Infrastructure and technology constraints to agricultural development in the humid and subhumid tropics of Africa:

Green Revolution technologies have not been widely adopted in Africa. What are the chances that they will play a major role in the near future? This paper shows that the enabling infrastructure, especially rural roads and irrigation systems are not likely to be in place in the humid and sub-humid tropics of Africa in the next 20-30 years. Consequently a typology of the more appropriate set of technology that is input and infrastructure efficient, has high returns to seasonal labor and is sustainable is presented. Research institutions should be geared up now to produce them for use in 10-20 years.Green Revolution Africa., Infrastructure (Economics), Rural development Africa., Technological innovations., Irrigation., Africa.,

Meeting NSW electricity needs in a carbon constrained world: lowering costs and emissions with distributed energy

Communities in developed nations expect their governments to ensure the reliable supply of electricity. Reflecting these expectations, the NSW Government established an Inquiry into Electricity Supply in NSW in 2007, chaired by Professor Anthony Owen (the Owen Inquiry). This Inquiry was asked in particular to review the need and timing for new baseload supply. The Owen Inquiry concluded that there was a potential shortfall in baseload supply from 2013/14, and recommended that planning for new power stations should commence immediately as the lead time for a coal-fired power station could be 67 years. Since the Owen Inquiry, the projections for both electricity consumption and electricity generation have been modified significantly (Transgrid 2008), such that the findings of the Inquiry warrant substantial reconsideration. It is beyond the scope of this report to review the merits of the privatisation plan proposed by the Owen Inquiry. However, it may well prove fortuitous for NSW that the Owen Inquirys recommendations were not adopted, as this means there is an opportunity to reconsider the options for securing the states electricity future

Bone balance within a cortical BMU: Local controls of bone resorption and formation

Maintaining bone volume during bone turnover by a BMU is known as bone balance. Balance is required to maintain structural integrity of the bone and is often dysregulated in disease. Consequently, understanding how a BMU controls bone balance is of considerable interest. This paper develops a methodology for identifying potential balance controls within a single cortical BMU. The theoretical framework developed offers the possibility of a directed search for biological processes compatible with the constraints of balance control. We first derive general control constraint equations and then introduce constitutive equations to identify potential control processes that link key variables that describe the state of the BMU. The paper describes specific local bone volume balance controls that may be associated with bone resorption and bone formation. Because bone resorption and formation both involve averaging over time, short-term fluctuations in the environment are removed, leaving the control systems to manage deviations in longer-term trends back towards their desired values. The length of time for averaging is much greater for bone formation than for bone resorption, which enables more filtering of variability in the bone formation environment. Remarkably, the duration for averaging of bone formation may also grow to control deviations in long-term trends of bone formation. Providing there is sufficient bone formation capacity by osteoblasts, this leads to an extraordinarily robust control mechanism that is independent of either osteoblast number or the cellular osteoid formation rate. A complex picture begins to emerge for the control of bone volume. Different control relationships may achieve the same objective, and the ‘integration of information’ occurring within a BMU may be interpreted as different sets of BMU control systems coming to the fore as different information is supplied to the BMU, which in turn leads to different observable BMU behaviors

Rehabilitation in chronic respiratory diseases: In-hospital and post-exacerbation pulmonary rehabilitation: Peri-exacerbation pulmonary rehabilitation

Exacerbations of chronic obstructive pulmonary disease (COPD) that require hospitalization are important events for patients. Functional impairment and skeletal muscle dysfunction can increase the risk of hospitalization and readmission, independent of lung function. In addition, once a patient is admitted, multiple factors can lead to worsening outcome including immobility, systemic inflammation and nutritional depletion. These non‐pulmonary factors are potentially amenable to exercise therapy, as part of pulmonary rehabilitation (PR). Peri‐exacerbation PR has an important role in the management of exacerbations of COPD. In this review, we explore how functional limitation and skeletal muscle dysfunction affect patients having a severe exacerbation of COPD, the systemic impact of hospitalization on patients including potential aetiologies and the role of PR around the time of an exacerbation. This includes rehabilitation during the inpatient phase, post‐exacerbation rehabilitation and rehabilitation bridging hospital discharge. We also describe potential future developments in peri‐exacerbation PR

Theorizing the history of women's international thinking at the 'end of international theory'

Throughout the 20th century, women were leading intellectuals on International Relations (IR). They thought, wrote, and taught on this subject in numerous political, professional, intimate, and intellectual contexts. They wrote some of the earliest and most powerful theoretical statements of what would later become core approaches to contemporary international theory. Yet, historical women, those working before the late 20th century, are almost completely missing in IR's intellectual and disciplinary histories, including histories of its main theoretical traditions. In this forum, leading historians and theorists of IR respond to the recent findings of the Leverhulme project on Women and the History of International Thought (WHIT), particularly its first two book-length publications on the centrality of women to early IR discourses and subsequent erasure from its history and conceptualization. The forum is introduced by members of the WHIT project. Collectively, the essays suggest the implications of the erasure and recovery of women's international thought are significant and wide-ranging

Impacts of Policy on Electric Vehicle Diffusion

Selection and design of appropriate government policies to support electric vehicle (EV) adoption can be aided by modelling the future impact of policy instruments relative to a given baseline estimate. This paper highlights the innovative application of a diffusion model to analyse complex impacts of EV policy instruments on future incremental EV uptake. Several versions of four key policy instruments are tested in the model: linking electric vehicle sales to Renewable Electricity Purchases (RE-EV), financial subsidies, smart charging incentives and a common cost metric to educate consumers about the lifetime costs of EVs. Market share between battery electric vehicles (BEVs), plug-in hybrid electric vehicles (PHEVs), hybrid electric vehicles (HEVs) and internal combustion engine vehicles (ICEVs) were forecasted out to the year 2034 across all 1.5 million households in the state of Victoria, Australia. The RE-EV scenario had the strongest performance in terms of economic and societal indicators. Non-subsidy policy instruments can also support uptake of EVs, especially in the case of encouraging BEV adoption. We found feebate scenarios were more effective policies than rebates. Rebate and feebate scenarios applied within the 2014-2019 timeframe compared better than those with longer timeframes. Our analyses showed how combined policy scenarios not only further improved EV uptake but also allowed government to fund rebates through feebate income