Thesis (Ph. D.) University of Missouri-Columbia, 2006. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on month August 3, 2007) Includes bibliographical references.

Thomas W. Malone. / "September 1985." "In J. Carroll (ed.), Interfacing thought : cognitive aspects of human computer interactions, ... l986." / Includes bibliographical references (p. 26-30).

Jeanne W. Ross, Cynthia Mathis Beath, Dale L. Goodhue. / "February 1994." / Includes bibliographical references (p. 21-23).

Thesis (MPhil (Information Science))--University of Stellenbosch, 2006. / ENGLISH ABSTRACT: Rural communities depend on the use of natural resources surrounding them for their daily livelihoods. These communities have in the past lived off these resources amid the day-to-day natural threats that pose a threat to their environmental resources. These communities depend on tending the land and rearing livestock to provide for their day-to-day needs. The only period when these communities decide to sell what they have produced is when they have unexpected surpluses that were neither planned for and these are normally sold to derive extra income. Given the total dependence on the use of their natural resources as a means of their survival one would expect this group to be provided with relevant information and be kept abreast of developments in the sector to enable them to produce better and derive surpluses that will generate extra income. This is unfortunately not the prevailing arrangement, very often these communities are left on their own to fend for themselves using knowledge and practical experience that has been gained over the years. In other instances the nature of the information provided is in most cases such that it does not lend itself for easy use by a person who is either semi-literate or illiterate. For those who can read the information it is not always forthcoming or does not deal with the relevant local issues, and lack of supportive infrastructure also adds to the farmers ailing conditions. The kind of agricultural research as well as extension services provided to these farming communities is still lagging behind due to a number of factors, these include: poor interaction with the farmers in an effort to identify and prioritize their needs, high level of illiteracy, insufficient resources, low levels of income and a host of other related problems. Adomi et.al. (2003), in their study on crop farmers’ access to agricultural information in rural areas of Delta State Nigeria, also stress the importance of farmers having access to agricultural information if their agricultural efforts are to succeed. They further emphasize that farmers need to share knowledge and experience with farmers who operate under similar conditions, this will enable them to adapt and replicate experiences learnt from other farmers. Most importantly farmers need to be provided with information on access to credit and information from research institutions. The paper intends to look at challenges facing small-scale farmers in as far as information dissemination is concerned, appropriate techniques that can be applied to overcome these challenges and use lessons that have proved to work for countries operating under similar conditions. It is important to remember that farmers irrespective of their scale of operation, are managers in their own right, they are constantly facing challenges, are forced to make choices and decisions that will determine the future of their farming enterprise in the cut-throat competitive environment. The livelihoods of their families depend on these very decisions. Therefore providing timely, accurate, reliable and user-friendly information at affordable prices is their only hope for survival in the present free- market economy.

Thesis (MPhil)--Stellenbosch University, 2013. / ENGLISH ABSTRACT: The volume of information available to the individual today is greater than ever before. From sources that range from verbal to non-verbal, paper to electronic and audio to visual, there is a constant and ubiquitous supply of information. For managers in an organisational context, whose job it is to manage information from various sources and make decisions based on that, this proliferation of information can be overwhelming. As a result, decision-makers can experience information overload, which can have various detrimental effects on them. Both the problems that information overload can cause, as well as some suggested solutions to the effect are explored. A brief investigation follows into the way in which information in different forms is cognitively processed by individuals is explored. Two possible ways in which decision-makers can respond to the problem of information overload are examined. The first focuses on the visualisation of information and visual management in organisations, looking at two examples, the balanced scorecard and the oobeya room. The visualisation of information often integrates information from various sources, reducing its volume to facilitate cognitive processing. The second response to information overload looks at the use of fast and frugal heuristics. These heuristics ignore some of the available information to ease cognitive processing, resulting in faster decisions that use as little information as possible. Both of these two approaches are explored as potential decision support systems for decision-makers in an organisational context, separately and in combination. One approach is structured and planned, while the other is largely unplanned and intuitive. The similarities are investigated in the way that these two approaches structure information. Both methods aim to reduce the amount of cognitive processing for the decision-maker, minimising the chances of information overload occurring and can be used under certain appropriate conditions to minimise the negative effects of information overload on decision-makers in organisations to result in more effective decision-making processes. / AFRIKAANSE OPSOMMING: Die volume inligting wat beskikbaar is tot die individu vandag is groter as ooit tevore. Vanaf bronne wat wissel van verbale tot nie-verbale, papier na elektroniese- en klank tot visuele bronne, is daar 'n konstante en alomteenwoordige verskaffing van inligting. Vir bestuurders in 'n organisasiekonteks, wie se werk dit is om inligting uit verskillende bronne te bestuur en besluite op die hierdie verspreiding van inligting te basseer, kan dit oorweldigend wees. As gevolg hiervan kan besluitnemers ’n inligting-oorlading ervaar, wat verskeie nadelige effekte op hulle kan hê. Beide die probleme wat inligting-oorlading kan veroorsaak, asook 'n paar voorgestelde oplossings met betrekking tot die effek, word ondersoek. 'n Kort ondersoek kyk na die manier waarop die inligting in verskillende vorme kognitief deur die individue verwerk word. Twee moontlike maniere waarop besluitnemers kan reageer op die probleem van inligting-oorlading, word ondersoek. Die eerste fokus op die visualisering van inligting en visuele bestuur in organisasies, deur te kyk na twee voorbeelde: die gebalanseerde telkaart en die oobeya kamer. Die visualisering van inligting behels dikwels die integrasie van inligting uit verskeie bronne en so word die volume saamgevat om kognitiewe prosessering te fasiliteer. Die tweede reaksie op inligting-oorlading kyk na die gebruik van "snelle en spaarsame" heuristiese metodes. Hierdie heuristiese metodes ignoreer sommige van die beskikbare inligting wat kognitiewe prosessering verlig, wat individue in staat stel om vinniger besluite te neem en so min as moontlik inligting gebruik. Beide van hierdie twee benaderings word ondersoek as moontlike ondersteuningstelsels vir besluitnemings deur besluitnemers in 'n organisasiekonteks, beide afsonderlik en as ’n kombinasie. Die een benadering is gestruktureerd en beplan, terwyl die ander grootliks onbeplan en intuïtief is. Die ooreenkomste in die manier waarop hierdie twee benaderings inligting struktureer, word ondersoek. Beide metodes poog om die kognitiewe verwerkingslading vir die besluitnemer te verminder en so die kanse vir inligting-oorlading te verlaag. So kan dit gebruik word om onder gepaste toestande die negatiewe effekte van inligting-oorlading te verminder, sodat besluitnemers in organisasies meer effektiewe besluitnemingsprosesse kan implimenteer.

Orientador: Odivaldo José Seraphim / Coorientador: Alexandre Alves de Lima Ribeiro / Banca: Odivaldo José Seraphim / Banca: Renato Correia de Barros / Banca: Radames Juliano Halmeman / Banca: Alexandre Dal Pai / Banca: Frederico Guilherme de Paula F.Ielo / Resumo: Rede de computadores são elementos fundamentais no processo de comunicação. Esses componentes exigem o acompanhamento constante de suas tarefas e são administrados por sistemas de informações que coletam os dados diariamente, para orientar os analistas de suporte na correção das falhas na infraestrutura e a ferramenta utilizada na gestão de recursos de rede de computadores é o protocolo SNMP. As infraestruturas de geração de energia elétrica também são elementos complexos e necessitam de acompanhamento. São utilizados sistemas de informação que disponibilizam dados para os usuários e responsáveis técnicos para avaliarem o funcionamento e corrigir as possíveis falhas. As redes de computadores e os sistemas de geração distribuídas estão convergindo para o ambiente do usuário, e as ferramentas de gestão são importantes são mecanismos na gestão da produção e consumo de energia elétrica. Assim, este trabalho tem como objetivo desenvolver um sistema de monitoramento on line para sistema de microgeração fotovoltaica utilizando o protocolo de rede de computadores Single Network Management Protocol (SNMP) para realizar a interface de comunicação com as variáveis de medições elétricas e meteorológicas. O desenvolvimento do projeto compõe dois componentes: hardware e software. O software é composto de dois módulos um para ser utilizado na Web, aplicações Desktop para uso em computadores que suportem sistemas operacionais como o Windows, Linux ou Mac e em dispositivos móveis. As funciona... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Computer networks are fundamental elements in the communication process. Such components demand constant supervision of their tasks and are managed by information systems, which daily collect data to guide support analysts when correcting glitches in the infrastructure. Protocol SNMP is the tool used for managing resources of the computer network. The infrastructures of electric energy generation are also complex elements and require monitoring. Information systems are utilized, which provide data to users and technical professionals, so they can evaluate functioning and correct possible errors. Computer networks and systems of distributed generation are converging towards the user's environment, so, management tools are important mechanisms in the control of production and consumption of electric energy. Thus, this work aims at developing an online monitoring system for photovoltaic microgeneration using the Single Network Management Protocol (SNMP) to perform the communication interface with the variables of electrical and metereological measurements. The project development is composed of two elements: hardware and software. The software consists of two modules: one to be used on the Web, Desktop apps for use in computers that can carry operational systems such as Windows, Linux or Mac and one to be used in mobile devices. Programmed functionalities include information register for the functioning of the system; reports and graphs that show information ordained in several ... (Complete abstract click electronic access below) / Doutor

Unrestricted accessible scholarly resources are increasingly considered essential to knowledge creation and socio-economic development. In order to facilitate this, university libraries at National Research Universities (NRUs) in Thailand have established institutional repositories (IRs). The development of the Open Access publishing movement also provides opportunities and challenges to NRUs’ IRs and scholarly community. Like others, the IR projects in Thailand have experienced low awareness and content contribution from stakeholders. Accordingly, this study aims to optimize the established IR projects in NRUs in Thailand by exploring the stakeholders’ research publishing behaviour, and the perception, participation, and utilisation of IRs. This study advances the understanding of IRs in NRUs in Thailand from the perspectives of multiple stakeholder groups. This inductive qualitative study employs Constructivist Grounded Theory as a research methodology. Theoretical sampling, convenient sampling, and purposive sampling were used to recruit key participants in Thai scholarly communication at three NRUs. An in-depth semi-structured interview method was used to collect data and Charmaz’s Grounded Theory Method of Open coding and Focused coding was used to analyse it. The analysis resulted in the generation of the 4Cs (/foresee/) Model for the Development of University-based IRs. It composes of “Communication” “Collaboration”, “Copyright understanding”, “Control” and “Local academic culture”. This innovative model provides an explanatory framework identifying the factors for the availability and accessibility of full-text digital research publications in Thai university-based IRs. Moreover, the 3Rs – Rethinking, Redefining, and Re-collaborating- are recommended as key activities to be considered when confronting the difficulties in the development of IRs. In addition, this study also proposes the “2PSC model for operational excellence – Policies, Procedure, Services, and Competencies” as a practical and effective mechanism for managing IRs. Further, the study offers theoretical, methodological, and empirical contributions to the understanding of IRs in NRUs in Thailand from the perspectives of multiple stakeholder groups.

Environmental scanning is an essential activity for organisation's success undertaken by top executives to allow them to be effective in steering the organisation within a changing environment. Organisations exist in an increasingly turbulent world. Organisations which want to succeed in the ever-changing business environment need to adopt suitable management tools that can identify emerging issues that may have the capacity to impact on their business. Environmental scanning is such a technique, often used within a suite of tools as part of a strategic planning process; it can be an important source of information for firms which operate in rapidly changing environments. The aim of this study is to investigate environmental scanning activities in the Saudi private sector. In recent years, changes in the domestic and global environment have created very different economic challenges. A number of factors have promoted these changes; political uncertainty, economic decline, youth explosion, the rapid increase in unemployment among Saudi youth and Islamic extremism highlight some of the challenges that the country now faces which ultimately might impact on Saudi business. Most of the previous research on environmental scanning has been carried out in a Western context, and no empirical research exists on the scanning activities of Arab executives in general and Saudis in particular. This research aimed to address this gap in the literature by investigating environmental scanning activities in Saudi private firms. In particular the study looks at (1) executives' perception of their business environment: (2) the frequency of, and level of interest in, executives' scanning: (3) the information sources used to investigate what is happening in the business environment: (4) the decisions which dependent on scanning activities: (5) the methods used by Saudi firms to scan their environment. The research adopted a triangulation methodology using both a mail survey questionnaire and personal interview. A total of 500 surveys were sent to executives of the Saudi top 500 firms; 162 were returned. However, only 150 usable questionnaires were included for data analysis. The study revealed that Saudi executives in general believe that their businesses operate in a highly turbulent environment where competition, economic and legal factors are perceived as the most strategically uncertain. Surprisingly, political factors produced a low level of perceived strategic uncertainty. The study pointed out that the executives in this sample tend to scan for a large number of issues in their environment. In particular, they conduct the greatest amount of scanning in the competition, economic and legal areas. In addition, the study indicated that the executives in the sample increase scanning frequency in response to increased perception of environmental uncertainty in the macro-environment more than in the micro-environment. The findings from this study also show that personal sources are used more frequently than impersonal sources in scanning by executives in this study. Among the five most used sources for scanning, four are personal sources (customers: subordinate managers: subordinate staff: business/ professional associates).

The focus of my research is Soviet documentary filmmaker, Elizaveta Svilova (1900-75), most commonly remembered, if at all, as the wife and collaborator of acclaimed Soviet film pioneer, Dziga Vertov (1896-1954). Having worked with her husband for many years, Svilova continued her career as an independent director-editor after Vertov fell out of favour with the Central Committee. Employed at the Central Studio for Documentary Film, a state-initiated studio, Svilova’s films were vehicles of rhetoric, mobilised to inform, educate and persuade the masses. She draws on visual symbols familiar to audiences and organises them according to the semiotic theories – namely techniques of dialecticism and linkage – attributed to the Soviet montage school of the 1920s. On-screen credits indicate that, during the period 1939 to 1956, Svilova was the director-editor of over 100 documentaries and newsreel episodes, yet this corpus of films has received very little critical attention. As my thesis aims to demonstrate, the reasons for the lack of attention to Svilova’s films are partly due to her husband’s eminent status – the rules whereby we construct film history have resulted in Svilova’s contribution being absorbed into Vertov’s – and this is related to the long-standing tendency within film criticism to marginalise the female artist. My thesis also touches on issues regarding curatorial and archival policies, and provides an opportunity to rethink early film history and the modes through which historiographic and filmographic knowledge are transmitted.

The Semantic Web (SW) represents the next wave in the evolution of the World Wide Web (WWW). It is a web of interlinked documents containing information that can be processed, understood and reasoned over by machines. The machine is the primary user in this Web. The aim of the Semantic Web is to turn the WWW from what can be described today as a gigantic web of pages, to a global database that will permit a more fine-grained access to the information that resides on the Web. Queries initiated by humans or machines retrieve the information of interest. In this thesis the application of concepts of the Semantic Web is being investigated in the context of product unit cost modelling in Rolls-Royce plc. Parametric cost modelling is one of the approaches used to cost estimation. Parametric models rely on statistical techniques that analyse usually historical data to produce regression equations. During this process numerous assumptions become embedded in the models. Understanding the underlying data and assumptions enables judgements to be made about the suitability and applicability of a given cost model to the task at hand and leads to an understanding of the model in question. Passing knowledge intensive artefacts such as cost models over organisational boundaries requires a shared understanding between providers and consumers, of what the model represents and under which circumstances it can be used. A shared understanding is reached when ambiguity regarding possible alternative interpretations is eliminated. Currently this is achieved by providing cost model documentation to the end users. It is hypothesised that the use of explicit vocabularies a.k.a. ontologies to describe the data used in cost models will enable the effective dissemination of costing knowledge within Rolls-Royce plc, from organisations that possess such expertise to the engineering functions that consume it. A corporate semantic web drawing on its inference capabilities can remove some of the documentation overhead expended by the costing organisations in support of the tasks of producing, validating, disseminating, auditing and maintaining these parametric cost models. Such a semantic web can provide designers with cost models in a manner that reflects the change in availability of design information as the design definition evolves from abstract to concrete. Information resources from the corporate intranet can be integrated with costing data to provide contextual information in support of the statistical analysis and validation stages.