There is an urgent need for Bangladesh to identify the arsenic (As) contaminated tubewells (TWs) in order to assess the health risks and initiate appropriate mitigation measures. This involves testing water in millions of TWs and raising community awareness about the health problems related to chronic As exposure from drinking water, and providing alternative safe water option for the exposed population of the country. The use of spatial maps in a participatory context emerged as an important tool for an effective and rational distribution of alternative safe water options for the exposed population of the country. Field test kit offers the only practical tool available to screen all the TW water considering the time frame and financial resources of the country. A comparison of the field test kit results and laboratory measurements by atomic absorption spectrometry (AAS) as “gold standard” for As in water of 12,532 TWs in Matlab upazila (sub-district) in Bangladesh, indicates that the field test kit correctly determined the status of 87% of the As levels compared to the Bangladesh Drinking Water Standard (BDWS) of 50 μg/L, and 91% of the World Health Organization (WHO) drinking water guideline value of 10 μg/L. In order to identify the sustainable alternative safe water options, different type of safe water options were distributed in Sonargaon and Jhikargachha upazilas (sub-district) in 2001 and later revisited the options in 2004 to identify the sustainable ones. It was observed that community acceptability of the distributed options was not encouraging; less than 2% of the provided options were found to be in use. However, two new approaches emerged from people’s initiatives, which were making rapid and positive contributions to safe water coverage: switching to the existing As-safe TWs and reinstalling TWs at 50-100 m depths by looking at particular type of sediment colours. A study was conducted in Matlab upazila to validate the concept of installation/reinstallation of TWs at certain depths, a new concept promoted by local drillers (masons). The study revealed that locally a thick layer of black to grey sediments overlies an oxidized unit of yellowish-grey to reddish-brown sediments. The correlation between the colour of both units and the groundwater redox conditions was investigated to provide an easy tool for targeting low-arsenic groundwater. The water abstracted from black sediments contained high amount of As concentration but the concentration decreased towards the yeallowish to red sediments. Three boreholes verified the driller's perception of the subsurface lithologic conditions. Discrepancies between the driller's and the research team description of the sediment colours were insignificant. This study shows that sediment colour is a reliable indicator of high and low As-concentrations in TW water and can be used by local drillers to install TW. Lack of financial resources and identification of an appropriate distribution tools are some of the major obstacles to provide sustainable solution to the exposed population of the country. Spatial mapping exercise along with community participation can help maximize the safe water coverage of different alternative safe water options by reducing financial involvement. Combining people’s voice with that of spatial information gave better results and the method is already been proved useful in targeting non-served areas. Participatory Rural Appraisal (PRA) methods along with geographical information system (GIS) used in the study to obtain relevant information. Participants from different focus groups were asked to determine their ‘own priorities’ for spatial planning of alternative arsenic-safe water options. The study discusses community perspectives on demand-based safe water options and reveals the suitability of using participatory geographic information system (PGIS) technique to target non-served areas for rational distribution of safe water options. / QC 20100716

The objective for this program of research was to retrospectively, narratively, and autobiographically examine how my professional identity shifted when I moved from the secret, safe space of my own classrooms to shared spaces with other teachers as a newly appointed Differentiated Instruction Facilitator. In education today, teachers increasingly share their classroom spaces with other professionals and often the shifts in identity of the people sharing spaces are not examined. In this inquiry, I examine my own identity by viewing the metaphorical dance floor of the Differentiated Instruction Project from both my position on the dance floor and from the balcony above. I inquire into the nature of my dancing relationships with many partners over two years on my middle and secondary school landscape and how these relationships changed how I understood myself as a teacher and as a facilitator. I look at the differentiated philosophy I was expected to deliver and the knowledge my colleagues brought into our time together and how these two knowledge realms interacted and shifted my own knowledge and, in turn, my relationships with my teacher partners and their students.<p> My professional identity within the Differentiated Instruction Project shifted often. In the beginning, I attempted to integrate voices of the conduit and their system and sacred stories with my own personal practical knowledge. In this inquiry, I explore the relationship between the conduit and my work inside classroom spaces. I inquire into the effect of stories on my own personal practical knowledge and the knowledge of my colleagues and their students. I examine the ways in which many dancers were positioned on my educational dance floor and the ways in which these voices shaped the voice of my identity. Finally, I imagine possibilities for living and reliving and then telling and retelling stories of shifting identities within shared spaces.

<p>The Table Mountain Group (TMG) Formation is the lowest member of the Cape Supergroup which consists of sediments deposited from early Ordovician to early Carboniferous times, approximately between 500 and 340 million years ago. The Table Mountain Group (TMG) aquifer system is&nbsp / exposed along the west and south coasts of South Africa. It is a regional fractured rock aquifer that has become a major source of bulk water supply to&nbsp / meet the agricultural and urban water requirements of the Western and Eastern Cape Provinces of South Africa. The TMG aquifer system comprises of an approximately 4000 m thick sequence of quartz arenite and minor shale layers deposited in a shallow, but extensive, predominantly eastwest striking&nbsp / asin, changing to a northwest orientation at the west coast. The medium to coarse grain size and relative purity of some of the quartz arenites,&nbsp / together with their well indurated nature and fracturing due to folding and faulting in the fold belt, enhance both the quality of the groundwater and its&nbsp / exploitation potential for agricultural and domestic water supply purposes and its hot springs for recreation. The region is also home to some unique&nbsp / and indigenous floral species (fynbos) of worldwide importance. These and other groundwater dependent vegetation are found on the series of&nbsp / mountains, mountain slopes and valleys in the Cape Peninsula. The hydrogeology of the TMG consists of intermontane and coastal domains which&nbsp / have different properties but are interconnected. The former is characterized by direct recharge from rain and snow melt, deep groundwater circulation with hot springs and low conductivity groundwater. The coastal domain is characterized by shallow groundwater occurrence usually with moderate to&nbsp / poor quality, indirect recharge from rainfall of shallow circulation and where springs occur they are usually cold. The sustainable utilization of the TMG&nbsp / aquifer addressed the issues of the groundwater flow dynamics, recharge and discharge to and from the aquifer / challenges of climate change and climate variability and their potential impact on the aquifer system. The concept of safe yield, recharge and the capture principle and the integration of&nbsp / sustainable yield provided the basis for sustainable utilization with the adaptive management approach. Methodology used included the evaluation of&nbsp / recharge methods and estimates in the TMG aquifer and a GIS based water balance recharge estimation. The evaluation of natural discharges and&nbsp / artificial abstractions from the TMG aquifer system as well as its potential for future development. The Mann-Kendal trend analysis was used to test historical and present records of temperature and rainfall for significant trends as indication for climate variability and change. The determination of&nbsp / variability index of rainfall and standard precipitation index were additional analyses to investigate variability. The use of a case study from the Klein&nbsp / (Little) Karoo Rural Water Supply Scheme (KKRWSS) within the TMG study area was a test case to assess the sustainable utilization of TMG aquifers.&nbsp / Results show that recharge varies in time and space between 1% and 55% of MAP as a result of different hydrostratigraphic units of the TMG based on&nbsp / geology, hydrology, climate, soil, vegetation and landuse patterns however, the average recharge is from 1% to 5% of MAP. The TMG receives recharge&nbsp / mainly through its 37,000 km2 of outcrop largely exposed on mountainous terrain. Natural discharges from the TMG include 11 thermal and numerous&nbsp / cold spring discharges, baseflow to streams and reservoirs, and seepage to the ocean. Results from this study also show increasing temperature&nbsp / trend over the years while rainfall trend generally&nbsp / remain unchanged in the study area. Rainfall variability persists hence the potential for floodsand droughts in the region remain. Global and Regional Models predict about 10% to 25% reduction in rainfall and increase in variability in future. Impacts of&nbsp / his change in climate will affect the different types of aquifers in various ways. Increase in temperature and reduction in rainfall will increase&nbsp / evapotranspiration, reduce surface flows and eventually reduce shallow aquifer resources. Coastal aquifers risk upsurge in salinisation from sea level&nbsp / rise and increase in abstractions from dwindling surface water resources. While floods increase the risk of contamination to shallow aquifers droughts&nbsp / put pressure on all aquifers especially deep aquifers which are considered to be more reliable due to the fact that they are far removed from surface conditions. Future population growth and increase in freshwater demand will put more pressure on groundwater. Recharge to groundwater have been&nbsp / over-estimated in certain areas in the past leading to high abstraction rates from boreholes causing extensive groundwater storage depletion evident by high decline in groundwater levels in these areas and hampering sustainable management of the aquifer resources. Over-abstraction have resulted in&nbsp / loss of stream flow and baseflow reduction to streams during summer, complete loss of springs and reduction of flow to others. Flow to wetlands,&nbsp / riparian vegetation, and sometimes loss and shifts in dependent ecosystems have also resulted from over-abstraction. Sustainability has spatial and&nbsp / temporal implications due to changing climate and demand. The study recommends adaptive management practices in which several factors are&nbsp / considered in managing groundwater together with surface water resources in order to maintain ecological and environmental integrity. The KKRWSS&nbsp / and other groundwater supply schemes in the Western and Eastern Cape Provinces demonstrate the huge potential of the TMG to provide freshwatersupply for domestic and irrigation water needs however, the huge decline in groundwater levels due to over-abstraction in the KKRWSS and&nbsp / other groundwater schemes underscores the need for sustainable utilization of the TMG groundwater resources for present and future generations with&nbsp / minimal impacts on the quality, dependent hydrological and ecosystems as well as the environment.</p>

The objective for this program of research was to retrospectively, narratively, and autobiographically examine how my professional identity shifted when I moved from the secret, safe space of my own classrooms to shared spaces with other teachers as a newly appointed Differentiated Instruction Facilitator. In education today, teachers increasingly share their classroom spaces with other professionals and often the shifts in identity of the people sharing spaces are not examined. In this inquiry, I examine my own identity by viewing the metaphorical dance floor of the Differentiated Instruction Project from both my position on the dance floor and from the balcony above. I inquire into the nature of my dancing relationships with many partners over two years on my middle and secondary school landscape and how these relationships changed how I understood myself as a teacher and as a facilitator. I look at the differentiated philosophy I was expected to deliver and the knowledge my colleagues brought into our time together and how these two knowledge realms interacted and shifted my own knowledge and, in turn, my relationships with my teacher partners and their students.<p> My professional identity within the Differentiated Instruction Project shifted often. In the beginning, I attempted to integrate voices of the conduit and their system and sacred stories with my own personal practical knowledge. In this inquiry, I explore the relationship between the conduit and my work inside classroom spaces. I inquire into the effect of stories on my own personal practical knowledge and the knowledge of my colleagues and their students. I examine the ways in which many dancers were positioned on my educational dance floor and the ways in which these voices shaped the voice of my identity. Finally, I imagine possibilities for living and reliving and then telling and retelling stories of shifting identities within shared spaces.

The second-hand vehicle market in Europe, America, and Japan has entered the mature period and showed the following market characteristic: 1.Large business volume and has formed effect of scale Volume of the second-hand vehicle business in developed countries is lot more than the volume of the new vehicle. Generally it is above a time. According to the summary statistics, the annual sales volume of American second-hand vehicle is already 2.5 times of its new vehicle sales volume, and the year sales volume of Japanese second-hand vehicle has continuously surpassed its new vehicle the sales volume for many years. Just because of huge second-hand vehicle market, the developed countries can maintain a stable and huge market of new vehicle market. The related data demonstrated that, in a mature auto market, the average of vehicle discard cycle is about 8 - 12 years, but the average of vehicle renew cycle is less than 4 years. It is obvious that the second-hand vehicle market has quite a few of the spaces to operate. 2.Lower price and balance the supply and demand quantity in the market The 21st century has become "the automobile society". Cars have become an essential transportation for the modern families, but consumers from different levels have different demands for cars. Part of the consumers, which from middle class and above mainly buy new cars. They pay more attention to the reliability of the vehicles instead of the price. Most of them would consider changing cars after four or five years when the reliability of the vehicle go down and the chance of accidental breakdown increase. But consumers, which are below the middle class, then take the second-hand car as the main consideration. It is because of the lower price consideration. The price of second-hand car is about half of a new car. It's still quite reliable to be used for two to four years. And the loss of depreciation value would be smaller than buying a new car. Such second-hand car is still possible to be sold once more after using. The price then would be only 20%-30% of a new one. Those cars are mainly sold to the people who have lower income or students who have no income. Moreover there are some older cars that even cost less, which costs only about 5%-10% of a new car. Although it is a must to spend certain money on maintenance costs, the total cost would still be the lowest. It is quite beneficial. Therefore the supply of second-hand vehicle is a little bit larger than the demand quantity. The price of the second-hand cars is also lower. That is to balance the supply and demand quantity in the market 3.The system organize well and promote the market to be developed Second-hand vehicle markets in the developed countries generally form a perfect purchasing and selling system. And that promotes the organization of second-hand auction and wholesale. Governments formulate related laws of second-hand vehicle trading to protect consumer's rights and interests. Each organization runs fairly and effective and that makes the price in second-hand vehicle markets of the developed countries tend to be stable. Consumers do not have to worry about the loss which is from the unstable value of vehicles. The value of second-hand vehicles affects the guarantee value of vehicles and the stimulation of buying new cars deep and far. The steady of second-hand vehicle markets has made new- and second-hand vehicle markets promote fairly well. The generality of second-hand vehicle markets in developing countries are: 1. Less source and higher price Because of the average income of the developing countries is lot more lower than the developed countries, the proportion of wanting to buy second-hand cars is lot more than the developed countries. Furthermore, vehicle renew cycle of these countries is longer than the developed countries. Therefore make the source of second-hand vehicle to be limited. And the situation of supply is unable to meet the demand is very common. It has made the price of second-hand vehicle become lot higher than the developed countries. Even though, the price of second-hand cars is still lower than new cars. Considering from the economy, second-hand cars are still popular. 2. The trading is flexible and the management is tend to be ruled day by day The main characteristic of the second-hand vehicle markets in developing countries is flexible trading. There are direct personal trading, store trading, and also auction trading. Anyhow they regulate and run by the market rules themselves. Although the second-hand vehicles markets have go along for many years, it is still immature. There is still a certain difference in scale, price, market standard, and market operation from developed countries. These countries have already realized this and are now trying to improve. They are endeavoring to regulate the law and the policy and also coordinating with the new- and second-hand markets. They are trying to regulate the price and balance the supply and demanding. These have made their trading way become closer to the developed countries. Market of Taiwan has also followed this tendency to Europe, America, and Japan. Comparing with the developed countries, the second-hand vehicle markets in Taiwan starts later but develops faster. The trading way is like the Eight Immortals crossing the sea, each one showing his special prowess. The trading pattern and the legal rules are still not soundness. The disputes happen quite often. Before the information of a new car has not fully exposed, it is risky to purchase second-hand car. Consumer could just be the last white mouse for the sellers and can only pray for himself. Making a comprehensive survey of second-hand vehicle markets in developed countries like America and Japan, the policy, the law and the coordination between the new- and second-hand vehicle markets are the main reason to make second-hand vehicle markets become prosperous in these countries. Because of the legal standard is incomplete in our country. The problem of asymmetric information exists in the market. And that makes the rights and the interests of consumers can not be protected when they purchase cars. This research is mainly investigating via interviews, related documents, and theories, and also case study and analyze. Then induces the system which can promote consumers' rights and interests and also to make consumers' rights and interests to be protected. Therefore they can feel at ease buying cars and also trying to provide proprietors a way to make reference of the system establishment.

The purpose of this study was to investigate the adequacy of the Stages of Change model in a group therapy treatment program for male batterers. The sample consisted of three groups with a total sample size of 22 participants. Data for this study were obtained by administering the Safe at Home Instrument and the Group Climate Questionnaire – Short Form. Results indicated the Safe at Home Instrument had limited clinical utility with involuntary male batterers. Independent of scoring method used, the majority of participants reached the action stage early in group treatment. Because the action stage is the highest stage attainable in this study, further growth was not measurable. The lack of variability in participants’ scores on the Safe at Home Instrument limits its clinical usefulness. Results from the Group Climate Questionnaire – Short Form indicate the groups did not progress according to a popular group development theory (MacKenzie & Livesley, 1983). The groups appear to enter the differentiation stage but do not successfully master the developmental issues needed to progress through the subsequent stages. The results from both instruments indicate that treatment groups with involuntary, male batterers did not progress as expected. Recommendations for future research and clinical practice are discussed.

Currently 884 million people worldwide are living without access to an improved source of drinking water (WHO/UNICEF, 2011). Piped-water on premises is the ultimate goal of World Health Organization (WHO) due to the ability to treat all of the water and distribute it safely in pressurized pipes. However, Household Water Treatment and Safe Storage (HWTS) is an option for improving the quality of drinking water where that infrastructure is not yet developed, especially where there is a risk of recontamination between point of collection and point of use (Clasen, 2006). This study analyzed one such HWTS, the ceramic pot water filter. The study compared the hydraulic properties of the FilterPure (FP) and Potters for Peace (PFP) ceramic pot filters through a thirteen-month field study in the Dominican Republic and laboratory studies at the University of South Florida. In the field study 55 filters were tested for first hour flow rate and hydraulic conductivity. Eight first hour flow rate tests were conducted in the field on one month intervals during months 7- 13. FP filters had an average first hour flow rate of 553 ml/hr and PFP Filters had a first hour flow rate of 395 ml/hr. No significant change in first hour flow rate was observed over time in FP filters. PFP experienced an average increase of 31 ml/hr per month during the seven-month testing period. Falling head tests were conducted on four filters in the laboratory and the flow rate was modeled to determine hydraulic conductivity. Hydraulic conductivity values for FP filters ranged from k = 0.0495 - 0.0831 cm/hr and for PFP filters ranged from k = 0.0136 - 0.0389 cm/hr. Eight out of 29 (26%) Potters for Peace filters in the field had first hour flow rates of less than 250 ml/hr by month nine of the study and had to be replaced and removed from the study. In total 24 of 55 (44%) filters (8 FP and 16 PFP) had to be removed from the study due to several reasons discussed in this thesis.

In this master thesis a small modular sodium-cooled metal-fuelled pool-type fast reactor design, called SPARC - Safe and Passive with Autonomous Reactivity control, has been designed. The long term reactivity changes in the SPARC are managed by implementation of the the Autonomous Reactivity Control (ARC) system, which is the novelty of the design. The overall design is mainly based on the Integral Fast Reactor project (IFR), which experimentally demonstrated the passive safety characteristics of a metal fuelled, sodium-cooled, pool-type reactor system. Whilst mimicking the passive safety features of the IFR, the vision of the SPARC design is a battery type reactor, which can operate with minimum interference from human actors. In this thesis, two reactor examples have been developed which operate using different fuel compositions. One reactor operates on recycled nuclear waste from today's nuclear power plants, and the other reactor operates on enriched uranium. Both reactors have a thermal power of 150 MW, and are meant to operate for 30 years without refuelling. The design was developed using the ADOPT software, and was simulated in Serpent. Using Serpent, criticality analyses were carried out which show that the ARC system is able to control the long term reactivity changes of the reactors.

An emergency reaction is required in Africa because HIVIAIDS is a reality which may be regarded as a developing crisis and a catastrophe. Approximately a third of all women in the North-West Province are HIV positive. Because of their vulnerability against HIVIAIDS there arose a need for health service provision to the HIV positive woman to focus specifically on the reduction of the transmission of HIVIAIDS from mother to child. Mother to child transmission is the biggest cause of HIV infection among children. Almost all HIV positive children are infected during pregnancy, labour, childbirth or breastfeeding. Without the necessary preventative measures as many as 25-35% of the children of HIV positive mothers may be infected. The biggest percentage of infections, however, takes place during labour and the birth process. In first world countries the mother has access to choices and facilities to make an informed decision about antiretroviral therapy, as well as the method of birth. In the North-West Province not all these options and facilities are available, and therefore the knowledge and skills of midwives must be deployed to reduce vertical transmission of HIV during the intrapartum practice. It is important that midwives have the necessary knowledge about intrapartum practices and vertical transmission of HIV, in order to distinguish between risky and safe intrapartum practices. The purpose of this research was to determine whether midwives in the Southern region of the North-West Province have sufficient knowledge of intrapartum practices to reduce vertical transmission of HIV, as well as to determine the intrapartum practices in the Southern region of the North-West Province. The ultimate goals, then, were to determine how the national policy should be adapted and implemented in the Southern region of the North-West Province to reduce HIV transmission during intrapartum practices. A quantitive survey design was used. For the data collection a questionnaire and a control list were used. The questionnaire and the control list, which are adapted and based on literature, were submitted to research and subject specialists, after which they were adapted. Permission was obtained for this research from the Department of Health in the North-West Province, the ethics committee of the PU for CHE as well as each provincial hospital in the Southern region in the North-West Province to conduct the research. A purposeful availability sample of midwives working in the Southern region of the North-West Province was used and a random sample was used for auditing the obstetric records. A total of 31 midwives participated as respondents, and 401 obstetrical records were audited. Data analysis was performed by means of a frequency analysis, effect sizes and cross reference. Based on these findings it was concluded that the midwives do have basic knowledge regarding vertical transmission of HIV, but that this knowledge is not reflected in the intrapartum practice. There is uncertainty about certain aspects where the latest research about intrapartum practices are not implemented in practice. Recommendations were accordingly formulated for nursing education, research and practice. This research particularly focused on improving midwives' knowledge about intrapartum practices to reduce the vertical transmission of HIV, so that this knowledge may result in improved intrapartum practice. Recommendations are also made as to how the national policy may be adapted and implemented in the Southern region of the North-West Province. / Thesis (M.Cur.)--North-West University, Potchefstroom Campus, 2004.

In an era of rapidly growing maritime trade, national and international efforts to prevent marine environmental disasters have taken various dimensions, including vessel safety mandates, traffic control measures and increased state inspections and control of ships. The advent of large modern tankers has generated new marine environmental risks. The customary right of access to a place of refuge for vessels in distress is becoming a complex issue of increasingly conflicting values reflecting humanitarian response and environmental conservation. A national ‘Places of Refuge’ policy is an essential component of Canada’s oceans management strategy. A cohesive and robust structure for conflict resolution will help assure the continued progress and development of ocean-based industries and minimize threats to Canada’s oceans and marine environment. The input of ship and port management personnel in the development of a national strategy and risk assessment procedure is vital for credibility and acceptance. The Canadian and international experience of ships in need of assistance and the lessons learned dictate that developing a ‘Places of Refuge’ policy and risk assessment procedure is not only prudent but imperative if Canada is to continue to be a major player in the global marketplace. This dissertation outlines a risk assessment procedure to categorize Canadian ports as places of refuge. This categorization of ports based on defined risk levels allows for the optimum allocation of resources for upgrading the refuge suitability of ports. Twenty-one ports on the east coast are evaluated for their suitability as places of refuge, based on their risk category. The measures suggested in this thesis propose elements of a Canadian national policy and risk assessment procedure for places of refuge which are comprehensive, pragmatic and flexible within the country’s existing command and control infrastructure.