Hardseededness in Mediterranean annual pasture legumes in Australia: a review

2005 ◽  
Vol 56 (7) ◽  
pp. 645 ◽  
Author(s):  
G. B. Taylor

Hardseededness (seed coat impermeability) is the main seed dormancy mechanism for regulating germination of annual pasture legumes both within and between years. Progress made in Australia over the past 30 years towards an understanding and better utilisation of the mechanism is the subject of this review, together with relevant overseas studies. Although some legumes produce virtually no hard seeds, newly ripened seeds of most cultivated annual pasture legumes are >90% hard when produced under favourable seed maturation conditions. The pattern of seed softening (loss of impermeability) varies widely among legumes both within and between years and is one of the more important considerations in selection programs. The many factors that influence the longevity of seed hardness are described. Differences among legumes in patterns of summer and autumn seed softening, which may influence the extent of seed losses through false breaks of season, are explained in terms of a 2-stage conceptual model of the seed softening process. This model has led to the development of laboratory techniques that effectively simulate field softening behaviour in a wide range of legumes. Different rates of seed imbibition, which may be attributable to a previously unrecognised stage in the seed softening process, and which can offer some further protection against false breaks of season are also described. The wide range of seed softening characteristics that are now recognised provides opportunities for better adapting pasture legumes to particular management systems, including rotations with crops.

1950 ◽  
Vol 2 (3) ◽  
pp. 124-131 ◽  
Author(s):  
R. G. Hopkinson

A technique is described by which, the quantitative connection between physical aspects of a stimulus situation and subjective aspects of the perceptual response may be conveniently and reliably determined. The subject is given control of one of the significant physical variables such, for instance, as brightness, and is asked to set this variable to correspond In turn with a limited number of defined criteria relating to a subjective variable such as glare-discomfort It is found that each criterion acts as a check upon judgments made in terms of the others, so that the scatter of the control settings Is less than when a single criterion is used The functional relationship between the physical and the subjective variable can be estimated, and provided care Is taken in the design of the experiment and In the selection of observers, consistent results are obtained. This technique has been applied during the past ten years to a wide range of visual problems which Include those of the visibility of radar echoes, the visibility of street-lighting from the air, discomfort-glare and ease of reading. It Is thought that It might find wide application not only in applied Psychological work but in the investigation of problems of theoretical import.


2020 ◽  
Vol 1 (2) ◽  
pp. 157-172
Author(s):  
Thomas Leitch

Building on Tzvetan Todorov's observation that the detective novel ‘contains not one but two stories: the story of the crime and the story of the investigation’, this essay argues that detective novels display a remarkably wide range of attitudes toward the several pasts they represent: the pasts of the crime, the community, the criminal, the detective, and public history. It traces a series of defining shifts in these attitudes through the evolution of five distinct subgenres of detective fiction: exploits of a Great Detective like Sherlock Holmes, Golden Age whodunits that pose as intellectual puzzles to be solved, hardboiled stories that invoke a distant past that the present both breaks with and echoes, police procedurals that unfold in an indefinitely extended present, and historical mysteries that nostalgically fetishize the past. It concludes with a brief consideration of genre readers’ own ambivalent phenomenological investment in the past, present, and future each detective story projects.


Author(s):  
John Hunsley ◽  
Eric J. Mash

Evidence-based assessment relies on research and theory to inform the selection of constructs to be assessed for a specific assessment purpose, the methods and measures to be used in the assessment, and the manner in which the assessment process unfolds. An evidence-based approach to clinical assessment necessitates the recognition that, even when evidence-based instruments are used, the assessment process is a decision-making task in which hypotheses must be iteratively formulated and tested. In this chapter, we review (a) the progress that has been made in developing an evidence-based approach to clinical assessment in the past decade and (b) the many challenges that lie ahead if clinical assessment is to be truly evidence-based.


In the last year or two there has been a remarkable increase in the interest, both popular and scientific, in the subject of climatic change. This stems from a recognition that even a highly technological society is vulnerable to the effects of climatic fluctuations and indeed may become more so, as margins of surplus food production are reduced, and nations become more interdependent for their food supply. In this respect our concern is with quite small changes - a degree (Celsius) or less in temperature and 10 % or so in rainfall. Probably we may discount some of the more alarmist suggestions of an imminent and rapid change towards near glacial conditions as these are based on very sketchy evidence. However, whatever the time-scale of climatic fluctuations with which we are concerned, we may hope to learn a great deal which is relevant to the factors which will control our future climate from the study of its more extreme vagaries in the past. Information relevant to the weather in such extreme periods is coming forward in increasing detail and volume from a wide range of disciplines. The variety of the evidence, its lack of precision as a strict measure of climate, and the number of different sources all make it difficult for an individual to build up a clear picture of past climates. However such a picture is needed, if explanations and interpretation are to be possible. Ideally one would need a synchronous picture of the climate of the whole world at selected epochs in the past. Various international programmes are directed to forming such pictures.


Author(s):  
Tess Grynoch

Objective: To examine how Canadian academic medical libraries are supporting mobile apps, what apps are currently being provided by these libraries, and what types of promotion are being used. Methods: A survey of the library websites for the 17 medical schools in Canada was completed. For each library website surveyed, the medical apps listed on the website, any services mentioned through this medium, and any type of app promotion events were noted. When Facebook and Twitter accounts were evident, the tweets were searched and the past two years of Facebook posts scanned for mention of medical apps or mobile services/events. Results: All seventeen academic medical libraries had lists of mobile medical apps with a large range in the number of medical relevant apps (average=31, median= 23). A total of 275 different apps were noted and the apps covered a wide range of subjects. Five of the 14 Facebook accounts scanned had posts about medical apps in the past two years while 11 of the 15 Twitter accounts had tweets about medical apps. Social media was only one of the many promotional methods noted. Outside of the app lists and mobile resources guides, Canadian academic medical libraries are providing workshops, presentations, and drop-in sessions for mobile medical apps. Conclusion: While librarians cannot simply compare mobile services and resources between academic medical libraries without factoring in a number of other circumstances, librarians can learn from mobile resources strategies employed at other libraries, such as using research guides to increase medical app literacy.


Author(s):  
Annarita Teodosio

Abstract: The relationship between Le Corbusier and the visual arts (drawing, photography and cinema) is deep and complex and, although the subject of numerous publications and research since the late 60s, still arouses much interest, as evidenced by the many events organized in the last years - "Le Corbusier. Vue sur la mer ", Maison La Roche, Paris, 2012; "Construire the image: Le Corbusier et la Photographie", Musée des Beaux-Arts, the Chaux-de-Fonds, 2013; or the recent "Le Corbusier and photography", IUAV, Venice, May 2015-. The paper, starting out from the researches already developed, proposes a further reflection on the relationship between the Swiss architect and the photography, paying particular interest to the shooting made in first person. The study analyzes the different approaches and the different subjects photographed in the course of his life and it is proposed to include the work of Le Corbusier in the broader cultural context of the twentieth century, a period in which the relationship between architecture and visual communication, thanks to the many possibilities offered by technological innovations, it becomes increasingly close and inevitable. Resumen: La relación entre Le Corbusier y las artes visuales (dibujo, fotografía y cine) es profunda y articulada y, aunque es objeto de numerosas publicaciones y investigaciónes desde el finales de los años 60es, todavía despierta mucho interés, como lo demuestran los diversos eventos realizados en los últimos años - “Le Corbusier. Vue sur la mer”, Maison La Roche, Parìs, 2012; “Construire l’image: Le Corbusier et la photographie”, Musée des Beaux-Arts, la Chaux-de-Fonds, 2013; o la más reciente “Le Corbusier e la fotografia”, IUAV , Venezia, mayo 2015-. El articulo, a partir desde investigación ya desarrollado, propone una reflexión más sobre la relación entre el arquitecto suizo y la fotografía, prestando especial interés a las realizata en primera persona. El estudio analiza los diferentes enfoques y diferentes sujetos fotografiados en el curso de su vida y se propone de insertar la obra de Le Corbusier en el contexto cultural más amplio del siglo XX, un período en el que la relación entre la arquitectura y la comunicación visual, gracias a las muchas posibilidades que ofrecen las innovaciones tecnológicas, se vuelve cada vez más estrecha e inevitable.  Keywords: Le Corbusier; photography; representation of architecture. Palabras clave: Le Corbusier; fotografia; representaciones de la arquitectura. DOI: http://dx.doi.org/10.4995/LC2015.2015.947


2021 ◽  
Author(s):  
◽  
Erin Keenan

<p>Māori urbanisation and urban migrations have been the subject of much discussion and research, especially following World War Two when Māori individuals, whānau and communities increasingly became residents of towns and cities that were overwhelmingly Pākehā populated. However, Māori urbanisation experiences and urban migrations are difficult topics to address because kaumātua are reluctant to discuss ‘urban Māori’, especially considering its implications for Māori identities. The original contribution this thesis makes to histories of Māori urban migrations is that it explores these and other understandings of urbanisations to discover some of their historical influences. By discussing urbanisations directly with kaumātua and exploring historical sources of Māori living in, and moving to, the urban spaces of Wellington and the Hutt Valley through the twentieth century, this thesis is a ‘meeting place’ for a range of perspectives on the meanings of urbanisations from the past and the present. Although urbanisation was an incredible time of material change for the individuals and whānau who chose to move into cities such as Wellington, the histories of urban migration experiences exist within a scope of Māori and iwi worldviews that gave rise to multiple experiences and understandings of urbanisations. The Wellington region is used to show that Māori in towns and cities used Māori social and cultural forms in urban areas so that they could, through the many challenges of becoming urban-dwelling, ensure the persistence of their Māoritanga. Urbanisations also allowed Māori to both use traditional identities in urban areas, as well as develop new relationships modelled on kinship. The Ngāti Pōneke community is used as an example of the complex interactions between these identities and how many Māori became active residents in but not conceptually ‘of’ cities. As a result, the multiple and layered Māori identities that permeate throughout Māori experiences of the present and the past are important considerations in approaching and discussing urbanisations. Urban Māori communities have emphasised the significance of varied and layered Māori identities, and this became particularly pronounced through the Māori urban migrations of the twentieth century.</p>


PEDIATRICS ◽  
1959 ◽  
Vol 23 (1) ◽  
pp. 131-131
Author(s):  
SEYMOUR S. BLUESTONE

This volume collates knowledge accumulated, mainly during the past decade, by the many individuals and groups concerned with the provision of rehabilitation services. As one of the outstanding among these individuals, the author can speak authoritatively on the wide range of subjects covered. The book is well documented with references and is supplemented by an extensive classified bibliography. Intended "to form a source of reference and guidance for all those interested in (rehabilitation), particularly those at the planning level of community activity," the book should be of even wider interest as a significant contribution to the basic understanding of rehabilitation by all thinking people.


Author(s):  
Quintin Colville ◽  
James Davey

This introduction gives on overview of the sub-discipline of naval history since its emergence in the early eighteenth-century. It outlines the various social, cultural and political influences that have shaped the subject over the past three centuries, and discusses its relationship with the wider historical profession. The second half of the introduction sums up the current state of naval history, describing the many historiographies that now have a bearing on how the subject is conducted. Each contribution to the volume is introduced in this context, offering a precis of the chapters that follow.


Author(s):  
Alan Heyes

Through the Global Partnership the UK continues to make a significant contribution to improve national and global security. Over the past year the UK has continued to implement a wide range of projects across the breadth of its Global Partnership Programme. As well as ensuring the Programme is robust and capable of dealing with new challenges, the UK has cooperated with other donor countries to help them progress projects associated with submarine dismantling, scientist redirection, enhancing nuclear security and Chemical Weapons Destruction. The Global Partnership, although only five years old, has already achieved a great deal. Some 23 states, plus the European Union, are now working closer together under the Global Partnership, and collectively have enhanced global regional and national security by reducing the availability of Weapons of Mass Destruction (WMD) materials and expertise to both states of concern and terrorists. Considerable progress has already been made in, for example: • Improving the security of fissile materials, dangerous biological agents and chemical weapons stocks; • Reducing the number of sites containing radioactive materials; • Working towards closure of reactors still producing weapon-grade plutonium; • Improving nuclear safety to reduce the risks of further, Chernobyl style accidents; • Constructing facilities for destroying Chemical Weapons stocks, and starting actual destruction; • Providing sustainable employment for former WMD scientists to reduce the risk that their expertise will be misused by states or terrorists. By contributing to many of these activities, the UK has helped to make the world safer. This paper reports on the UK’s practical and sustainable contribution to the Global Partnership and identifies a number of challenges that remain if it is to have a wider impact on reducing the threats from WMD material.


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