Information System development involves various activities; the process of developing information systems is considered to be the production of a series of documents. The information derived from the activities of the life cycle needs to be stored in a way that will facilitate the carrying out of subsequent activities. That is, information must be stored with a consistent, semantically rich, flexible, and efficient structure that will make it accessible for use by various tools employed in carrying out the development process. In this research, knowledge base management system (KBMS) to manage the information created by the information system development process was designed and implemented. Several contemporary popular knowledge representation schemes can be managed conveniently by this KBMS, which utilized efficient database techniques to facilitate fast retrieval and traversal of the underlying semantic inheritance net and frame knowledge structure. Inference and logic deduction capability was made a part of the static knowledge structure to further extend the functionality of the KBMS. Furthermore, a specially designed relational database management system was implemented and interfaced with the KBMS to alleviate the possibility of a storage saturation problem and to facilitate the storage of detailed exclusive information of terms defined in the knowledge base. Models that are applicable to various information system development activities were identified and stored in the knowledge base. The aggregation of those models is, in fact, a conceptual non-procedural language that provides a concise descriptive framework to help the user gather and manage information derived from various activities during the information system development process. The knowledge base, the language, and several knowledge-base related tools were used by more than seventy graduate students in a case study for a system analysis and design course. An information system methodology specifically tailored for this knowledge base supported environment was proposed and applied in a simplified case to illustrate the process of how a database-centered information system can be derived from the initial strategic planning phase. The methodology explored and made use of the storage structure of the closely coupled knowledge base and database. Finally, future research direction was identified.

<p> Traditional engineering and financial assessments are limited not only to consideration of currently internalized costs, but also often lack consideration of new or current externalities during the life of the new system. The goal of this thesis is to provide a methodology that integrates sustainability assessment with the traditional assessments, thereby allowing the assessment and optimization of the total overall costs. The proposed method is applied for the steam methane reforming (SMR) plants operated by Air Products in Edmonton, Canada where the boiler feed water for hydrogen manufacturing is produced using the polished effluent from the local municipal wastewater treatment plant. The softening of the feed water to Reverse Osmosis (RO) system is proposed (after evaluating the several options) to improve the recovery for the current RO system from 75% to 95%. The overall costs were estimated for comparison of the current and proposed systems.</p><p> The production of hydrogen via SMR highlights the complexities of the sustainability assessment. While hydrogen may be considered a renewable transportation fuel, depending on whether the fossil natural gas can be replaced with renewable biogas or via electrolysis of water using renewable energy, it is reliant on the availability of water. However, water is a scarce resource that is also essential for basic human survival and ecological needs. As the population of the world increases, alternative water sources need to be explored, which may require more energy in the processing of such water to potable grade. </p><p> The results show that the proposed RO feed softening via Ion Exchange (IX) can improve RO recovery up to 95%. The financial assessments based on literature prices and cost factors show that the current operating cost can be reduced up to ~20% by improving RO recovery to 95% with ~75% probability for cost reduction at 95% recovery. When the capital costs are accounted for, NPV-based analyses show that for 95% recovery more than 20% IRR (if spare vessels are available for refurbishment) could be achieved.</p><p> Environmental assessments (Life Cycle Assessment method using SimaPro v7.3 following ISO 14040-44 standards) show that 1.12 x 10^-3 ReCiPe Endpoints impact for current RO operation at 75% recovery can be reduced by ~8% when 95% RO recovery is achieved via the proposed system. Due to the need for increased NaCl salt for regeneration of resins in the proposed system, the environmental impacts increased for metal depletion and ionizing radiation impact categories, unlike the other impact categories. The GHG emissions could be reduced by ~10% (after accounting for 10%-30% probability) for 95% RO recovery with the reduction from the reduced consumption of inputs. Similarly, the life cycle water depletion impacts can be reduced by ~10% (after accounting for 30%-65% reduction probability) from the current 1.75kg water depletion per kg of BFW produced. Water Footprint Assessment (WFA) as per the Ridoutt &amp; Pfister method shows that when accounted for local water stress, during the worst month, the blue water footprint increases from 1.75kg/kg BFW to 63.9kg/kg BFW, in addition to ~0.08kg/kg BFW greywater footprint.</p><p> The social assessment shows mixed results with lower employment, employee development, corporate philanthropy, environmental "protect" spend and R&amp;D spend due to reduced overall consumptions for the 95% recovery option. The other social impact categories were improved for 95% recovery. The overall cost (estimated as the sum of the internally normalized social costs) were 3.0 units with up to 35% reduction potential.</p><p> The results of the case study show that IX feed softening has potential to not only reduce the environmental and social costs, but also meet the financial constraints. Also, this highlights that an integrated sustainability assessment method that evaluates and combines all three aspects of sustainability - environment, social and economic - could be developed. The proposed method as presented needs further development. Among other things, the lack of availability of robust social inventory database significantly hinders the development and adoption such integrated methods. The application of the method to additional case studies would be a good next step.</p><p> This exercise has highlighted that the value and benefits of overall cost estimates are beyond those of policy making by the regulatory agencies. Sustainability minded companies could benefit from having environmental and social goals along with the financial targets as they understand the risks from inadequate performances in any of these aspects. However, these goals are typically on a gate-to-gate basis and independent of each other; thereby, creating the potential for shifting burdens in the value chain and not obtaining the full benefits of risk mitigation. The assessment using the overall cost approach at life cycle basis is essential for industry in not only risk mitigation, but also opportunity identification at an early stage.</p>

<p> Groundwater is an essential input to agriculture world-wide, but it is clear that current rates of groundwater use are unsustainable in the long term. This dissertation assesses both current use of groundwater for country- to global-scale agriculture, and looks at the future of groundwater. The focus is on 1) quantifying food directly produced as a result of groundwater use across spatially-varying agricultural systems, 2) projecting future groundwater demands with consideration of climate change and human decision-making, and 3) understanding the system dynamics of groundwater re-use through surface water systems. All three are addressed using a process-based model designed to simulate both natural and human-impacted water systems. </p><p> Irrigation can significantly increase crop production. Chapter 1 combines a hydrology model (WBM) with a crop model to quantify current crop production that is directly attributed to groundwater irrigation in China. Unsustainably-sourced groundwater &mdash; defined as groundwater extracted in excess of recharge &mdash; accounted for a quarter of China&rsquo;s crop production, and had significant spatial variability. Climate variability and groundwater demand magnified one another in hot and dry years, causing increased irrigation demand at the same time as limited surface water supplies. </p><p> Human decisions about water resource management can impact both the demand and sustainability of groundwater use. Chapter 2 takes an interdisciplinary approach to projecting India&rsquo;s future (to 2050) groundwater demands, combining hydrology and econometric modeling. The econometric model projects how humans make decisions to expand or contract the irrigated land area of crops in response to climate change. Even in areas with precipitation increases, human decisions to expand irrigated areas led to increasing demands for groundwater. We additionally assessed the potential impact of a large water infrastructure project to alleviate groundwater demands in India, and found that maximum alleviation (up to 16%) was dependent upon the storage volume and location of new reservoirs. </p><p> One proposed method for reducing the world&rsquo;s demand for groundwater is to increase the efficiency of agricultural water use. However, these same inefficiencies cause a portion of extracted groundwater to enter surface water systems; it can then be reused, creating a complex system in which groundwater demand does not linearly decline with increased water use efficiency. Chapter 3 quantifies the amount of groundwater that enters surface water systems, the number of times this water is reused for agriculture, and the minimum amount of groundwater required by current agricultural systems in the hypothetical scenario of perfect irrigation efficiency.</p>

<p> This study assessed the effect of an application of mycorrhizal fungi to stormwater filter media on urban bioswale soil and stormwater in an infiltration-based bioswale aged 20 years with established vegetation. The study tested the use of commercially available general purpose biotic soil blend PermaMatrix^&reg; BSP Foundation as a treatment to enhance Earthlite&trade; stormwater filter media amelioration of zinc, copper, and phosphorus in an ecologically engineered structure designed to collect and infiltrate urban stormwater runoff before it entered the nearby Willamette River.</p><p> These results show that the application of PermaMatrix^&reg; BSP Foundation biotic soil amendment to Earthlite&trade; stormwater filter media contributed to the reduction of extractable zinc in bioswale soil (-24% and -26%), as compared to the control, which received a treatment of Earthlite&trade; stormwater filter media only, and experienced an increase in extractable zinc levels (23% and 39%). The results presented also show evidence that after establishment mycorrhizal treatment demonstrated lowered levels of phosphorus in bioswale soil (-41%) and stormwater (-100%), in contrast to the control, which had increased phosphorus levels. The treatment contributed to reductions between 67% and 100% in every metric detected in stormwater after an establishment period of 17 weeks, while the bioswale with no mycorrhizal treatment had increases between 50% and 117%. Treatment also appeared to enhance the reduction of ammonium and nitrates, while contributing to a greater increase in soil pH. </p>

<p> Every year, hundreds of thousands of people visit the Native American ancestral lands in the western United States developed for tourism and recreation. The stewards of these lands seek to engage visitors and enrich their experience, and simultaneously to protect the lands&rsquo; natural and cultural resources. To achieve their mission, protected areas regularly use <i>interpretation </i>&mdash;materials and experiences that aim to educate visitors about resources and see them as personally meaningful. However, there is little literature on interpretive content in protected areas, few qualitative studies of interpretation as constructed by visitors and interpreters, and little literature on the representation of Native Americans in museums and protected areas. </p><p> I consider the public presentation of archaeology at exemplary protected areas in the U.S. Southwest and Great Basin within a theoretical framework of governmentality and representation. Within a mixed-method research design, this project used participant-observation at thirteen protected area locales to identify interpretive content and representational strategies, and semi-structured interviews with 31 individuals to elicit staff and visitors&rsquo; understandings of interpretation and display. This research found three types of narratives in the interpretation sampled&mdash;scientific narratives, cultural narratives, and management messages. In general, scientific narratives appeared more frequently than cultural narratives and both appeared more frequently than management messages. Archaeology dominated scientific narratives, cultural continuity dominated cultural narratives, and orientation dominated management messages. In general, archaeology appeared with greater relative frequency than any other component of interpretive content. This study also found that interpretation predominantly adopted a third-person omniscient point of view and represented people predominantly in the ancient past. </p><p> This study has both academic and applied outcomes. The work aims to contribute to the scant body of literature on interpretive content in protected areas stewarding natural and cultural resources, the few qualitative studies of interpretation as constructed by visitors and interpreters, and the existing literature on the representation of Native Americans in museums and protected areas as well as informing future interpretive practice. These findings inform a report on contemporary interpretive practice and recommendations for the public presentation of archaeology delivered to the US Fish and Wildlife Service in December 2013.</p>

<p> If there is a leitmotif to American criticism of the past fifty years it is that America, exceptionally, was not discovered but constructed. Those in a new world void of self-evident tradition or the conventional markers of history, the story goes, invented an organic truth to their past experience, current interests, and future intentions. They constructed cultural memory. Fiction from the early national period, critics argue, variously reflects, exposes, challenges, and participates in this hegemonic process. </p><p> This project is dedicated to another group of American writers who insisted that the land did speak: Mormon and Gentile immigrants who walked west the breadth of a new nation and in their journals described haunted rock cities and uncanny Indian massacres. In these descriptions, poetic patterns prove more powerful than manifest appearances. The complex erosion and accretion of these rock cities and these massacre stories prompts reassessment of nineteenth-century Euro-American settlers&rsquo; relationship with the land and the land&rsquo;s inhabitants and alternate interpretations of the seminal texts of American Romanticism. </p><p> In Chapter 1, I consider Idaho&rsquo;s City of Rock&rsquo;s mythical Almo Massacre in the context of Mormon prophecy, theology, and history. In this reading, I am centrally concerned with the effects of the story&rsquo;s poetics: how does the Almo-Massacre story invent and perform the nation? The Mountain Meadows Massacre, and its translation from its authentic site to the site of its mythical reenactment in the City of Rocks, is my central concern in Chapter 2. Chapter 2 reminds us that trauma narratives are never about authentic specifics of place, time, or experience but about synesthetic sense: how things feel. This sense is artifactual, and thus heritable and transportable. This revelation informs my readings of the journals of America&rsquo;s nineteenth-century overland immigrants who walked west and described not the virgin land of American myth but contested space. In Chapter 4, I turn to three of America&rsquo;s canonical nineteenth-century nation stories: Washington Irving&rsquo;s &ldquo;Rip Van Winkle,&rdquo; James Fenimore Cooper&rsquo;s <i>The Last of the Mohicans </i>, and Mark Twain&rsquo;s <i>The Adventures of Huckleberry Finn </i>. In these stories, the world-as-felt matters as fully as the world-as-seen. </p>

Thesis (MBA)--Stellenbosch University, 2008. / ENGLISH ABSTRACT: In the past decade or two companies started to realise that competitive advantage is not only achieved by optimising their business value chain, but also in managing the knowledge in the company. This led to the development of different knowledge management models and to millions of dollars being spent on knowledge management implementations across the world. Although there were huge successes, a large number of initiatives were spectacular failures - believed to be mainly caused by the linear method of capturing and presenting knowledge. Computer-based mapping tools is a new generation of personal computer (PC) based tools that allow people to present knowledge graphically. Since the focus of most research into computer-based mapping tools has been on the educational use of mapping tools, the focus of this study will be on the business use of these tools. Thus a number of common, off-the-shelf computer-based mapping tools were evaluated to determine whether they can add business value. From the evaluation a decision matrix was developed to assist knowledge workers in selecting the best tool for a specific application. The primary activities of the knowledge value chain model were investigated to select a series of business activities where the use of computer-based mapping tools could possibly generate more business value in the execution of the business activity. These activities were then measured against a set of criteria that was developed in order to evaluate the different computer-based mapping tools. It was found that the selected software applications could be clearly separated based upon their theoretical and philosophical backgrounds into concept mapping tools and mind mapping tools. It was further found that the possible business value that could be derived through the use of these tools is more dependent on the selection of the correct type of tool, than on the selection of a specific software package. Lastly it was found that concept mapping tools could be used across a broader spectrum of business activities. The research also reached the conclusion that the use of concept mapping tools will possibly add more value to a business than the use of mind mapping software. / AFRIKAANSE OPSOMMING: Gedurende die afgelope dekade of wat het maatskappye al meer begin besef dat hulle mededingingsvoordeel nie net geleë is in hoe goed hulle die besigheid se waardeketting kan optimiseer nie, maar dat die kennis in die maatskappy ook beter bestuur moet word. Dit het tot gevolg gehad dat 'n aansienlike hoeveelheid kennis bestuursmodelle ontwikkel is en dat miljoene dollar gespandeer is op die implementering van kennis bestuurstelsels. Ten spyte van groot suksesse wat behaal is, was daar ook totale mislukkings. Die vermoede bestaan dat een van die redes vir die mislukkings die liniêre manier is waarop kennis vasgevang en aangebied is. Rekenaar-gebaseerde karteringspakkette is 'n nuwe generasie van persoonlike rekenaar programmatuur wat gebruikers in staat stel om kennis grafies voor te stel. Die meeste navorsing oor die gebruik van rekenaar-gebaseerde karteringspakkette het egter op die opvoedkundige aspek daarvan gefokus. In hierdie navorsing val die fokus eerder op die besigheidsgebruik van sodanige gereedskap. 'n Aantal algemeen beskikbare, van-die-rak pakkette is ge-evalueër om vas te stel of hulle waarde tot 'n besigheid kan toevoeg. Vanuit hierdie evaluering is In keuse-matriks saamgestel om kenniswerkers in staat te stel om die beste pakket vir 'n spesifieke besigheidsaktiwiteit te kies. Die primêre aktiwiteite van die kennis waardeketting model is ondersoek ten einde 'n aantal besigheidsaktiwiteite te kan selekteer wat moontlik meer waarde tot die besigheid kan toevoeg deur die gebruik van rekenaar-gebaseerde karteringspakkette. Die geselekteerde aktiwiteite is gemeet teen 'n reeks kriteria wat ontwikkel is om die verskillende rekenaar-gebaseerde karteringspakette teen mekaar op te weeg. Die navorsing het bevind dat die geselekteerde programmatuur pakkette hoofsaaklik in twee groepe val op grond van hulle teoretiese en filosofiese funderings, naamlik konsepkaarte en gedagtekaarte. Verder is vasgestel dat meer besigheidswaarde ontsluit word deur die keuse van die regte tipe programmatuur vir 'n spesifieke aanwending as deur die keuse van In spesifieke programmatuur pakket. Laastens is bevind dat konsepkaarte oor 'n wyer verspreiding van besigheidsaktiwiteite gebruik kan word. Eventueel kan afgelei word dat die gebruik van konsepkaarte meer waarde tot 'n besigheid sal toevoeg as die gebruik van gedagtekaarte.

This dissertation provides a foundation for electronic information management in organizations. It focuses on the relationships among communication, control, and information flows of the organization. The main thesis addresses the question of how electronic mail messages may be managed according to their contents, ensuring at the same time, the preservation of organizational and social relationships. A taxonomy for the management of unstructured electronic information relevance based on the treatment of information is derived from current research. Among the three paradigms, the information processing, the information distribution, and the information sharing paradigms, the inadequacy of the first two is recognized, and the treatment of information in its active mode is proposed. This taxonomy can be used to quickly differentiate one research from another and evaluate its adequacy. Three concepts, four cornerstones, and an architecture constitute our framework of information relevance management. The cornerstones are knowledge of the organization, knowledge of the individual, information construction, and information interpretation. Through knowledge of the organization and the individual, the machine production systems are able to distribute and manage information according to the logic of human production systems. The other two cornerstones together improve the unity of interpretation among the organizational members. The physical architecture can adapt a number of applications, each of which, may not only have different knowledge presentations and inference mothods, but also may co-exist in the system simultaneously. An integrated knowledge-based electronic messaging system, the AI-MAIL system, is built, tested, and evaluated through a case study to demonstrate the feasibility of the architecture and its applicability to the real-world environment. The three operating levels, interorganizational, intraorganizational, and individual, are illustrated through a study of the U.S. Army. From three large scale field studies, the existing AUTODIN I system, a backbone of the Army's communications, is analyzed and evaluated to illustrate the applicability and benefits of the three operating levels. This dissertation contributes to the field of Management Information Systems by offering a methodology, a taxonomy, a new paradigm, a framework, and a system for information management and a method of adaptive organizational design. In addition, it points toward future research directions. Among them are research to deal with ethical issues, organizational research, knowledge engineering, multi-processor configuration, and internal protocols for applications.

<p> Successful collaborations take effort. This study analyzed the process followed by 20 groups of diverse professions that were brought together to solve a community health problem. To this goal a four part model of conflict was adapted and used to understand how conflict emerged, was managed or resolved. The model allowed for the identification of five routes to conflict. Conflict was either averted or managed constructively by most of the groups and a set of productive behaviors is associated with this ability. Experienced collaborators utilize these behaviors at various times throughout the collaborative process to promote group cohesion and the possibility of integrating differences and transforming them into more creative outcomes. Conflict is found to be neutral; for some groups it is stagnating while others are able to use it constructively.</p>

<p> There are three hypotheses for this research: 1. High school mathematics students in urban public schools, who are provided interactive technology resources during normal course work, will experience a multiplier effect of enhanced learning in mathematics. They will have an increase in positive dispositions indicative of their identity development as competent doers of math. 2. Through focusing on solving problems that relate to the life-world of students, students will experience an increase in the levels of solidarity with participants of the course. This will have a positive impact of the learning experiences and achievement of students. 3. Students will develop increased value of using their developing competencies in math to model and analyze issues relevant to their communities.</p><p> The purpose of this research is to study effective utilization of interactive technologies and math computer programs in public high school mathematics classes. The interactive technologies used in classes are to support graphical, tabluar, verbal and analytical representations of the mathematics in hopes of increasing the learning potential and math fluency of students. The research will serve as a basis for ongoing development of teaching practices that improve student achievement in mathematics. </p><p> The research design is an interpretive / phenomenological study of evolving attitudes and practices of students as they are engaged with math problem solving. Students will not be asked to produce any data solely for the purposes of the research. All activities that students do, and all data that will inform the research, will emerge from best teaching practices, which are supported by the school principal and have been formally approved by the school board. All methods and strategies employed in this study are ones I have used, over the past six years, in my role as a highly qualified math teacher in Newark public schools. No changes in what happens will occur because of this dissertation study. </p><p> The research design is an interpretive / phenomenological study of evolving attitudes and practices of students as they are engaged with math problem solving. Students will not be asked to produce any data solely for the purposes of the research. All activities that students do, and all data that will inform the research, will emerge from best teaching practices, which are supported by the school principal and have been formally approved by the school board. All methods and strategies employed in this study are ones I have used, over the past six years, in my role as a highly qualified math teacher in Newark public schools. No changes in what happens will occur because of this dissertation study. </p><p> Not all teachers are implementing the best practices that this study focuses on. I want to shed light on these practices and show how they can become more common and done in a more collaborative way. Students can opt not to use technologies at all, but it is not likely they would want to since doing so would slow down their progress. Teachers, however, are required to teach math with using various technologies, such as in an advanced graphing calculator or an interactive smart board. This is a case of, students are using technology in classes, gaining advantages with this technology use, and I would just like to analyze it write about my findings in my dissertation. Please see the school issued student calculator contract included with this application. It shows that math teachers are required to teach with school approved technologies, in this case a newer handheld graphing calculator), but that students may opt not to use it. Furthermore, many teachers don't yet know how to use these newer school approved technologies and must be shown the methods and benefits.</p>