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Multichannel analyzers, as used in energy dispersive X-ray spectrometers using Si (Li), High Purity Ge, or other types of detectors, receive a series of pulses, generally in the 5 to 10 volt range full scale, which they measure and count in memory. Some are constructed using hardwired digital logic circuits to perform these memory control operations, while others incorporate standard computer memories and central processing units, with programmed logic for storing, displaying and (generally) processing the spectrum, with the advent of ever more powerful and lower cost microcomputers, it becomes increasingly attractive to adapt one to this purpose. We have done so, using an Apple II, and will describe the hardware of the interface, the logic of the data acquisition programs, and the utilization of memory in the computer.
Straw constitutes a vast, valuable, and under utilised agricultural by-product, which has a great potential for utilisation as an animal feedstuff. However, due to the way in which it is constructed, the digestible sugars, cellulose and hemicelluloses, are tightly chemically bound by heavily lignified cell walls which provide the wheat plant stem with its strength and structure, but in doing so greatly inhibit the digestibility and nutritive value of the material to ruminant animals. Therefore, the utilisation of this resource as an animal feed can only be realised effectively, if the nutritional and digestibility values of the material can be improved by the innovation and successful application of an effective treatment method, be that physical, chemical or biological. Previously devised methods of upgrading the digestibility and nutritive value of forages, with the possible exception of urea treatment, have proven either insufficient, environmentally unsound, or economically infeasible to those concerned, particularly those in developing world. Therefore, there is a distinct need to develop techniques which can avoid these pitfalls and still yield the desired results in the context of animal nutrition. Previous research has indicated that members of the genus Pleurotus white rot fungi, have great potential for application in the biological upgrading of wheat straw. Therefore, the objective of this work was to investigate biological techniques, using 3 strains of Pleurotus fungi which may have the potential to be utilised in the biological upgrading of wheat straw.
This study examined the impact of the middle school transition on general anxiety trajectories from middle childhood to middle adolescence, as well as how youths’ individual vulnerability and exposure to contextual stressors were associated with anxiety trajectories. Participants were 631 youth (47% boys, M age = 7.96 years at Time 1), followed for 7 successive years from second to eighth grade. Teachers reported on youths’ individual vulnerability to anxiety (anxious solitude) in second grade; youth reported on their anxiety in second to eighth grade and aspects of their social contexts particularly relevant to the school transition (school hassles, peer victimization, parent–child relationship quality, and friendship quality) in sixth to eighth grade. The results revealed two subgroups that showed either strongly increasing (5%) or decreasing (14%) levels of anxiety across the transition and two subgroups with fairly stable levels of either high (11%) or low (70%) anxiety over time. Youth in the latter two subgroups could be distinguished based on their individual vulnerability to anxiety, whereas youth with increasing anxiety reported more contextual stressors and less contextual support than youth with decreasing anxiety. In sum, findings suggest that the middle school transition has the potential to alter developmental trajectories of anxiety for some youth, for better or for worse.
In the developed world, wheat straw is commonly regarded as a waste product. An obvious application is as an animal feed source, however, the digestible sugars (cellulose and hemicelluloses) are chemically bound within lignified cell walls. This severely inhibits its digestibility and thus its energy and nutritive value by ruminants. Various methods have been used to increase its digestibility and nutritive value by breaking, or weakening the linkages between the lignin and hemicelluloses prior to it being fed to ruminants. Where grass and silage are abundant and relatively cheap sources of animal feed, it is not cost effective to try and utilize this resource. However where alternative feed sources are not readily available, low cost upgrading of an abundant source of fodder would have many benefits. The objectives of this study were to use 8 strains of white rot fungi to pretreat wheat straw to improve its in-vitro digestibility, and to determine the impact of the fungi on the in-vitro digestibility method, i.e. to see if fungi have any adverse effects on the digestibility method.
We present correlation function results from galaxy and QSO redshift surveys. The galaxy correlation function shows evidence for a possible ‘shoulder’ feature in ξ(s) at s = 2h−1 Mpc. At scales between 10 and 100h−1Mpc the correlation function remains close to zero and shows no evidence for any large scale galaxy clustering. The QSO correlation function detects strong QSO clustering for scales s < 10h−1 Mpc. At larger scales (10 < s < 1000h−1 Mpc) no evidence of significant QSO clustering is seen.
Among the most important stimuli for developing the FLAIR multi-object spectroscopy system on the 1.2-m UK Schmidt Telescope was its potential for carrying out large-scale redshift surveys of galaxies of intermediate magnitude (B <~ 17). During FLAIR’s lengthy development period, these objects provided the yardstick by which the system’s performance was measured, and a number of limited-area redshift surveys were carried out. We are now following these with a 1-in-3 survey over the 60 fields of the ROE/Durham Galaxy Catalogue to produce a redshift map of some 4000 galaxies out to a distance of ~ 300h−1 Mpc (where the parameter h is the Hubble constant expressed as a fraction of 100 kms−1 Mpc−1). In this paper we summarise the results from our redshift surveys to highlight the capabilities of FLAIR. We present a status report on the current large-scale survey, and show that the recently-introduced FLAIR II system will speed its progress considerably.
The Evolutionary Map of the Universe (EMU) is a proposed radio continuum survey
of the Southern Hemisphere up to declination + 30°, with the Australian
Square Kilometre Array Pathfinder (ASKAP). EMU will use an automated source
identification and measurement approach that is demonstrably optimal, to
maximise the reliability and robustness of the resulting radio source
catalogues. As a step toward this goal we conducted a “Data
Challenge” to test a variety of source finders on simulated images. The
aim is to quantify the accuracy and limitations of existing automated source
finding and measurement approaches. The Challenge initiators also tested the
current ASKAPsoft source-finding tool to establish how it could benefit from
incorporating successful features of the other tools. As expected, most finders
show completeness around 100% at ≈ 10σ dropping to about 10% by
≈ 5σ. Reliability is typically close to 100% at ≈
10σ, with performance to lower sensitivities varying between finders. All
finders show the expected trade-off, where a high completeness at low
signal-to-noise gives a corresponding reduction in reliability, and vice versa.
We conclude with a series of recommendations for improving the performance of
the ASKAPsoft source-finding tool.
One thing should already be clear from the preceding chapters: transnational climate governance is qualitatively different from the standard multilateral model that has characterised the last two decades of climate change governance. The multilateral model is a hierarchical one; it functions through the generally accepted legitimate authority of nation-states to act on issues that transcend borders. In the multilateral process, a legally binding global treaty engages all nation-states in a common (and hopefully enforceable) purpose. In theory, there is an assumption of smooth vertical development of policy that draws on the legitimate, traditional authority of nation-states, both in constructing the international treaty and formulating national regulations. International law translates to national regulation, which directs domestic actions at more local levels. Alternatives to the authority and legitimacy of the multilateral process are rarely considered quite simply because the global system has functioned through this process for over a century (Denemark & Hoffmann 2008) despite criticisms about the interests served by this system and whose order it seeks to preserve (Cox 1987; Murphy 1994; Cox & Sinclair 1996). The emergence and functioning of TCCG asks us to question and engage questions of authority and legitimacy with a more critical eye, to understand how, in Hajer’s (2003) words, we can have policy without a polity, or how, as Rosenau asks, a range of actors can govern without the legal authority to do so (Rosenau & Czempiel 1992).
Our knowledge of transnational governance has been fundamentally shaped by the theoretical perspectives and methodological approaches that have been used to study it (O’Neill et al. 2013, 444). Primarily using a case-study approach revolving around a few high-profile examples, research on transnational governance has focused on the ways in which actors have sought to engage with different forms of transnational governance, the various functions that such arrangements seek to perform and their potential consequences in terms of legitimacy and effectiveness. Such approaches have yielded significant insights into these aspects of transnational governance but cannot, by their very nature, achieve a more comprehensive or systematic view. As O’Neill et al. (2013) suggest, such approaches may be ill-equipped to deal with the challenges of ‘complexity and uncertainty, vertical linkages across multiple scales, horizontal linkages across issue areas, and (often rapidly) evolving problem sets and institutional initiatives’ that beset global environmental governance research, such that new methodological approaches are required. If we regard transnational governance initiatives as having something in common – in terms of what they are seeking to accomplish, or in terms of the ways in which they are organised and constituted – we suggest that methodological innovations capable of creating a more comprehensive account of the overall phenomenon are required.
In order to develop such a broader understanding of the extent and nature of transnational governance in the climate change domain, our approach extends beyond small n case-studies or surveys of one particular type of transnational arrangement through the construction and analysis of a database of sixty transnational climate governance initiatives. This approach enables an analysis of the contours of transnational climate governance in a way that has not been possible within existing methodological approaches, allowing for a more thorough description of who and what are involved, where it is taking place, and how and why it is being pursued.
This chapter examines the political dynamics underpinning the emergence of TCCG. In the first section of the chapter, we undertake a temporal analysis of the growth of TCCG, focusing on its parallel evolution with the international climate change regime and the broader political-economic shifts outlined in the previous chapter. In the second section of the chapter, our analysis turns to consider the patterns and drivers of private, hybrid and public transnational initiatives over time and to consider the governance functions that are being pursued in these different forms of TCCG. Through this analysis, we seek to capture the process through which climate politics has pluralised by describing and offering explanations for the growth of institutional diversity over time.
In doing so, the three theoretical lenses discussed in Chapter 3 serve as guides for our analysis. The agency-centred perspective is particularly helpful for highlighting the interests of the actors that populate climate politics, their sources of influence and factors underpinning the demand and supply of new forms of transnational governance. The social and system dynamics perspective helps to explain the diffusion of common practices and governance techniques through communities of environmental practitioners and policymakers. Finally, the critical political theory perspective sheds light on the marketisation of a substantial cluster of TCCG initiatives, the ideological underpinnings of these initiatives and the particular constellations of public and private forces that animate them. We use the TCCG database and illustrative case-studies to interrogate these issues illuminating the relationship between the agency of different actors, market logics, functional imperatives and normative contexts.
Our intention at the outset of this project was to move beyond the focus on individual cases or particular segments of the world of TCCG in order to examine what we might be able to discover collectively about this phenomenon. In this final chapter, we return to this overarching theme and identify the ways in which our analysis of TCCG contributes to ongoing debates in the field.
Underpinning this contribution, we suggest, are two novel aspects of our work. First, the book provides the first analysis of transnational governance that includes both an extensive database of a large number and a diverse array of particular case-studies. Existing research in the field of transnational governance has been mostly based on either individual examples or a small number of cases; whereas these can provide rich and nuanced analyses, there is nevertheless a significant value added in attempting to say something about this phenomenon as a whole. While we have not been able to survey the entire universe of cases in the transnational climate governance arena, a task that would be difficult to undertake given that much of this activity is relatively unknown, we have devised a strategy to maximise the diversity of cases we explore. In the sense that the approach we have developed includes the full variety of forms of TCCG, we thus suggest that it can be regarded as representative of the phenomenon as a whole. The database approach has enabled us to see patterns in the types of initiatives that predominate in TCCG, in terms of the types of actors, the issues upon which they focus, the forms of institutionalisation, the practices of governance, the claims to legitimacy and the geographical reach of TCCG initiatives.