Merging from on-ramps to mainline traffic is one of the most challenging driving maneuvers on freeways. The challenges are further heightened for older drivers, as they are known to have longer perception-reaction times, larger acceptance gaps, and slower acceleration rates. In this research, VISSIM, a microscopic traffic simulation software, was used to evaluate the influence of the aging drivers on the operations of a typical diamond interchange. First, drivers were recorded on video cameras as they negotiated joining the mainline traffic from an on-ramp acceleration lane at two sites along I-75 in Southwest Florida. Several measures of effectiveness were collected including speeds, gaps, and location of entry to the mainline lanes. This information was used as either model input or for verification purposes. Two VISSIM models were developed for each site – one for the existing conditions and verification, and another for a sensitivity analysis, varying the percentage of older drivers and Level of Service (from A to E), to determine their influence on ramp operational characteristics. According to the results, there was a significant difference in driving behavior between older, middle-aged, and younger drivers, based on the measures of effectiveness analyzed in this study. Additionally, as the level of service and percentage of older adult motorists increased, longer queues were observed with slower speeds on the acceleration lanes and the right-most travel lane of the mainline traffic.

This study was conducted to look into state-owned ICT institutions. The emphasis was on devising a strategic management framework that would be robust and agile, thereby enabling government companies within the ICT sector to rapidly respond to changes in the market and to also enable them to forecast and plan for the future in respect of technology. The main objective of the study was to derive an ICT strategic management framework for the rapid technological evolution of state-owned companies. Further, the study aimed to provide a critical exposition of the factors that affect company ICT strategies; assess the impact of technological changes on company ICT strategies; and propose guidelines on keeping companies‘ ICT strategies responsive to rapid technological changes. Through the literature review as well as an empirical study, common variables and factors that affect a company‘s ICT strategy and its response to technology changes were explored and guidelines were compiled into a framework that will assist SOEs (state-owned enterprises). Through a literature study of available material on the world‘s telecommunication trends and developments in developed nations, some key observations were recorded such as the concept of convergence, which in the main is driven by consumers‘ need for mobility and flexibility, as well as applications with high capacity demands on the one hand and the need for companies and telecommunications operators to be more efficient on the other. Convergence delivers this benefit of efficiency within the market and stimulates competition. Innovation and creativity continue to be the driving force behind the technological evolutions in the ICT sector. The study also considered how both the PEST model and Porter‘s five forces affect these companies. Issues such as the legislative and policy framework of the ICT industry in South Africa were looked at, with emphasis on how they affect ICT parastatals. The study ended with key recommendations and guidelines summed up into a comprehensive framework. / MBA, North-West University, Potchefstroom Campus, 2015

This study was conducted to look into state-owned ICT institutions. The emphasis was on devising a strategic management framework that would be robust and agile, thereby enabling government companies within the ICT sector to rapidly respond to changes in the market and to also enable them to forecast and plan for the future in respect of technology. The main objective of the study was to derive an ICT strategic management framework for the rapid technological evolution of state-owned companies. Further, the study aimed to provide a critical exposition of the factors that affect company ICT strategies; assess the impact of technological changes on company ICT strategies; and propose guidelines on keeping companies‘ ICT strategies responsive to rapid technological changes. Through the literature review as well as an empirical study, common variables and factors that affect a company‘s ICT strategy and its response to technology changes were explored and guidelines were compiled into a framework that will assist SOEs (state-owned enterprises). Through a literature study of available material on the world‘s telecommunication trends and developments in developed nations, some key observations were recorded such as the concept of convergence, which in the main is driven by consumers‘ need for mobility and flexibility, as well as applications with high capacity demands on the one hand and the need for companies and telecommunications operators to be more efficient on the other. Convergence delivers this benefit of efficiency within the market and stimulates competition. Innovation and creativity continue to be the driving force behind the technological evolutions in the ICT sector. The study also considered how both the PEST model and Porter‘s five forces affect these companies. Issues such as the legislative and policy framework of the ICT industry in South Africa were looked at, with emphasis on how they affect ICT parastatals. The study ended with key recommendations and guidelines summed up into a comprehensive framework. / MBA, North-West University, Potchefstroom Campus, 2015

Master of Science / Department of Civil Engineering / Sunanda Dissanayake / The older population (>65 years) numbered 36.8 million in the United States in 2005. By 2030, the number is estimated to be 71.5 million, almost twice as many. An increase in the older population means an increase in older drivers as well. As a result of the natural aging process, the possibility of older drivers being involved in crashes and sustaining severe injuries increases, according to past findings. The objective of this study was to identify characteristics of older drivers involved in crashes in Kansas as well as associated safety issues, which can be used to suggest potential countermeasures for improving safety. A detailed characteristic analysis was carried out for older, middle-aged, and younger drivers involved in crashes, using crash data obtained from the Kansas Department of Transportation, and comparisons were made among the groups. However, the characteristic analysis had no basis with regard to injury severity and hence, univariate statistical analysis was carried out to highlight these severities. In addition, a survey was conducted focusing on identifying older-driver behaviors, potential problems, and level of exposure to various conditions. From the severity analysis, it was found that injury severity of older drivers in crashes occurring on rural roads was significantly higher compared to those on urban roads. Therefore, a detailed analysis was carried out using the decomposition method and ordered probit modeling to identify contributing factors leading to the situation. According to the findings, the number of older male drivers involved in crashes was higher compared to older female drivers, even though older driver licensees’ data indicate the opposite. Most of the older-driver-involved crashes occurred under good environmental conditions and at intersections. A majority of older drivers had difficulties associated with left- turn maneuvering and preferred to avoid high-traffic roads and other demanding conditions. Exposure to inclement weather conditions and difficulties associated with merging, diverging, and identifying speeds and distance of oncoming traffic have lead to higher crash propensity. In rural areas, driving in the wrong direction, failing to comply with traffic signs and signals, and speeding were identified as frequent contributing factors in high severe crashes.

Thesis (MSc)--Stellenbosch University, 2000. / ENGLISH ABSTRACT: Users are not supposed to modify an operating system kernel, but it is often necessary to add a device driver for a new peripheral device. Device driver development is a difficult and time-consuming process that must be performed by an expert. Drivers are difficult to debug and a malfunctioning driver could cause the operating system to crash. Ways are therefore needed to make the development of device drivers safer and easier. A number of different device driver development methods are examined in this thesis. An existing micro-kernel that supports in-kernel device drivers as well as extensible device drivers has been modified to support user-level and loadable drivers. These extensions ensured that all the development methods were implemented in the same environment and a comparison could thus be made on a fair basis. A comparison of the different methods with respect to the efficiency of the resulting device driver, as well as the ease of the development process, is presented. / AFRIKAANSE OPSOMMING: Gebruikers is nie veronderstelom aan 'n bedryfstelsel te verander nie, maar tog is dit gereeld nodig om 'n toesteldrywer vir 'n nuwe randapparaat by te voeg. Die ontwikkeling van 'n toesteldrywer is 'n tydrowende en moeilike proses en moet deur 'n kundige aangepak word. Toesteldrywers is moeilik om te ontfout en kan deur verkeerde werking die hele stelsel tot stilstand bring. Daar is dus tegnieke nodig om die ontwikkeling van toestelhanteerders makliker en veiliger te maak. 'n Aantal verskillende ontwikkelingsmetodes vir toesteldrywers word in hierdie tesis ondersoek. 'n Bestaande mikro-kern wat in-kern, sowel as uitbreibare toesteldrywers ondersteun, is aangepas om gebruikersvlak en laaibare toestelhanteerders te ondersteun. Hierdie uitbreiding het verseker dat al die ontwikkelingsmetodes in dieselfde omgewing geïmplementeer is. Dit was dus moontlik om die metodes op 'n regverdige grondslag te vergelyk. Die vergelyking is gedoen ten opsigte van die effektiwiteit van die resulterende toesteldrywer sowel as die moeilikheidsgraad van die ontwikkelingsproses.

International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California / This paper illustrates a device driver implementation used to support a PC compatible telemetry device. Device requirements included operation on Windows NT 4.0, Windows 95, Windows NT 5.0 and Windows 98 platforms. A single device driver was not possible due to the differences between driver requirements on the various operating systems. The Windows Driver Model (WDM) was considered for NT 5.0 and Win98, however, NT 4.0 and Win95 does not support the WDM. To minimize software development and support efforts, it was clear that an architecture compatible to both WDM, NT 4.0 and Windows 95 needed to be developed. The resulting layered device driver architecture provides a common upper interface and uses a register based model to describe the hardware at the lower interface. The common upper interface is compatible with all of the target operating systems and presents a consistent Applications Programming Interface (API) for the telemetry application developer. The lower interface is specific for each platform but contains minimal device specific functionality. A simple register I/O driver is easily implemented using all of the target operating systems. The layered architecture and register based interface to the hardware results in a multiple operating system code set which differs only at the lowest layer.

Working to increase seatbelt usage among teenagers in rural settings: The Drive Alive Program (Under the direction of Dr. Monica Swahn) Background: Motor vehicle crashes are a leading cause of death in the United States. Teens are less likely to wear seatbelts than other age groups and more likely to be involved in a crash. The Drive Alive program was designed to improve seatbelt usage among teens. Purpose: This analysis aims to evaluate seatbelt use among teen drivers in a rural setting. Specifically, are there differences between males and females in terms of seatbelt use? Are drivers more likely to wear their seatbelts than passengers? Methods: Data was gathered from observational surveys (N= 3,743). Surveys were gathered by trained observers in South Georgia from 2010-2011. Records were analyzed in SPSS using three categories: occupant, sex, and belt use. The null hypotheses for this study are: 1) there is no significant difference between male and female drivers or passengers in seatbelt usage; and, 2) there is no significant difference between driver and passenger seatbelt usage. Results: Descriptive analyses were computed to determine average seatbelt use across all occupants. Chi Square for Independence tests were computed to determine differences between drivers and passengers and males and females. Females were significantly more likely than males to wear their seatbelt (Females, 70%; Males, 59%). There were no significant differences in seatbelt use for drivers and their passengers. Conclusions: Results for females being more likely to wear seatbelts is consistent with the literature. Future research might include comparison between schools with different versions of the program. Programs to increase seatbelt usage among teens should include parents, education, enforcement, teen-led activities, and partnership with educators and community organizations. Save the lives of young drivers by modeling seatbelt wearing, appropriately implementing comprehensive seatbelt use improvement programs, and enforcing the law. These simple measures will improve seatbelt use and reduce roadway fatalities.

The Maasailand of Kenya and Tanzania supports one of the richest wildlife populations remaining on Earth. However, over the last century, Maasailand has experienced land transformation notably through conversion of former rangelands to croplands. With the anticipated human population increase in East Africa, more impacts should be envisaged on these rangelands. This thesis investigates the root causes and underlying drivers of land-use change in the Maasai-Steppe ecosystems, stemming from historical, socio-cultural, political as well as the biophysical conditions. To analyse the different drivers of change, an integrated methodological approach was employed. This included a collation of historical data and information derived from both gray and published literature, analysis of remote sensing and Geographical Information Systems (GIS) data, field surveys, workshops, observations, as well as personal communications. Observed land-use change from savannah rangelands to expansive croplands are mainly linked to government policies, land tenure, human population growth (which is also likely to be the largest future driver) and climatic conditions. Consequently these changes have impacted the agro-pastoralist community, whose main incomes for their livelihoods depend on pastoralism. Subsequent loss of formerly communal grazing lands to establish protected areas; large-scale farming and/or private ranches have aggravated the problems of sedentarization due to villagization and privatization policies of the formally mobile agro-pastoral communities. Land-use change also had negative impacts on migratory wildlife species, particularly those utilizing both protected areas and dispersal ranges in communal and/or private lands. The impacts ranged from loss of their migratory routes and corridors to massive declines of populations due to the loss of access to grazing resources. The study recommends government’s interventions for keeping the land open for access to grazing resources as well as opening up wildlife corridors, where it is deemed necessary for national interests.

Thesis (M.A. (Organisational Psychology))--University of the Witwatersrand, Faculty of Humanities, School of Human and Community Development / Abstract The following research report aimed to determine how the South African print media socially constructs minibus taxi drivers. In order to achieve this aim, a media survey of South African newspaper articles reporting on minibus taxi drivers in the year 2014 was conducted. The collected articles revealed the print media’s social constructions of minibus taxi drivers. The media is a very powerful entity which has the ability to create and shift the perceptions of those who read their reports. It is through this ability, that the media portray the current social relations existing in post-Apartheid South Africa. The researcher was able to determine these different social constructions through the use of a Critical Discourse Analysis (CDA) methodology. This methodology allowed the reader to look beyond the words the journalists used, and rather to focus on the implications of these words as well as what had not been explicitly mentioned. This research found that the minibus taxi driver was socially constructed using three discourses: ‘The Bad Citizen’, ‘The Victim’ and ‘The Good Citizen’. This research provides the platform for future research into the perceptions of the minibus taxi and the minibus taxi industry. Understanding these perceptions is vital in transforming the transportation industry of South Africa. Key words: Minibus taxi drivers; Minibus taxi industry; Social constructions, South African print media; Newspaper articles, 2014. / GR2016

The manner in which clothing is designed, produced and used is responsible for major negative impacts on the environment as well as major ethical and social issues on a global scale. The increased concern for sustainability issues in the industry is similarly argued to have led to transformations of the business context of apparel companies, that have been shown to increasingly incorporate sustainability in their corporate strategies. This thesis focuses on sustainability strategies of Swedish clothing brands operating in the global apparel and fashion industry, with the aim to explore the topic of sustainability in relation to the Swedish apparel industry. Through qualitative interviews with sustainability managers and consultants working within the industry, it explores the drivers for working with sustainability as well as main challenges for achieving sustainability within the apparel industry. The results show that the concept of sustainability is indeed highly complex and broad in regard to the design, production and use of clothes. Companies are influenced by many factors that drive change towards sustainability. The future of the apparel sector is believed to be increasingly affected by new ideas to produce and indeed also consume clothes that challenge the dominating linear system. In conclusion, the industry faces many challenges concerning sustainability, but the proactive approaches by apparel companies seem to create new opportunities for change. Also, the anticipated further increase in interest for sustainability in society and subsequently among consumers and other actors may stimulate further advancements of the strategic responses among apparel companies.