectual backgrounds. 2 To address the question of the technical characteristics of the reviews, narrative polyphony concepts provided suspension dialogia, which complemented the notion of translation suspension. 3 To address how the reviewer had managed to reproduce organisational patterns despite his inconsistent moral standpoint, the search for a theoretical position travelled through code-switching, pragmatics and translation, emerging with a concept similar to intersemiosis, labelled 'codehandling'. The combination of questions produced complex answers. Translation constructs, such as dynamic equivalence, increasingly emerged as productive and suitable to complement emerging endogenous approaches in environmental management literature. The genre-hybrid is argued to have altered the social function of the review. In prioritising interaction, it put at risk the organisation's strategic tact 10 structure. Nevertheless, the reviewer managed the risk within acceptable limits and produced popular and successful reviews.
Thesis (Ph.D.)--School of Humanities, 2004.

Thesis (MPhil)--University of Stellenbosch, 2004.
ENGLISH ABSTRACT: Science forms an integral part of our lives. It is tied to social practices, public policies and political affairs. Yet, very little is reported on it unless it is making hard news. This thesis was written from the premise that the public requires as much accurate information as possible to make choices and decisions. In many instances, they solely depend on the news media to supply that information. Journalists have a responsibility to reflect and explain the complexity of a world that is increasingly influenced by science. In Namibia the establishment of conservancies under the CBNRM programme of government, have an influence on many rural people's lives who would previously not have been too concerned about science news. Through the Media and Publicity Strategy of the CBNRM programme, communication of the environmental message of conservancies has been successful to a large extent, especially in terms of reportage in the local press. The messages conveyed in the press have been overwhelmingly positive and supportive of the system. From the perspective of the level of journalism practised in this regard, the effort has not been that great. Publications in Namibia operate on very limited budgets and have to manage with a minimum number of reporters. This means journalists are expected to cover a range of different beats, and are seldom offered the opportunity to develop as specialist writers in specific fields. The field of science and environment is generally not regarded as an area that produces hard news on a regular basis. This was evident in the articles reviewed for the purposes of this thesis. The majority of stories were written from press releases or field trips organised by the CBNRM programme organisers. Stories that were self-generated were not very well researched, or did not follow through on potential hard news angles or ideas. In a world of war, hunger, poverty, diseases and many other tragedies, the story of the development of communal conservancies is a wonderfully positive story that highlights the success of sustainable development, the upliftment of the rural poor and achievements in terms of conservation. It is a welcome change for journalists to tell a positive story to the world. However, as journalists should know, every story has two sides. The purpose is not necessarily to find fault with the conservancy philosophy or to shoot it down or find sensationalism where it is not due. Their role is to present a full, unbiased account of the facts so that their readers can make up their own minds on whether they support the concept, or not. If journalists failed to inform their readers about the problems experienced by the implementation of conservancies, then they have failed to give their readers the full picture. The conclusions drawn in this thesis on the level of science or environmental reporting in Namibia, serve to emphasise the urgent need for specialist writers in the profession. A handful of dedicated and committed science writers that increasingly raises the level of reporting will make a vast difference in the fields of science and environment in Namibia.
AFRIKAANSE OPSOMMING: Wetenskap vorm 'n integrale deel van ons lewens. Dit is gebind aan sosiale gebruike, openbare beleidsrigtings en politieke sake. Tog word daar baie min daaroor geskryf, behalwe wanneer dit harde nuus is. Hierdie tesis is geskryf vanuit die oogpunt dat die publiek soveel as moontlik akkurate inligting nodig het om keuses te maak. In baie gevalle vertrou hulle uitsluitlik op die nuus media om daardie inligting te verskaf. Joernaliste het 'n verantwoordelikheid om 'n wêreld wat al hoe meer beïnvloed word deur wetenskap te verduidelik. In Namibië het die daarstelling van bewareas deur die CBNRM-program van die regering, 'n groot invloed op die lewens van baie plattelandse mense se lewens gehad wat voorheen nie veel sou omgegee het oor wetenskapnuus nie. Die daarstelling van bewareas het 'n hele nuwe wêreld met baie nuwe uitdagings tot by hulle voordeur gebring. Dit was belangrik om hulle genoegsaam in te lig oor die voor- en nadele van die stelsel om hulle in staat te stelom te besluit of hulle wou betrokke raak of nie. Die boodskap wat die pers oorgedra het, was oorweldigend positief met baie steun vir die stelsel. Vanuit 'n joernalistieke perspektief gesien, was die beriggewing rue so noemenswaardig nie. Publikasies in Namibië werk met baie beperkte begrotings en moet klaarkom met 'n minimum aantal verslaggewers. Dit beteken daar word van joernaliste verwag om oor 'n wye verskeidenheid onderwerpe te skryf. Wetenskap- en omgewingsberiggewing word oor die algemeen gesien as 'n gebied wat nie werklik harde nuus op 'n gereelde basis produseer nie. Dit het duidelik gebleik uit die artikels wat ontleed is vir die doel van die tesis. Die meerderheid van die stories is geskryf van persverklarings en uitstappies georganiseer deur die CBNRM. Die stories wat wel self gegenereer is, was nie baie goed nagevors rue. In 'n wêreld van oorlog, hongersnood, armoede en siektes, is die ontwikkeling van . bewareas 'n wonderlike positiewe storie wat dien as bewys van die sukses van volhoubare ontwikkel, die opheffmg van plattelandse arm mense en wat bereik kan word met bewaring. Dit is 'n welkome verandering vir joernaliste om vir 'n slag 'n positiewe storie aan die wêreld te vertel. Maar, soos joernaliste behoort te weet, het elke storie twee kante. Die doel van 'n joernalis is nie noodwendig om fout te vind met die filosofie van bewareas nie, of om dit af te skiet of sensasie te soek waar dit nie nodig is nie. Hulle rol is om 'n volledige, onsydige verslag van die feite weer te gee sodat hulle lesers self kan besluit of hulle die konsep ondersteun of nie. As joernaliste daarin gefaal het om hulle lesers in te lig oor die probleme wat ondervind is met die implementering van bewareas, dan het hulle daarin gefaal om die volledige prentjie aan hulle lesers te skets. Die slotsom van die tesis oor die vlak van wetenskap- en omgewingsjoernalistiek in Namibië is dat daar 'n dringende tekort aan spesialis skrywers in die professie is. Selfs net 'n handvol toegewyde wetenskapskrywers sal al klaar 'n groot verbetering bring in die kwaliteit van verslaggewing in die wetenskap- en omgewingsvakgebied in Namibië.

The thesis explores the potential of one way of facilitating and stimulating collaboration in Library and Information Science (LIS), through a specific scientific collaboration activity: creating, sharing and reusing data collection instruments, such as interview guides, questionnaires, and observation protocols. The four studies reported in the thesis can be read as a linear narrative, each study building on the previous and contributing to the following ones. Together the four studies describe the process exploring social and contextual aspects of LIS; developing requirements and designing a working prototype collaboratory; and evaluating how the prototype collaboratory was perceived by LIS professionals. Overall, the results show that whereas the benefits of an LIS collaboratory reported by the study participants focused on the greater good for LIS, the challenges reported focused on the individuals’ perspectives. Hence, a tension exists between supporting the greater good, and challenges for individuals concerning sharing and reusing data collection instruments in an LIS collaboratory. The thesis emphasizes the implications for the LIS discipline when new ways of working with data collection instruments would be introduced; the implications of addressing needs of a diverse target audience; and the implications for further design iterations of an LIS collaboratory, including rewarding contributions, and ensuring quality content in a collaboratory.

Academic dissertation for the Degree of Doctor of Philosophy in Library and Information Science at the University of Gothenburg and the University of Borås to be publicly defended on Wednesday 11 June 2014 at 13.15 in lecture room E310, University of Borås, Allégatan 1, Borås

This research proposes a framework for adaptive information security systems that considers both the technical and social aspects of information systems security. Initial development of information systems security focused on computer technology and communication protocols. Researchers and designers did not consider culture, traditions, ethics, and other social issues of the people using the systems when designing and developing information security systems. They also seemed to ignore environments where these systems run and concentrated only on securing parts of the information systems. Furthermore, they did not pay adequate attention to the enemies of information systemsand the need for adaption to a changing enviroment. The consequences of this lack of attentions to a number of important factors have given us the information security systems that we have today, which appear to be systemically insecure.   To approach this systemic insecurity problem the research was divided into mini studies that were based on the Systemic-Holistic paradigm, Immune System concepts, and Socio-Technical System theory. Applying the holistic research process the author started first by exploring adaptation systems. After exploring these systems, the focus of the research was to understand the systems and features required for making information security systems learn to adapt to the changing environments. Designing and testing the adaptive framework were the next steps. The acquired knowledge from this research was structured into domains in accordance to ontological principles and relationship between domains was studied. These domains were then integrated with the security value-based chain concept, which include deterrence, prevention, detection, response, and recovery functions to create a framework for adaptive information security systems.   The results of the mini studies were reported in a number of papers, which were published in proceedings of international conferences and a journal. For this work, 12 of the thesis papers are included. A framework for adaptive information security system was created. Trials to apply and validate the framework were performed using three methods. The first method was a panel validation, which showed that the framework could be used for providing adaptive security measures and structuring  security work. The second method mapped the framework to the security standards, which showed that the framework was aligned with the major information systems security standards. The third and last validation method was to map the framework with reported ICT crimes cases. The results indicated that most crimes appear to occur because the security systems in place lacked deterrence security measures and had weak prevention, detection, and response security measures. The adaptive information security systems framework was also applied to a number of areas including a secure e-learning, social networks, and telemedicine systems.   It is concluded in this thesis that this adaptive information security system framework can be applied to minimize a number of  systemic insecurity problems and warrants more applied research and practical implementations.
Q 20110608

Existing literature indicates that although both academics and practitioners recognize knowledge management (KM) as a source of competitive advantage, users are not always willing to use a knowledge management system (KMS). Because of the social nature of knowledge transfer, a KMS can be considered a socio-technical system. Many explanations have been presented for this failure to utilize the KMS. These explanations include a number of the socio-technical factors relating to people, processes, and technologies. While these factors may have significant explanatory power when examined independently, existing studies have not sufficiently addressed the interactions among all three socio-technical factors or their impacts on KMS usage. The goal of this study was to develop a comprehensive understanding of socio-technical factors that impact KMS usage within decision support systems (DSS). A comprehensive framework was presented that will be helpful in developing and improving KMS initiatives and thus improving KM across the organization. This study identified factors of people (self-efficacy, social ties, and ease of use), processes (leadership, culture/climate, and governance), and technologies (system & information quality, and technology fit) and their influence on KMS system usage. Analysis for this problem required a causal, non-contrived field study employing structural equation modeling. Founded on socio-technical systems theory, nine hypotheses were proposed. Data was collected using a 36 item survey distributed to KMS users from a variety of industries in the United States. Confirmatory factor analysis and an eight-stage structural equation modeling procedure were used to analyze 97 usable responses. The results confirmed that technology-oriented factors predicted knowledge seeking and contributing in DSS. Furthermore, significant positive relationships were confirmed between certain sociotechnical factors including: (1) people and process, (2) people and technology, (3) processes and technology, (4) processes and people, (5) technology and people, and (6) technology and processes. These findings extend the relevance and statistical power of existing studies on KMS usage. This study indicated that the most important concerns for increasing KMS usage were system quality, information quality, and technology fit. Results also confirmed that in the context of this study, people-oriented factors (self-efficacy, social ties, and ease of use/usefulness) and organizational process factors (leadership, organizational culture/climate, and governance) were not critical factors directly responsible for increasing KMS usage. However, the relationships among socio-technical factors all had positive significant relationships. Therefore, investments in people and process-oriented factors will create a more favorable perspective on technology-oriented factors, which in turn can increase KMS usage. On a practical front, this study provided indicators to managers regarding a number of desirable and undesirable conditions that should be taken into consideration when developing or implementing knowledge management initiatives and the systems to support them. This study offered an original contribution to the existing bodies of knowledge on socio-technical factors and KMS usage behavior. The constructs presented in this study highlighted the significance of social and technical relationships in understanding knowledge seeking and contribution in a decision-driven organization.

Thesis (MPhil) -- Stellenbosch University, 2004.
ENGLISH ABSTRACT: Background: Cloning is a topic that has long fascinated people. It has imbedded itself into popular culture, but studies show that the general public has, at best, only a vague understanding of what cloning entails. Alternatively, their perception has been skewed by that very same popular culture. However, cloning is a complex scientific subject that has considerable ethical implications. It is the kind of topic that people in a deliberate democracy should know about. The media play an important role in the education of the public with regards to science and technology. However, the media have the potential to do more than provide the basic facts. In fact, the media can play an important role in influencing the actions and opinions of the public. It is therefore a responsibility of the media to provide accurate information on scientific developments, such as cloning. Objective: An analysis of three daily newspapers in the Western Cape was carried out to determine how cloning is reported. The broad topics addressed were whether the coverage focused on the ethical or scientific aspects of cloning, if the subject was reported in a positive or negative tone, and whether the science of cloning was adequately explained. Methodology: A quantitative content analysis was completed of a sample of 69 articles. These articles were all those relating to cloning that appeared in three daily newspapers (Cape Argus, Cape Times and Die Burger) over a period of one year from 10 November 2002 to 10 November 2003. Findings: Of all the articles analysed 34% focused on the scientific aspects, 21% focused on the ethical aspects, 6% focused on both ethics and science, while 39% focused on neither. Fifty two percent of articles dealing specifically with animal cloning focused on the science, while only 4% focused on the ethics. However, in articles dealing specifically with human cloning, more (30%) emphasised ethical aspects than scientific aspects (20%). With regards to tone of coverage, 32% of all the articles analysed were positive, 28% negative, and 40% neutral. Sixty percent of articles dealing specifically with animal cloning featured a positive tone, while only 13% of articles exclusively about human cloning had a positive tone. This 13% was comprised of articles on therapeutic rather than reproductive cloning. In terms of explaining the science associated with cloning, only 30% of articles provided an explicit explanation. Potential threats to the accuracy of explaining science were found to exist. Conclusions: While the overall findings were somewhat indistinct it seemed that when the media of the Western Cape reported on the cloning of animals it was done with a positive tone and emphasised the scientific aspects. Reporting on human cloning tended to feature a negative tone and emphasised the ethical aspects. The large number of ‘neutral’ results for both the ‘tone’ and 'science or ethics’ variables could indicate that the media were wishing to remain neutral. However, the large number of neutral articles relating to the ‘science or ethics’ variable could have a negative impact on public understanding. The small number of articles explaining cloning and an emphasis on ‘breakthrough’ news stories could also have a negative impact on public understanding.
AFRIKAANSE OPSOMMING: Agtergrond: Kloning is ‘n onderwerp wat die mensdom lank interesseer. Maar selfs al vorm kloning ‘n deel van ons populere kultuur, wys navorsing dat die groot publiek maar vaagweg verstaan wat die onderwerp behels. Dit is ook moontlik dat hul persepsie negatief bemvloed is deur dieselfde populere kultuur. Maar kloning is ‘n komplekse wetenskaplike onderwerp met aansienlike etiese gevolgtrekkings. Dit is ‘n onderwerp waarvan mense in ‘n demokratiese samelewing moet weet. Die media speel ‘n belangrike rol in die groot publiek se opleiding in wetenskap. Maar die media het die potensiaal om meer te doen as net die basiese feite deur te gee. Die media het die potensiaal om die gedrag en menings van die publiek te beTnvloed. Daarom is dit die verantwoordelikheid van die media om akkurate inligting oor wetenskaplike ontwikkelings, soos kloning, te voorsien. Dolewit: Drie daaglikse koerante in die Weskaap is geanaliseer om te bepaal hoe kloning gedek word. Daar is bepaal of die artikels op die etiese of wetenskaplike aspekte van kloning fokus, of die onderwerp in ‘n positiewe of negatiewe toon gedek is, en of die wetenskaplike aspekte doeltreffend verduidelik is. Metode: ‘n Kwantitatiewe inhoudsanalise van 69 artikels is voltooi. Die geanaliseerde artikels is al die oor kloning wat in drie daaglikse koerante (Cape Argus, Cape Times en Die Burger) tussen 10 November 2002 en 10 November 2003 verskyn het. Bevindinge: Van die artikels het 34% net op die wetenskaplike aspekte van kloning gefokus, 21% net op die etiese aspekte, en 6% op beide etiek en wetenskap. Geen van die twee aspekte is in 39% van artikels beklemtoon nie. Van die artikels wat spesifiek oor dierkloning geskryf is, het 52% op die wetenskaplike aspekte gefokus. Net 4% het op die etiese aspekte gefokus. In die geval van artikels oor die kloning van mense, het meer (30%) die etiese aspekte as die wetenskaplike aspekte (20%) beklemtoon. Met betrekking tot die toon, was 32% van al die artikels positief, 28% negatief, en 40% neutraal. In die geval van artikels uitsluitlik oor dierkloning het 60% ‘n positiewe toon gedui, terwyl net 13% van artikels oor menslike kloning in ‘n positiewe toon geskryf was. Die 13% het bestaan uit artikels oor terapeutiese kloning. Geen artikels oor reproduktiewe kloning was met ‘n positiewe toon geskryf nie. Net 30% van artikels het ‘n uitdruklike verduideliking van die geassosieerde wetenskap gegee. Daar is moontlike bedreigings tot die akkuraatheid van wetenskaplike verduidelikings gevind. Gevolgtrekkings: Die algemene bevindinge is ietwat onduidelik maar dit blyk dat die daaglikse koerante van die Weskaap ‘n positiewe toon in hul dekking van dierkloning gebruik het. Die wetenskaplike aspekte van dierkloning was in die artikels beklemtoon. Berigte oor menskloning was in ‘n negatiewe toon geskryf en het die etiese aspekte daarvan beklemtoon. Die groot hoeveelheid ‘neutraal’ resultate vir die ‘toon’ en ‘wetenskap of etiek’ veranderlikes dui moontlik dat die media probeer het om neutraal te bly in hul dekking. Die groot hoeveelheid ‘neutraal’ artikels vir die ‘wetenskap of etiek’ veranderlike kan dalk ‘n negatiewe invloed op publieke begrip van kloning he. Die klein hoeveelheid artikels wat kloning verduidelik, en ‘n klem op ‘deurbraak’ nuusstories kan ook dalk ‘n negatiewe invloed op publieke begrip he.

The essence of an effective knowledge transfer process for a technical organization cannot be overemphasized. It does not only translate to its advancement but also improves the learning capacity of the staff in the organization.

The purpose of this work is to analyze and diagnose the current process of technical knowledge transfer

It goes further to proffer a suitable model of design process for the technical instructions (which is one form of knowledge that is present in the organization) so as to improve not only the instructional manual but also the processes involved.

The instructional model is a model gotten from the field of instructional technology (a sub-sect of educational technology) which is used to achieve this feat.

Since organisations are expanding geographically the need for global applications has become extensive. This work examines how a global support organisation should be organised, with respect to communication and technical aspects, when providing support for a global application to a user organisation. This work has been accomplished through a literature study and an interview study. The result from the investigation shows that a decentralised support organisation is superior to some extent. Specially when it comes to communication but both the literature and the respondents claim that communicating with people from different countries with different languages is something you get used to over time. It is however not superior to implement too many sites since it is expensive to have several support centres. The conclusions of this work are that the literature claims that decentralisation is the approach to have if the infrastructure is in place, the respondents however, believe that it is too expensive to decentralise too much.

Electronic mail, email, is one of the most widespread computer applications today.While email in general is very popular among its users, there are also drawbacks withemail usage: an increasing amount of messages that overwhelm users, systems that aretoo complex for naive users and at the same time do not support the needs of experiencedusers.In order to answer the main research question “Which design solutions couldimprove the situation of individual email users in a working context when it comes tocommunication and handling large numbers of incoming and stored email messages?”three studies conducted in email users’ working environment are described. The studiedorganisations are one academic research laboratory, one technical company, andone primary medical service organisation. The studies are focused on email usage,organisation of email messages, novice versus experienced users’ needs, managers’email usage, and information and communication overflow.The results indicate that the different strategies used to handle email are a matter ofa balance between advantages and disadvantages of these strategies. The choicebetween them is depending on the users’ total work situation and cannot be understoodby investigating the email communication alone.One advantage of email is the cognitive comfort it brings to its users by liberatingthem from thinking about tasks that can be solved by sending an email message, butthis advantage disappears when the sender cannot trust that the receiver will act uponthe message.Users develop their handling of email with experience and work position. Themedia that managers use to handle the increased communication that follows with ahigher position are email and meetings. One habit that do not change with position isto allow incoming messages to interrupt other work tasks, despite the asynchronousnature of email. This is particularly remarkable for managers who often complain thatthey need more uninterrupted time. The interruptions may partly be attributed to thelack of functionality in email systems to adapt the interfaces to the users’ work habits.In this case incoming messages result in a signal regardless the importance of them.Email is a part of an information and communication flow. Some users have problemshandling this flow. Overflow problems could be diminished by making senders ofmessages more aware of the receivers’ communicative situation. Email systems couldprovide feedback to senders of messages based on the receivers’ perception of his/hersituation.One of the studies indicates that it may be even more complicated to replace an oldemail system than introducing an email system for the first time in an organisation.The investment experienced users have made in the old system may be substantial.A model of time usage for organisation of email messages is also presented in orderto compare different strategies.Several design solutions are suggested with respect to folder usage, sorting emailmessages into folders, reducing the number of stored messages, and tailoring the emailsystem to the user’s work habits.
QC 20100524

The notion of a global knowledge society is somewhat of a misnomer due to the fact that large portions of the global community are not participants in this global knowledge society which is driven, shaped by and socio-technically biased towards a small fraction of the global population. Information and Communication Technology (ICT) is culture-sensitive and this is a dynamic that is largely ignored in the majority of ICT for Development (ICT4D) interventions, leading to the technological determinism flaw and ultimately a failure of the undertaken projects. The deployment of ICT solutions, in particular in the context of ICT4D, must be informed by the cultural and socio-technical profile of the deployment environments and solutions themselves must be developed with a focus towards context-sensitivity and ethnocentricity. In this thesis, we investigate the viability of a software architectural framework for the development of ICT solutions that are context-sensitive and ethnocentric1, and so aligned with the cultural and social dynamics within the environment of deployment. The conceptual framework, named PIASK, defines five tiers (presentation, interaction, access, social networking, and knowledge base) which allow for: behavioural completeness of the layer components; a modular and functionally decoupled architecture; and the flexibility to situate and contextualize the developed applications along the dimensions of the User Interface (UI), interaction modalities, usage metaphors, underlying Indigenous Knowledge (IK), and access protocols. We have developed a proof-of-concept service platform, called KnowNet, based on the PIASK architecture. KnowNet is built around the knowledge base layer, which consists of domain ontologies that encapsulate the knowledge in the platform, with an intrinsic flexibility to access secondary knowledge repositories. The domain ontologies constructed (as examples) are for the provisioning of eServices to support societal activities (e.g. commerce, health, agriculture, medicine) within a rural and marginalized area of Dwesa, in the Eastern Cape province of South Africa. The social networking layer allows for situating the platform within the local social systems. Heterogeneity of user profiles and multiplicity of end-user devices are handled through the access and the presentation components, and the service logic is implemented by the interaction components. This services platform validates the PIASK architecture for end-to-end provisioning of multi-modal, heterogeneous, ontology-based services. The development of KnowNet was informed on one hand by the latest trends within service architectures, semantic web technologies and social applications, and on the other hand by the context consideration based on the profile (IK systems dynamics, infrastructure, usability requirements) of the Dwesa community. The realization of the service platform is based on the JADE Multi-Agent System (MAS), and this shows the applicability and adequacy of MAS’s for service deployment in a rural context, at the same time providing key advantages such as platform fault-tolerance, robustness and flexibility. While the context of conceptualization of PIASK and the implementation of KnowNet is that of rurality and of ICT4D, the applicability of the architecture extends to other similarly heterogeneous and context-sensitive domains. KnowNet has been validated for functional and technical adequacy, and we have also undertaken an initial prevalidation for social context sensitivity. We observe that the five tier PIASK architecture provides an adequate framework for developing context-sensitive and ethnocentric software: by functionally separating and making explicit the social networking and access tier components, while still maintaining the traditional separation of presentation, business logic and data components.

Thesis (Ph. D.)--Case Western Reserve University, 2009.
Department of Information Systems, Weatherhead School of Management. Includes bibliographical references. Available online via OhioLINK's ETD Center.

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The present work investigates how the processes of production and diffusion of technical and scientific information occur among specialists in the assistance area aiming to contribute to the construction of knowledge in Oncology. The main interest is to know specialists information needs and uses and to understand how they cope with existing knowledge and means of communication available. In other words, how this effort is viewed in terms of information flow towards knowledge generation. In this attempt, the concept of information is linked to the institutional culture context to give a better understanding of how social practices among professional specialists in palliative care influence knowledge sharing. The study was developed in two stages. The first one was towards designing information behavior of INCA specialists. The second was intended to describe how information transfer happens among specialists of palliative care in their assistance practices. It is found high interrelation among specialists in relation to problems solving on routine activities in assistance practices. The specialists develop an efficient communication network to obtain and diffuse information aiming knowledge production to solve specific problems. It was also founded that there is a gap between informal and formal communication of technical and scientific information originated by assistance practices. This needs to be improved at institutional basis in order to increase knowledge production in Oncology
O presente trabalho investiga como os processos de produção e difusão da informação técnica e científica ocorrem entre os profissionais especialistas da área assistencial, em cuidados paliativos na construção do conhecimento em Oncologia. O principal interesse é conhecer necessidades e usos de informação dos especialistas e entender como isto se relaciona com o conhecimento e com os meios de comunicação disponíveis, isto é, como este compartilhamento é visto em termos da transferência de informação visando à geração do conhecimento. O conceito de informação foi relacionado ao contexto da cultura institucional para permitir um melhor entendimento de como as práticas sociais entre os profissionais em cuidados paliativos influenciam na troca de informação e conhecimento. O estudo foi desenvolvido em duas etapas: a primeira consistiu no delineamento do comportamento informacional dos especialistas do INCA e a segunda descreveu como é feita a transferência de informação. Os resultados mostraram uma interação significativa entre eles quanto à solução de problemas nas atividades rotineiras de suas práticas assistenciais. Os especialistas desenvolveram uma eficiente rede de comunicação para obter e difundir informação visando à produção do conhecimento na solução de problemas específicos. Os resultados também mostraram que existe um hiato entre a comunicação informal e formal da informação técnica e científica originária das práticas assistenciais. Este hiato necessita ser melhor entendido em bases institucionais visando a produção de conhecimento em Oncologia

Information complexity enables the use of information-theoretic tools in communication complexity theory. Prior to the results presented in this thesis, information complexity was mainly used for proving lower bounds and direct-sum theorems in the setting of communication complexity. We present three results that demonstrate new connections between information complexity and communication complexity.

In the first contribution we thoroughly study the information complexity of the smallest nontrivial two-party function: the AND function. While computing the communication complexity of AND is trivial, computing its exact information complexity presents a major technical challenge. In overcoming this challenge, we reveal that information complexity gives rise to rich geometrical structures. Our analysis of information complexity relies on new analytic techniques and new characterizations of communication protocols. We also uncover a connection of information complexity to the theory of elliptic partial differential equations. Once we compute the exact information complexity of AND, we can compute exact communication complexity of several related functions on n-bit inputs with some additional technical work. Previous combinatorial and algebraic techniques could only prove bounds of the form Θ( n). Interestingly, this level of precision is typical in the area of information theory, so our result demonstrates that this meta-property of precise bounds carries over to information complexity and in certain cases even to communication complexity. Our result does not only strengthen the lower bound on communication complexity of disjointness by making it more exact, but it also shows that information complexity provides the exact upper bound on communication complexity. In fact, this result is more general and applies to a whole class of communication problems.

In the second contribution, we use self-reduction methods to prove strong lower bounds on the information complexity of two of the most studied functions in the communication complexity literature: Gap Hamming Distance (GHD) and Inner Product mod 2 (IP). In our first result we affirm the conjecture that the information complexity of GHD is linear even under the uniform distribution. This strengthens the Ω(n) bound shown by Kerenidis et al. (2012) and answers an open problem by Chakrabarti et al. (2012). We also prove that the information complexity of IP is arbitrarily close to the trivial upper bound n as the permitted error tends to zero, again strengthening the Ω(n) lower bound proved by Braverman and Weinstein (2011). More importantly, our proofs demonstrate that self-reducibility makes the connection between information complexity and communication complexity lower bounds a two-way connection. Whereas numerous results in the past used information complexity techniques to derive new communication complexity lower bounds, we explore a generic way, in which communication complexity lower bounds imply information complexity lower bounds in a black-box manner.

In the third contribution we consider the roles that private and public randomness play in the definition of information complexity. In communication complexity, private randomness can be trivially simulated by public randomness. Moreover, the communication cost of simulating public randomness with private randomness is well understood due to Newman's theorem (1991). In information complexity, the roles of public and private randomness are reversed: public randomness can be trivially simulated by private randomness. However, the information cost of simulating private randomness with public randomness is not understood. We show that protocols that use only public randomness admit a rather strong compression. In particular, efficient simulation of private randomness by public randomness would imply a version of a direct sum theorem in the setting of communication complexity. This establishes a yet another connection between the two areas. (Abstract shortened by UMI.)

This study analyzes how spatial organization impacts science communication at the St. Petersburg Science Festival in Florida. Through map analysis, qualitative interviews, and a close reading of evaluation reports, the author determines that sponsorship, logistics, exhibitor ambience, and map usability and design are the factors most affecting the spatial performance of science. To mitigate their effects, technical communicators can identify these factors and provide the necessary revisions when considering how science is communicated to the public.

The purpose of the project was to develop a single-semester curriculum for Citrus College. The curriculum was directed at adults returning from the workplace to update their skills, and college students that are enrolled in the information technology (IT), or computer science (CS) tracks.

Cette thèse s’intéresse aux données de la recherche, dans un contexte d’incitation croissante à leur ouverture. Les données de la recherche sont des informations collectées par les scientifiques dans la perspective d’être utilisées comme preuves d’une théorie scientifique. Il s’agit d’une notion complexe à définir, car contextuelle. Depuis les années 2000, le libre accès aux données occupe une place de plus en plus stratégique dans les politiques de recherche. Ces enjeux ont été relayés par des professions intermédiaires, qui ont développé des services dédiés, destinés à accompagner les chercheurs dans l’application des recommandations de gestion et d’ouverture. La thèse interroge le lien entre idéologie de l’ouverture et pratiques de recherche. Quelles formes de gestion et de partage des données existent dans les communautés de recherche et par quoi sont-elles motivées ? Quelle place les chercheurs accordent-ils à l’offre de services issue des politiques de gestion et d’ouverture des données ? Pour tenter d’y répondre, 57 entretiens ont été réalisés avec des chercheurs de l’Université de Strasbourg dans différentes disciplines. L’enquête révèle une très grande variété de pratiques de gestion et de partage de données. Un des points mis en évidence est que, dans la logique scientifique, le partage des données répond un besoin. Il fait partie intégrante de la stratégie du chercheur, dont l’objectif est avant tout de préserver ses intérêts professionnels. Les données s’inscrivent donc dans un cycle de crédibilité, qui leur confère à la fois une valeur d’usage (pour la production de nouvelles publications) et une valeur d’échange (en tant que monnaie d’échange dans le cadre de collaborations avec des partenaires). L’enquête montre également que les services développés dans un contexte d’ouverture des données correspondent pour une faible partie à ceux qu’utilisent les chercheurs. L’une des hypothèses émises est que l’offre de services arrive trop tôt pour rencontrer les besoins des chercheurs. L’évaluation et la reconnaissance des activités scientifiques étant principalement fondées sur la publication d’articles et d’ouvrages, la gestion et l’ouverture des données ne sont pas considérées comme prioritaires par les chercheurs. La seconde hypothèse avancée est que les services d’ouverture des données sont proposés par des acteurs relativement éloignés des communautés de recherche. Les chercheurs sont davantage influencés par des réseaux spécifiques à leurs champs de recherche (revues, infrastructures…). Ces résultats invitent finalement à reconsidérer la question de la médiation dans l’ouverture des données scientifiques
The thesis investigates research data, as there is a growing demand for opening them. Research data are information that is collected by scientists in order to be used as evidence for theories. It is a complex, contextual notion. Since the 2000s, open access to scientific data has become a strategic axis of research policies. These policies has been relayed by third actors, who developed services dedicated to support researchers with data management and sharing.The thesis questions the relationship between the ideology of openness and the research practices. Which kinds of data management and sharing practices already exist in research communities? What drives them? Do scientists rely on research data services? Fifty-seven interviews were conducted with researchers from the University of Strasbourg in many disciplines. The survey identifies a myriad of different data management and sharing practices. It appears that data sharing is embedded in the researcher’s strategy: his main goal is to protect his professional interests. Thus, research data are part of a credibility cycle, in which they get both use value (for new publications) and exchange value (as they are traded for other valuable resources). The survey also shows that researchers rarely use the services developed in a context of openness. Two explanations can be put forward. (1) The service offer comes too early to reach researchers’ needs. Currently, data management and sharing are not within researchers’ priorities. The priority is publishing, which is defined as source of reward and recognition of the scientific activities. (2) Data management services are offered by actors outside the research communities. But scientists seem to be more influenced by internal networks, close to their research topics (like journals, infrastructures…). These results prompt us to reconsider the mediation between scientific communities and open research data policies

Despite more than a decade-long process to transition aircraft maintenance practices from paper-to electronic-based systems, some organizations remain unable to complete this transition. Researchers have indicated that while organizations have invested resources in technology improvements, there remains a limited understanding of the factors that contribute to effectively managing technology-enabled change. The purpose of this case study was to identify and explore socio-technical (ST) factors that inhibit an effective transition from a paper-based system to an electronic-based system for aircraft maintenance. A conceptual model applying theories of change management, technology acceptance, systems thinking, and ST theory informed the research. Thirteen participants provided data via semistructured interviews, field observations, follow-up interviews, other documentation, and a questionnaire. Data were analyzed with open and axial coding techniques to identify themes, which were then crosschecked and triangulated with observation and follow-up interview data. Findings revealed communication issues, a fundamental misconception in training, and a false assumption that all personnel easily acquire computer literacy. Benefits gained from this study should assist maintenance, repair, and overall (MRO) organizations within the Department of Defense to improve current and future technology implementation as the research underscores real-life issues from a comparable organization. The implications for positive social change provide a greater understanding of technology-enabled change and contribute to the development of best practices for technology initiatives that address common ST issues in the MRO workplace.

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.
Includes bibliographical references (leaves 89-93).
This thesis focuses on the problem of extracting information from informal communication. Textual informal communication, such as e-mail, bulletin boards and blogs, has become a vast information resource. However, such information is poorly organized and difficult for a computer to understand due to lack of editing and structure. Thus, techniques which work well for formal text, such as newspaper articles, may be considered insufficient on informal text. One focus of ours is to attempt to advance the state-of-the-art for sub-problems of the information extraction task. We make contributions to the problems of named entity extraction, co-reference resolution and context tracking. We channel our efforts toward methods which are particularly applicable to informal communication. We also consider a type of information which is somewhat unique to informal communication: preferences and opinions. Individuals often expression their opinions on products and services in such communication. Others' may read these "reviews" to try to predict their own experiences. However, humans do a poor job of aggregating and generalizing large sets of data. We develop techniques that can perform the job of predicting unobserved opinions.
(cont.) We address both the single-user case where information about the items is known, and the multi-user case where we can generalize opinions without external information. Experiments on large-scale rating data sets validate our approach.
by Jason D.M. Rennie.
Ph.D.

ICT for Library and Information Professionals: A Training Package for Developing Countries (ICTLIP) edited by Andrew Large, McGill University, Canada, and published by UNESCO, Bangkok, Thailand consists of 6 modules, namely, Module 1: Introduction to information and communication technologies; Module 2: Introduction to integrated library systems; Module 3: Information seeking in an electronic environment; Module 4: Database design, and information storage and retrieval; Module 5: The Internet as an information resource; and Module 6: Web page concept and design: getting a web site up and running. This is Module 1 (Teacher's Guide) by Lourdes T. David. Module 1 covers the basic concepts of information and communication technologies, the impact of ICT on society and the reasons why librarians need to acquire ICT knowledge and skills. By the end of the course, students should be able to: 1. Describe how computers process information 2. Use a personal computer system for various tasks in libraries 3. Define how networks (LAN, WAN, intranet, Internet) operate 4. Recognize the significance of computers and networks in the creation, collection, consolidation and communication of information 5. Be aware of trends and ethical, legal and technological issues concerning the use of ICT in libraries and information centers

Unauthorized data removal and modification from information systems represents a major and formidable threat in modern computing. Security researchers are engaged in a constant and escalating battle with the writers of malware and other methods of network intrusion to detect and mitigate this threat. Advanced malware behaviors include encryption of communications between the server and infected client machines as well as various strategies for resilience and obfuscation of infrastructure. These techniques evolve to use any and all available mechanisms. As the Internet has grown, DNS has been expanded and has been given security updates. This study analyzed the potential uses of DNSSEC as a covert channel by malware writers and operators. The study found that changing information regarding the Start of Authority (SOA) and resigning the zone can create a covert channel. The study provided a proof of concept for this previously undocumented covert channel that uses DNSSEC.

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.
Includes bibliographical references (p. 231-239).
Research in the past decade has established capacity theorems for point-to-point bosonic channels with additive thermal noise, under the presumption of a conjecture on the minimum output von Neumann entropy. In the first part of this thesis, we evaluate the optimum capacity for free-space line-of-sight optical communication using Gaussian-attenuation apertures. Optimal power allocation across all the spatiotemporal modes is studied, in both the far-field and near-field propagation regimes. We establish the gap between ultimate capacity and data rates achievable using classical encoding states and structured receivers. The remainder of the thesis addresses the ultimate capacity of bosonic broadcast channels, i.e., when one transmitter is used to send information to more than one receiver. We show that when coherent-state encoding is employed in conjunction with coherent detection, the bosonic broadcast channel is equivalent to the classical degraded Gaussian broadcast channel whose capacity region is known. We draw upon recent work on the capacity region of the two-user degraded quantum broadcast channel to establish the ultimate capacity region for the bosonic broadcast channel, under the presumption of another conjecture on the minimum output entropy. We also generalize the degraded broadcast channel capacity theorem to more than two receivers, and prove that if the above conjecture is true, then the rate region achievable using a coherent-state encoding with optimal joint-detection measurement at the receivers would be the ultimate capacity region of the bosonic broadcast channel with loss and additive thermal noise. We show that the minimum output entropy conjectures restated for Wehrl entropy, are immediate consequences of the entropy power inequality (EPI).
(cont.) We then show that an EPI-like inequality for von Neumann entropy would imply all the minimum output entropy conjectures needed for our channel capacity results. We call this new conjectured result the Entropy Photon-Number Inequality (EPnI).
by Saikat Guha.
Ph.D.

Trust plays a crucial role in online commerce, collaboration and interactions in general. Reputation systems have emerged in recent years as a technology and tools for fostering trust in online interactions. These community tools help people make decisions on whom they can trust, encourage trustworthy behavior, and preclude dishonest and unskilled participants. Despite their successful use, today's reputation systems face many problems, one of which is the lack of portability. Since every existing reputation system is bound to a specific website, a user's reputation is locked in one community only, making the user unable to use that reputation outside the community. Portable reputation systems will solve this problem by making a user's reputation information accessible to any online entities s/he wishes to interact with. This thesis introduces the concepts of trust, online trust and reputation, introduces reputation systems, analyzes the importance of trust and reputation systems in online interactions, conducts a study on portability of online reputation, and proposes a model for reputation system which supports the feature of portability.

ICT has furthered the social and economic development of societies but, rural African communities have lagged behind due to issues such as sparse population, low household income, a lack of electricity and other basic infrastructure that make it unattractive for telecommunication service providers to extend service provision. Where the service is available, ubiquitous service coverage has not translated into ubiquitous access for individuals because of the associated costs. A community-wide WMN offering VoIP using fixed telephone handsets has been deployed as a viable alternative to the cellular service provider. The effectiveness of this WMN VoIP service springs from the mobile phone usage statistics which showed that the majority of calls made are intra-community. This dissertation has been an effort towards improved communication and access to information for the under-served communities. Key contributions include, mobile VoIP support, translation gateway deployment to make textual information accessible in voice form via the phone, IP-based radio for community information dissemination. The lack of electricity has been mitigated by the use of low-power devices. In order to circumvent the computational challenges posed by the processing and storage limitations of these devices, a decentralised system architecture whereby the processing and storage load are distributed across the mesh nodes has been proposed. High-performance equipment can be stationed at the closest possible place with electricity in the area and connectivity extended to the non-electrified areas using low-power mesh networking devices. Implementation techniques were investigated and performance parameters measured. The quality of service experienced by the user was assessed using objective methods and QoS correlation models. A MOS value of 4.29, i.e. very good, was achieved for the mobile VoIP call quality, with the underlying hardware supporting up to 15 point-to-point simultaneous calls using SIP and the G.711 based codec. Using the PEAQ algorithm to evaluate the IP-based radio, a PEAQ value of 4.15, i.e. good, was achieved. Streaming audio across the network reduces the available bandwidth by 8Kbps per client due to the unicast nature of streaming. Therefore, a multicast approach has been proposed for efficient bandwidth utilization. The quality of the text-to-voice service rendered by the translation gateway had a PESQ score of 1.6 i.e. poor. The poor performance can be attributed to the TTS engine implementation and also to the lack of robustness in the time-alignment module of the PESQ algorithm. The dissertation also proposes the use of the WMN infrastructure as a back-haul to isles of WSNs deployed in areas of interest to provide access to information about environmental variables useful in decision making.

Two questions drove this case study. 1) To what extent does playing the online computer game Minecraft at home in a multiplayer environment impact a player's media literacy skills of analysis, evaluation, and access? 2) To what extent does playing the online computer game Minecraft at home in a multiplayer environment impact a player's 21^st century skills of critical thinking, creativity, communication, and collaboration? The study employed quantitative and qualitative research methods (pre and posttest, survey, and interview) using a case study design, enabling an opportunity for in-depth data gathering in a naturalistic environment.

Using pre and posttest, the researcher assessed whether participants' 21^st century skills changed over the course of a 24 week period. Participants’ media literacy skills were assessed at the beginning and end of the study, using a pretest/posttest method adapted for use with younger children from the Arke and Primack Media Literacy Measure (2009). In addition, media literacy skills and the Four Cs skills were assessed using a combination of survey, reflective questioning, and interview methods. Analysis of the data shows that participants' media literacy skills did improve at the end of six months of gameplay, and playing Minecraft multiplayer did provide opportunities for participants to practice 21^st century skills.