Ground System Milestones: 20 Years of Earth Observing Satellite Mission Operations

Aqua, Aura, and Terra are Earth observing satellites that serve in the Earth Observing System (EOS). Terra, the flagship mission of the EOS, was launched in 1998. Aqua was launched in 2002 and Aura was launched in 2004. Each spacecraft was designed for a 6 year lifespan. Currently, each spacecraft meets all mission and science requirements. As technology advances, the onboard hardware and software remain the same, however, our ground system progresses. In the past twenty years, many changes have taken place. Our goal is to describe the life of the ground system from launch, to present day, and touch on our future plans. The focus of our presentation will be how EOS has and continues to modernize our ground system for the future. We would like to share our experiences and give insight into the operational challenges of a 20 year old ground system. Our hope is for future mission operators and those maintaining potential age defying satellites to use our past experiences and lessons learned for future operational concepts

Rethinking disaster risk management and climate change adaptation

AbstractAustralian governments face the twin challenges of dealing with extreme weather-related disasters (such as floods and bushfires) and adapting to the impacts of climate change. These challenges are connected, so any response would benefit from a more integrated approach across and between the different levels of government.This report summarises the findings of an NCCARF-funded project that addresses this problem.The project undertook a three-way comparative case study of the 2009 Victorian bushfires, the 2011 Perth Hills bushfires, and the 2011 Brisbane floods. It collected data from the official inquiry reports into each of these events, and conducted new interviews and workshops with key stakeholders. The findings of this project included recommendations that range from the conceptual to the practical. First, it was argued that a reconceptualization of terms such as ‘community’ and ‘resilience’ was necessary to allow for more tailored responses to varying circumstances. Second, it was suggested that the high level of uncertainty inherent in disaster risk management and climate change adaptation requires a more iterative approach to policymaking and planning. Third, some specific institutional reforms were proposed that included: 1) a new funding mechanism that would encourage collaboration between and across different levels of government, as well as promoting partnerships with business and the community; 2) improving community engagement through new resilience grants run by local councils; 3) embedding climate change researchers within disaster risk management agencies to promote institutional learning; and, 4) creating an inter-agency network that encourages collaboration between organisations.Please cite this report as: Howes, M, Grant-Smith, D, Reis, K, Bosomworth, K, Tangney, P, Heazle, M, McEvoy, D, Burton, P 2013 Rethinking disaster risk management and climate change adaptation, National Climate Change Adaptation Research Facility, Gold Coast, pp. 63.Australian governments face the twin challenges of dealing with extreme weather-related disasters (such as floods and bushfires) and adapting to the impacts of climate change. These challenges are connected, so any response would benefit from a more integrated approach across and between the different levels of government.This report summarises the findings of an NCCARF-funded project that addresses this problem.The project undertook a three-way comparative case study of the 2009 Victorian bushfires, the 2011 Perth Hills bushfires, and the 2011 Brisbane floods. It collected data from the official inquiry reports into each of these events, and conducted new interviews and workshops with key stakeholders. The findings of this project included recommendations that range from the conceptual to the practical. First, it was argued that a reconceptualization of terms such as ‘community’ and ‘resilience’ was necessary to allow for more tailored responses to varying circumstances. Second, it was suggested that the high level of uncertainty inherent in disaster risk management and climate change adaptation requires a more iterative approach to policymaking and planning. Third, some specific institutional reforms were proposed that included: 1) a new funding mechanism that would encourage collaboration between and across different levels of government, as well as promoting partnerships with business and the community; 2) improving community engagement through new resilience grants run by local councils; 3) embedding climate change researchers within disaster risk management agencies to promote institutional learning; and, 4) creating an inter-agency network that encourages collaboration between organisations.&nbsp

Factors Influencing Wheat Yield and Variability: Evidence from Manitoba, Canada

Production functions to explain regional wheat yields have not been studied extensively in the Canadian prairies. The objective of this study is to employ a Just-Pope production function to examine the relationship between fertilizer inputs, soil quality, biodiversity indicators, cultivars qualifying for Plant Breeders’ Rights (PBR), and climatic conditions on the mean and variance of spring wheat yields. Using regional-level wheat data from Manitoba, Canada, model results show nitrogen fertilizer, temporal diversity, and PBR wheat cultivars are associated with increased yield variance. Mean wheat yield is reduced by the proportion of land in wheat, the interaction of growing temperature and precipitation, and spatial diversity. By contrast, higher soil quality and PBR wheat cultivars increase mean yield. The wheat yield increases attributed to PBR range from 37.2 (1.4%) to 54.5 kg/ha (2.0%). Plant Breeders’ Rights may have enhanced royalties from increased certified seed sales, but the benefits in terms of higher wheat yield or lower yield variability are limited. Future research is required to understand the interactive effects of fertilization practices, genetic diversity, and environmental conditions on regional wheat yield stability.climate, fertilizer, Manitoba, Plant Breeders’ Rights, production risk, wheat, yield, Agribusiness, Crop Production/Industries, Farm Management, Land Economics/Use, Productivity Analysis, Risk and Uncertainty, O18, Q16,

\u27Taiwanization\u27 in the Strait Conflict: Public Opinion\u27s Effect on Peace vs Conflict

Since the election of Tsai Ing-wen, the Taiwan Strait Conflict has been rising in tension. Many scholars state that interdependence leads to peace; however, Taiwan and China extensively trade with one another, and peace has not occurred. To understand why the Taiwan Strait continuously suffers from conflict, one must explore mechanisms that can alter the effect of commercial interdependence on peace. In a democracy, this power would reside with the voting public. To understand why Taiwan’s trade relations have not led to peace, we must examine the Taiwanese public opinion. Most believe that peace has not come about because Taiwan does not desire unification and lacks the power to challenge China. By viewing this issue in this way, one is disregarding the legitimate influence that the people of Taiwan have on their political parties in Taiwan. Although Taiwan is a small island, the decisions of the Taiwanese government could launch the world into a massive war. Therefore, it is crucial to understand the policies of each Taiwanese president regarding mainland China. The Taiwanese people have favored maintaining the status quo in the Taiwan Strait Conflict, but recent surveys show that the public is starting to consider taking steps toward independence. Should this trend continue, China will resort to war. Therefore, one must understand how this trend formed and how it influences the political parties of Taiwan. I call this phenomenon of Taiwan’s public viewing the People’s Republic of China (PRC) as a common enemy while utilizing grass-root movements to embrace its identity and alter mainland policy – Taiwanization. Many scholars have used this term in the past, and because my terminology differs, I will denote my term with the capital ‘T.’ Taiwanization steers Taiwan away from peaceful trade and creates tension between Taiwan and China

\u27Taiwanization\u27 in the Strait Conflict: Public Opinion\u27s Effect on Peace vs Conflict

Since the election of Tsai Ing-wen, the Taiwan Strait Conflict has been rising in tension. Many scholars state that interdependence leads to peace; however, Taiwan and China extensively trade with one another, and peace has not occurred. To understand why the Taiwan Strait continuously suffers from conflict, one must explore mechanisms that can alter the effect of commercial interdependence on peace. In a democracy, this power would reside with the voting public. To understand why Taiwan’s trade relations have not led to peace, we must examine the Taiwanese public opinion. Most believe that peace has not come about because Taiwan does not desire unification and lacks the power to challenge China. By viewing this issue in this way, one is disregarding the legitimate influence that the people of Taiwan have on their political parties in Taiwan. Although Taiwan is a small island, the decisions of the Taiwanese government could launch the world into a massive war. Therefore, it is crucial to understand the policies of each Taiwanese president regarding mainland China. The Taiwanese people have favored maintaining the status quo in the Taiwan Strait Conflict, but recent surveys show that the public is starting to consider taking steps toward independence. Should this trend continue, China will resort to war. Therefore, one must understand how this trend formed and how it influences the political parties of Taiwan. I call this phenomenon of Taiwan’s public viewing the People’s Republic of China (PRC) as a common enemy while utilizing grass-root movements to embrace its identity and alter mainland policy – Taiwanization. Many scholars have used this term in the past, and because my terminology differs, I will denote my term with the capital ‘T.’ Taiwanization steers Taiwan away from peaceful trade and creates tension between Taiwan and China

Impact of varying intensities of blue-light exposure on 3T3 cells

There is the need to develop a compatible sterilisation method for hybrid biomaterials. High-intensity blue light in the 405 nm region has been shown to be an effective bacterial decontamination method [1], to cause no noticeable damage to the gross structure of type-I collagen monomer (when treated at 10 mW/cm2) [2], and to have no noticeable effect on 3T3 cell viability, growth rate, redox state or lactate dehydrogenase (LDH) leakage (at 1.0 mW/cm2) [2]. The purpose of this research was to investigate the effect of varying the blue-light intensity on the 3T3 cell response parameters

Structural relaxation and dynamic hetrogeneity in a polymer melt at attractive surfaces

Journal ArticleMolecular dynamics simulations of polymer melts at flat and structured surfaces reveal that, for the former, slow dynamics and increased dynamic heterogeneity for an adsorbed polymer is due to densification of the polymer in a surface layer, while, for the latter, the energy topography of the surface plays the dominant role in determining dynamics of interfacial polymer. The dramatic increase in structural relaxation time for polymer melts at the attractive structured surface is largely the result of dynamic heterogeneity induced by the surface and does not resemble dynamics of a bulk melt approaching Tg

Development and implementation of star tracker based attitude determination

As interest in nanosatellites grows within the university community, the demand for inexpensive, space-grade hardware grows as well. Star trackers can be a luxury item for some spacecraft and therefore are often not considered due to their cost. Ideally, a star tracker could be built using inexpensive parts so long as the software is available. Unlike many other attitude determination instruments, star trackers are renowned for their high accuracy, yielding accurate and precise attitude estimates. However, development of this software can be overwhelming for the university settling, especially when multiple missions are on hand. If these instruments were readily available for more spacecraft, university-sponsored missions could expand to higher orbits and possibly deep space applications. Keeping in mind the cost and time constraints most university missions run into, the difficulty of developing an inexpensive star tracker stems from the integrated software. Hardware can be commercial off-the-shelf products, but the software is the more expensive of the two, and it is this software that is often lacking at the university level. With this, the proposed algorithm shows promise for the development, implementation, and testing of free star tracker software. The presented algorithm allows for a variety of interchangeable hardware, making it ideal for the academic community --Abstract, page iii

More beef from the Kimberleys

Beef production in the Kimberleys is an industry which has eked out a precarious existence for many years. Today it is offered an unprecedented opportunity for expansion on sound economic lines, and it is the purpose of this article to offer some suggestions as to how this may best be achieved. [Part 1 of ongoing series of articles