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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.
11

An Integrated Data Acquisition System for Parachute Development and Qualification Testing

Starbuck, Philip 10 1900 (has links)
ITC/USA 2010 Conference Proceedings / The Forty-Sixth Annual International Telemetering Conference and Technical Exhibition / October 25-28, 2010 / Town and Country Resort & Convention Center, San Diego, California / The development and qualification of personnel and cargo aerial delivery parachute systems present unique challenges to the instrumentation and data analysis engineers. Some of the areas that must be addressed include: a) system must be low in cost, b) system often has to be operated on ranges that have limited telemetry or other range instrumentation and support (i.e. commercial skydiving centers), c) system is often rigged and operated by parachute support personnel and test jumpers rather than instrumentation engineers, and d) system must be able to be reconfigured in the field to support a variety of test card requirements during a typical test day, e) data must be available for review and the system be prepared for the next test within a few minutes of parachute recovery, and f) system must withstand ground impact velocities as high as 50 ft/sec (15.24 m/sec) without damage. This paper describes such a system as it is being used for the development and qualification testing of a number of parachute systems for sport skydiving, military personnel, as well as cargo parachute systems. This modular system has been developed as a result of previous experience in other parachute development and qualification projects to address the need for a flexible Data Acquisition System (DAS) system that meets the above requirements. This paper describes some of the tools used to meet these requirements.
12

A Comparison of Three Teacher Evaluation Methods and the Impact on College Readiness

Smalskas, Tamy L. 12 1900 (has links)
Much attention in recent years has gone to the evaluation of teacher effectiveness, and some scholars have developed conceptual models to evaluate the effectiveness. The purpose of this study was to compare three teacher evaluation models – the Texas Professional Development Appraisal System (PDAS), the teacher index model (TI), and the value-added model (VAM) – to determine teacher effectiveness using student demographic and longitudinal academic data. Predictive data from students included economic disadvantage status, ethnicity, gender, participation in special education, limited English proficiency, and performance on Texas Assessment of Knowledge and Skills (TAKS). Data serving as dependent variables were scores from Scholastic Aptitude Test (SAT®) verbal/critical reasoning and mathematics. These data came from 1,714 students who were 9.7% Hispanic, 9.2% African American, and 81.2% White. The models were tested for 64 English language arts teachers and 109 mathematics teachers, using student examination scores from the SAT® verbal/critical reasoning and mathematics. The data were aligned for specific faculty members and the students whom they taught during the year of the study. The results of the study indicated that the TI and VAM explained approximately 42% of the variance in college entrance exam scores from the SAT® verbal/critical reasoning and mathematics (R2 = 0.418) across mathematics and English language arts teachers, whereas the TI model explained approximately 40% of the variance in the SAT® scores (R2 = 0.402). The difference, however, in the R-squared values between the VAM and the TI model was not statistically significant (t (169) = 1.84, p > 0.05), suggesting that both models provided similar results. The least effective model used to predict student success on college entrance exams was the PDAS, which is a state-adopted model currently in use in over 1,000 school districts in Texas, The teacher PDAS scores explained approximately 36% of the variance in student success on the SAT® (R2 = 0.359). The study provides school leadership with information about alternative methods of evaluating teacher effectiveness without difficult formulas or high costs associated with hiring statisticians. In addition, results indicate that the models vary significantly in the extent to which they can predict which teachers are most effective in preparing students for college. This study also emphasizes the critical need to provide teacher evaluations that align with student achievement on college entrance exams.
13

Understanding the role of e-skills in the utilisation of electronic small business development support services

Katunga, Natasha January 2013 (has links)
<p>&nbsp / </p> <p>The Internet is now facilitating the provision of an increasing number of services. Thus, technology has become a more integrated part of people‟s daily routine. Some of these technologies include electronic communication, online banking, and shopping as well as electronic learning - to name but a few. However, for various reasons, such as limited formal education (which is a key promoter of reading and writing skills), access and skills, not everyone has an equal opportunity to benefit from the use of these technologies. The unequal distribution of opportunities of such nature is often broadly referred to as the <i><font size="3" face="Arial,Arial"><font size="3" face="Arial,Arial">digital divide</font></font><font size="3">. That is the gap between those who have access to Information and Communication Technology (ICT) and those who do not. One noted challenge that influences the use of ICT consists of socio-economic conditions, which together elicit high levels of poverty. An identified strategy for uplifting these areas was (and still is) entrepreneurship, notably small businesses. These small businesses however, generally have very short and mostly unsuccessful lives. As a result the government at all levels (national, provincial and local) has endeavoured to provide support to these businesses. Some of this support is provided through mediums, such as the Internet (here named &quot / electronic support&quot / ) to assist these small businesses. This support, which comes from government, is however, not being fully utilised by the intended beneficiaries. Thus, the small businesses are not benefiting from the support provided. Consequently, many are still experiencing a short and unsuccessful existence. This research thus analyses the small businesses in areas of the greater Cape Town, which are characterised by high levels of poverty and unemployment. <font size="3">Previous studies in these areas have reported the lack of ICT related skills, also known as electronic skills (e-skills), as one of the reasons for the low uptake of electronic support (e-support). This e-support is provided by various levels of government through selected agencies (service providers). In essence, this study is aimed at investigating the influence of e-skills in the access and use of the provided e-support by owners of small businesses. Considering that the lack of adequate e-skills has been identified as influencing the use of e-support, the study also aims to identify the e-skills needed to fully utilise the provided e-support. The approach to this investigation included a review of pertinent literature and devising a conceptual model. This model was then tested in the empirical setting of this study. This setting included: (i) Providers of e-support (various specialised government agencies) and (ii) the intended beneficiaries of this e-support, i.e. small businesses in the previously disadvantaged areas (PDAs) of the greater Cape Town. Through the use of case study methodology and face to face interviews, it was found that many small business owners were not able to appropriately use the provided e-support. This was due to their lack of e-skills, which resulted in their inability to use ICT. Additionally, some were unaware of the existence of the e-support or the service providers. During the review of pertinent literature done as part of the study, an e-skills framework was designed. The framework identified the e-skills considered necessary in order for small business owners to effectively utilise the provided e-support and other technologies. The e-skills framework suggested by this study could be used as a tool to assist: (i) The providers of e-support to understand the usage of their services and enable (ii) a more informed understanding of the need for appropriate e-skills among small business owners, in relation to their use of the provided e-support. Additionally, (iii) small business owners should be in a better position to recognise the benefits of using technology, especially the Internet. <font size="3">The contribution of this study is seen as twofold. Firstly, it should assist the providers and users of e-support. This is done by addressing the practical side of the provision and usage of these services. Secondly, the study contributes an informative e-skills framework related to the effective use of e-support. This study also furthers academic knowledge in the area of the investigation, and suggests further directions for research. Considering, the limited small business sample (only participants from three PDAs), the generalisation of this study is limited. This limitation does not however, influence the validity of this research, or the credibility of the findings. </font></font></font></i></p>
14

Understanding the role of e-skills in the utilisation of electronic small business development support services

Katunga, Natasha January 2013 (has links)
<p>&nbsp / </p> <p>The Internet is now facilitating the provision of an increasing number of services. Thus, technology has become a more integrated part of people‟s daily routine. Some of these technologies include electronic communication, online banking, and shopping as well as electronic learning - to name but a few. However, for various reasons, such as limited formal education (which is a key promoter of reading and writing skills), access and skills, not everyone has an equal opportunity to benefit from the use of these technologies. The unequal distribution of opportunities of such nature is often broadly referred to as the <i><font size="3" face="Arial,Arial"><font size="3" face="Arial,Arial">digital divide</font></font><font size="3">. That is the gap between those who have access to Information and Communication Technology (ICT) and those who do not. One noted challenge that influences the use of ICT consists of socio-economic conditions, which together elicit high levels of poverty. An identified strategy for uplifting these areas was (and still is) entrepreneurship, notably small businesses. These small businesses however, generally have very short and mostly unsuccessful lives. As a result the government at all levels (national, provincial and local) has endeavoured to provide support to these businesses. Some of this support is provided through mediums, such as the Internet (here named &quot / electronic support&quot / ) to assist these small businesses. This support, which comes from government, is however, not being fully utilised by the intended beneficiaries. Thus, the small businesses are not benefiting from the support provided. Consequently, many are still experiencing a short and unsuccessful existence. This research thus analyses the small businesses in areas of the greater Cape Town, which are characterised by high levels of poverty and unemployment. <font size="3">Previous studies in these areas have reported the lack of ICT related skills, also known as electronic skills (e-skills), as one of the reasons for the low uptake of electronic support (e-support). This e-support is provided by various levels of government through selected agencies (service providers). In essence, this study is aimed at investigating the influence of e-skills in the access and use of the provided e-support by owners of small businesses. Considering that the lack of adequate e-skills has been identified as influencing the use of e-support, the study also aims to identify the e-skills needed to fully utilise the provided e-support. The approach to this investigation included a review of pertinent literature and devising a conceptual model. This model was then tested in the empirical setting of this study. This setting included: (i) Providers of e-support (various specialised government agencies) and (ii) the intended beneficiaries of this e-support, i.e. small businesses in the previously disadvantaged areas (PDAs) of the greater Cape Town. Through the use of case study methodology and face to face interviews, it was found that many small business owners were not able to appropriately use the provided e-support. This was due to their lack of e-skills, which resulted in their inability to use ICT. Additionally, some were unaware of the existence of the e-support or the service providers. During the review of pertinent literature done as part of the study, an e-skills framework was designed. The framework identified the e-skills considered necessary in order for small business owners to effectively utilise the provided e-support and other technologies. The e-skills framework suggested by this study could be used as a tool to assist: (i) The providers of e-support to understand the usage of their services and enable (ii) a more informed understanding of the need for appropriate e-skills among small business owners, in relation to their use of the provided e-support. Additionally, (iii) small business owners should be in a better position to recognise the benefits of using technology, especially the Internet. <font size="3">The contribution of this study is seen as twofold. Firstly, it should assist the providers and users of e-support. This is done by addressing the practical side of the provision and usage of these services. Secondly, the study contributes an informative e-skills framework related to the effective use of e-support. This study also furthers academic knowledge in the area of the investigation, and suggests further directions for research. Considering, the limited small business sample (only participants from three PDAs), the generalisation of this study is limited. This limitation does not however, influence the validity of this research, or the credibility of the findings. </font></font></font></i></p>
15

Understanding the role of e-skills in the utilisation of electronic small business development support services

Katunga, Natasha January 2013 (has links)
Magister Commercii - MCom / The Internet is now facilitating the provision of an increasing number of services. Thus, technology has become a more integrated part of people‟s daily routine. Some of these technologies include electronic communication, online banking, and shopping as well as electronic learning - to name but a few. However, for various reasons, such as limited formal education (which is a key promoter of reading and writing skills), access and skills, not everyone has an equal opportunity to benefit from the use of these technologies. The unequal distribution of opportunities of such nature is often broadly referred to as the digital divide. That is the gap between those who have access to Information and Communication Technology (ICT) and those who do not. One noted challenge that influences the use of ICT consists of socioeconomic conditions, which together elicit high levels of poverty. An identified strategy for uplifting these areas was (and still is) entrepreneurship, notably small businesses. These small businesses however, generally have very short and mostly unsuccessful lives. As a result the government at all levels (national, provincial and local) has endeavoured to provide support to these businesses. Some of this support is provided through mediums, such as the Internet (here named “electronic support”) to assist these small businesses. This support, which comes from government, is however, not being fully utilised by the intended beneficiaries. Thus, the small businesses are not benefiting from the support provided. Consequently, many are still experiencing a short and unsuccessful existence. This research thus analyses the small businesses in areas of the greater Cape Town, which are characterised by high levels of poverty and unemployment. Previous studies in these areas have reported the lack of ICT related skills, also known as electronic skills (e-skills), as one of the reasons for the low uptake of electronic support (e-support). This e-support is provided by various levels of government through selected agencies (service providers). In essence, this study is aimed at investigating the influence of e-skills in the access and use of the provided e-support by owners of small businesses. Considering that the lack of adequate e-skills has been identified as influencing the use of e-support, the study also aims to identify the e-skills needed to fully utilise the provided e-support. The approach to this investigation included a review of pertinent literature and devising a conceptual model. This model was then tested in the empirical setting of this study. This setting included: (i) Providers of e-support (various specialised government agencies) and (ii) the intended beneficiaries of this esupport, i.e. small businesses in the previously disadvantaged areas (PDAs) of the greater Cape Town. Through the use of case study methodology and face to face interviews, it was found that many small business owners were not able to appropriately use the provided e-support. This was due to their lack of e-skills, which resulted in their inability to use ICT. Additionally, some were unaware of the existence of the e-support or the service providers. During the review of pertinent literature done as part of the study, an e-skills framework was designed. The framework identified the e-skills considered necessary in order for small business owners to effectively utilise the provided e-support and other technologies. The e-skills framework suggested by this study could be used as a tool to assist: (i) The providers of e-support to understand the usage of their services and enable (ii) a more informed understanding of the need for appropriate e-skills among small business owners, in relation to their use of the provided e-support. Additionally, (iii) small business owners should be in a better position to recognise the benefits of using technology, especially the Internet. The contribution of this study is seen as twofold. Firstly, it should assist the providers and users of e-support. This is done by addressing the practical side of the provision and usage of these services. Secondly, the study contributes an informative e-skills framework related to the effective use of esupport. This study also furthers academic knowledge in the area of the investigation, and suggests further directions for research. Considering, the limited small business sample (only participants from three PDAs), the generalisation of this study is limited. This limitation does not however, influence the validity of this research, or the credibility of the findings.

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