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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
91

Site-level integration of information technologies in construction : an empirical study of information technology adoption

Howe, Justin Michael 24 March 2014 (has links)
The availability of information technologies (IT) that can be harnessed to support construction projects at the site-level (e.g. tablets devices) continues to increase substantially. Most computer devices and IT resources today are designed for mobility, providing construction onsite personnel potential access to electronic resources and relevant information while on the construction site or in the construction field office; enabling the possibility of real-time data exchanges amongst various project entities, unrestricted by location. Recent industry literature has highlighted the benefits associated with the use of onsite emerging construction IT and, as a result, construction organizations are showing a strong interest in implementing these technologies to improve and develop more cost effective construction document management and communication processes. Despite the perceived benefits, the construction industry has been slow to adopt IT, particularly in the construction execution phase and, more specifically, at the site-level. This research aims to analyze the industry's current state of construction field and office personnel's use and proficiency related to IT. This study also offers insight into the impacts the adoption of IT has on field personnel's onsite processes, and identifies industry-specific barriers associated with the adoption of IT. To extend the knowledge related to IT usage of project site-level personnel, the results of a survey, follow-up interview, and an IT training and evaluation study were reviewed. These tools helped to investigate and acquire data regarding site managers' and field engineers' technology-related competence, their applications of IT to produce work artefacts, and circumstances in which users and technology hinder the adoption of IT in construction. Collectively, an analysis of the results revealed that the construction industry's current state of IT adoption at the site level is more advanced than previously perceived; particularly with the use of basic technology and software tools. Furthermore, the results offer a foundation for determining "areas of improvement" for increased adoption of IT in an onsite environment. Industry business-related limitations and individual's technology proficiency currently present the prevalent barriers related to the hindrance of adoption. The inadequate effectiveness of IT to support field personnel's daily processes was also found to a be a contributory constraint. / text
92

Modeling adoption of solar photovoltaics and analysis of net metering in the city of Austin

Josyula, Siva Kiran 30 September 2011 (has links)
Solar photovoltaics have received government support in the form of rebates, tax credits and net metering tariff mechanisms. The intended goal of these incentives is to encourage innovation in the manufacturing and installation of these systems, which is expected to eventually help overcome the high cost barrier for the adoption of the technology. These systems have the advantages of abundant availability of the solar resource, low environmental footprint, and the possibility of onsite installation, reducing the need for additional generation and transmission capacity. Since millions of dollars have been invested in these incentive programs, there is an interest in tracking the progress in the cost and capacity installed. In the first part of this thesis, I analyzed the trends in costs and adoption of solar PV by residential and commercial customers in the city of Austin. This is accomplished by tabular and graphical analysis of data on PV installations from 2004, when Austin Energy’s rebate program started, to early 2010. In the second part of the thesis, I used technology diffusion models to analyze and forecast the diffusion of residential PV systems in Austin. Three types of models were used to model the adoption trends: Logistic growth model, Bass model without price effects and Bass model including price effects. In the final part of the thesis, I analyzed the net metering tariff mechanism in Austin and studied the difference between the current and an alternative tariff. The alternative tariff uses actual ‘grid usage’ to calculate the energy charge (cost of providing distribution service) instead of the ‘net energy consumed’ that is currently in use. Using simulated PV generation data and ERCOT load profile data, I calculated the difference in revenue for Austin Energy with the alternative tariff. The results indicate that the alternative tariff adds little revenue to Austin Energy’s energy charge revenues at the current level of penetration of solar PV. However, at a higher penetration level of PV, the alternative tariffs might result in significant additional revenue for the utility. The thesis concludes with a discussion on the possible rationale for the alternative tariff and directions for future research. / text
93

An investigation of internet adoption factors in New Zealand's small - and medium-sized enterprises - from an industrial perspective

Chung, Kathy Nai-Wen January 2006 (has links)
This thesis aimed to investigate the impact of firm- and industry-specific factors on the decision to adopt Internet technologies among SMEs in New Zealand's retail and tourism industries. A mail survey was sent to 500 retail SMEs and 1,000 tourism SMEs, with response rates of 26.4 percent and 33.4 percent respectively. The results indicated that, in a comparison of perceived benefits, organizational readiness and external pressure, the most important factor in determining the adoption decision was the perceived benefits. Overall, the level of Internet support, business size, international business, and years on the Internet were the most important structural factors in determining Internet technology adoption. When comparing retail and tourism SMEs, the level of Internet support within a firm, business size, and years on the Internet were more important factors for the tourism SMEs than for their retail counterparts. On the other hand, business type and international business were more important factors for retail SMEs than they were for tourism firms. The research also found that tourism SMEs experienced greater pressure from the external environment to adopt Internet technologies than did retail firms.
94

Economic Analysis and Willingness to Pay for Alternative Charcoal and Clean Cook Stoves in Haiti

Sagbo, Nicaise S 01 January 2014 (has links)
Conventional charcoal and firewood are the main source of energy in Haiti. They provide up to 90% of the country’s energy for domestic and industrial use, resulting in severe environmental and health issues. The present study is initiated to better understand the reasons why two promising alternative technologies (improved cookstoves and alternative charcoal briquettes) have experienced low adoption in Haiti. The research was carried out in two districts in southern Haiti where the improved stoves and briquettes production units exist and where households benefited from a program distributing the improved stoves. This project contributes to the literature by gauging interest in the improved stove and briquettes, as well as their specific characteristics. It helps understand factors that affect the adoption and dis-adoption of the technologies. Additionally, the research measures tangible benefits for households that adopted the improved stoves. The study reveals that the use of the improved stoves lowers fuel expenditures by 14.6 cents/day to 23.6 cents/day. Haitian consumers are interested in both the stove and briquettes, but their willingness-to-pay depends on their personal characteristics such as location and income. The study has revealed two surprising results as well: Unnecessary dis-adoption of the stoves occurs because the two technologies were needlessly marketed together. Despite the target audience, which is poor and rural consumers, the improved stove is perceived as a rich, urban user’s technology.
95

Food safety standards in developing countries: Exploring the role of financial literacy

Müller, Anna Katharina 12 February 2015 (has links)
No description available.
96

The adoption of Knowledge Management Systems in Mexico : A Quantitative Study

Prado Tamez, Luis Ernesto January 2014 (has links)
Knowledge is a very important asset for organizations; it is one of the best sources of competitive advantage. Knowledge Management is used to effectively capture and apply knowledge in organizations. This task is usually carried out with the help of knowledge management systems, which serve for the creation, transfer, application and storage/retrieval of knowledge. Currently in Mexico the level of KM in organizations is not at the level that it could be. It seems that organizations are having a hard time applying the practices and level of KM that organizations in first world countries have achieved. The purpose of this study is to understand what factors drive employees in Mexico to adopt knowledge management systems. With these results organizations will know what factors they should pay close attention to, and it will shed light into what actions or interventions they should take in order to increase the adoption level of KMS. In order to do this, a research framework was designed based on a review of theoretical models used to study the adoption of technology, as well as previous KM adoption studies. And by applying a survey questionnaire, which received a total of 953 valid responses, through which several hypotheses were tested, it was found that subjective norm and efficiency gains have a significant positive influence over perceived usefulness, which in turn has a significant positive influence on the intention to use and attitude towards use of KMS. Subjective norm also influences image, which itself also influences perceived usefulness. It was also found that perceived ease of use has a positive influence on attitude towards use, perceived usefulness and attitude towards use. Finally voluntariness influences attitude towards use which in turn influences intention towards use, which is the primary factor that we wish to influence for usage behavior. The most important factors that organizations in Mexico, particularly in Monterrey, should pay attention to when seeking to increase the level of adoption of KMS are the following, in order of relevance: perceived usefulness, perceived ease of use, subjective norm, efficiency gains, voluntariness and image.
97

Optimising operations effectiveness and capacity at a heavy engineering plant / Reid A.

Reid, Alan Michael January 2011 (has links)
This study focuses on optimising operations effectiveness and capacity at a heavy engineering plant, namely Heavy Engineering Vereeniging, a division of DCD–DORBYL (Pty) Ltd. The implementation and adoption of technology was included in the investigation. The company operates from 2 premises in Vereeniging and Vanderbijlpark (Gauteng), and consists of 5 factory buildings. A literature review was conducted to ascertain current industry best practises and technology implementation initiatives. This review included a discussion on the following aspects: Capacity and its utilisation, flexible technology and advanced manufacturing systems, technology in manufacturing, capacity expansion and scheduling, factory layouts, technology and capacity utilisation in a South African context, and finally future trends in capacity and technology at Heavy Engineering Vereeniging. Data collection from within the organisation was done via the issuing of a questionnaire and conducting interviews with various management and supervision employees. The gathered data was analysed for employees’ opinions on current utilisation of capacity and use of technology, as well as suggestions regarding improved working methods, factory layout and the implementation of new technology. The quantitative data was analysed using the Statistical Package for the Social Sciences software, with the provided descriptive statistical test results used for the identification of possible trends and further interpretation. It was found that current capacities and equipment are being well utilised, but not to their optimal level. The well entrenched management information systems, measurement systems and operating procedures currently in use will aid to increase the level of utilisation of the available capacity and equipment. The implementation of technology and latest best practises within the operation will gain HEV a competitive edge, ensuring their future sustainability and market leadership. However, this implementation must be done with the input and buy in of the work force. The variances in perceptions and attitudes between the various job functions, discovered during the statistical analysis, must be taken into cognisance during any capacity optimisation or technology implementation initiative. Continued capital expenditure and the current drives in research and development need to be maintained to further ensure sustainability. Various inefficiencies were identified and recommendations were made to improve the current operation’s effectiveness and factory layout, primarily by decreasing operating inefficiencies. The recommendations were made based on the results of the study and included the expenditure involved in their execution. Financially viable options, calculated using payback periods and net present values (NPV), included the purchase of phased array ultrasonic testing equipment, horizontal SAW for longitudinal flanges and a modular type furnace. Other options, which could improve operations effectiveness, but not returning financially positive results, included the moving of the Hausler roll into the main fabrication workshop and the moving of the Sachems drills to alongside the lathes. A number of new processes and initiatives were recommended, for which cost comparisons to current similar practices could not be performed. These included the full production implementation of the punch through tandem arc submerged arc welding for wind turbine tower manufacture, implementation of a customer interfacing and communication platform and internal communication display boards. Current practises regarding touch time measurements for welding and drilling were validated. By undertaking these recommendations, it was felt that HEV would continue to be wepositioned to capture the predicted ongoing growth in the mining market in which they currently operate, and to fully benefit from the future upturn in the energy market. / Thesis (M.B.A.)--North-West University, Potchefstroom Campus, 2012.
98

Case Study of E-book Use in an Academic Library: A Communication Perspective

Bratanek, Laura A. 06 March 2013 (has links)
This research examines the integration of electronic book (e-book) technology within an academic library. The University of Ottawa library is explored as a qualitative case study. The perceptions of use and communication pertaining to e-book adoption from the perspectives of students, faculty members, and librarians are combined with other documentation to provide a comprehensive examination of the case. Rogers (1962; 2003) Diffusion of Innovations provides the theoretical framework to guide the study and structure its analysis. Main findings revealed the following: (1) participants preferred print books, (2) inadequate communication occurred between students, faculty members, and librarians, and (3) information literacy training initiatives were insufficiently standardized. This study contributes to communication research by examining adoption of e-book technology and the spread of ideas within a social environment. It also furthers Diffusion of Innovations by confirming that even when individuals acknowledge advantages of a communication technology, it is not necessarily adopted.
99

Optimising operations effectiveness and capacity at a heavy engineering plant / Reid A.

Reid, Alan Michael January 2011 (has links)
This study focuses on optimising operations effectiveness and capacity at a heavy engineering plant, namely Heavy Engineering Vereeniging, a division of DCD–DORBYL (Pty) Ltd. The implementation and adoption of technology was included in the investigation. The company operates from 2 premises in Vereeniging and Vanderbijlpark (Gauteng), and consists of 5 factory buildings. A literature review was conducted to ascertain current industry best practises and technology implementation initiatives. This review included a discussion on the following aspects: Capacity and its utilisation, flexible technology and advanced manufacturing systems, technology in manufacturing, capacity expansion and scheduling, factory layouts, technology and capacity utilisation in a South African context, and finally future trends in capacity and technology at Heavy Engineering Vereeniging. Data collection from within the organisation was done via the issuing of a questionnaire and conducting interviews with various management and supervision employees. The gathered data was analysed for employees’ opinions on current utilisation of capacity and use of technology, as well as suggestions regarding improved working methods, factory layout and the implementation of new technology. The quantitative data was analysed using the Statistical Package for the Social Sciences software, with the provided descriptive statistical test results used for the identification of possible trends and further interpretation. It was found that current capacities and equipment are being well utilised, but not to their optimal level. The well entrenched management information systems, measurement systems and operating procedures currently in use will aid to increase the level of utilisation of the available capacity and equipment. The implementation of technology and latest best practises within the operation will gain HEV a competitive edge, ensuring their future sustainability and market leadership. However, this implementation must be done with the input and buy in of the work force. The variances in perceptions and attitudes between the various job functions, discovered during the statistical analysis, must be taken into cognisance during any capacity optimisation or technology implementation initiative. Continued capital expenditure and the current drives in research and development need to be maintained to further ensure sustainability. Various inefficiencies were identified and recommendations were made to improve the current operation’s effectiveness and factory layout, primarily by decreasing operating inefficiencies. The recommendations were made based on the results of the study and included the expenditure involved in their execution. Financially viable options, calculated using payback periods and net present values (NPV), included the purchase of phased array ultrasonic testing equipment, horizontal SAW for longitudinal flanges and a modular type furnace. Other options, which could improve operations effectiveness, but not returning financially positive results, included the moving of the Hausler roll into the main fabrication workshop and the moving of the Sachems drills to alongside the lathes. A number of new processes and initiatives were recommended, for which cost comparisons to current similar practices could not be performed. These included the full production implementation of the punch through tandem arc submerged arc welding for wind turbine tower manufacture, implementation of a customer interfacing and communication platform and internal communication display boards. Current practises regarding touch time measurements for welding and drilling were validated. By undertaking these recommendations, it was felt that HEV would continue to be wepositioned to capture the predicted ongoing growth in the mining market in which they currently operate, and to fully benefit from the future upturn in the energy market. / Thesis (M.B.A.)--North-West University, Potchefstroom Campus, 2012.
100

'I've got a feeling' : the effect of haptic information on the preferred location of purchase of guitars and stringed wooden instruments

Pirie, Elliot January 2017 (has links)
This thesis develops technology adoption and sensory information literatures through an evaluation of antecedents to consumers’ purchase location intention of Musical Instruments (MI). With the unique factor of instrument heterogeneity MI e-retail sales are information asymmetric propositions, where the consumer may make a sub-optimal purchase online having foregone the opportunity to experience the haptic information required to ascertain the instrument’s true quality. Despite a reticent adoption of MI e-retail from the traditional retail industry online MI sales are increasing, resulting in off-line marketplace contraction, thus investigation of consumers’ online MI purchase motivations is of value to the industry. The exploration of this topic uses a pragmatic, two-stage mixed-methods process incorporating inductive in-depth interviews with MI retail industry personnel, followed by deductive MI consumer based quantitative questionnaires. The reluctance to adopt e-retail is based on ‘expertise-led aversion’ and ‘expertise gap’ where key MI retail influencers attempt to enforce their own views on the correct way to purchase an instrument, rather than responding to consumer trends. This aversion was influenced by their own reliance on haptic information, coupled with knowledge of instrument heterogeneity and their level of musicianship. Consumer research conclusions identify that high haptic-need consumers, who tend to have greater ability and involvement, are more likely to purchase in-store whilst those with lower haptic needs are more willing to purchase MI online. Through the design and empirical testing of the Musical Instrument Need-for-Touch (MINFT) model numerous factors were identified as moderators to this basic supposition. The subsequent development of a MI consumer typology identified five distinct groups that respond to differing stimuli in relation to MI purchase location intention. These findings add to the academic discourse and enable MI retailers to enhance their offerings both in-store and online, leading to more effective targeting of their key customers.

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