Three feminist critiques of varying feminist capitulations to crisis-hegemony

The seemingly intractable pull between the Scylla of 'resistance' and the Charybdis of 'compliance' and the agonistic dilemmas presented by the complexity and difficulty of positioning feminism in relation to them both is well-traced in these chapters by Dianne Otto, Julie Mertus and Maria Grahn-Farley. While a range of themes emerges from reflection on these nuanced and thoughtful chapters, at the heart of each, in different ways, the colonisation of certain emancipatory feminist projects and agendas by the crisis-driven post 9/11 international legal discourse emerges as a central concern, along with a set of related sub-themes: The traction (and inequality) of hegemonic and counter-hegemonic thought-worlds and actions; the pernicious effects of decontextualisation (either the transcendence or the 'emptying out' of context (including,worryingly, lived experience of violation)); the fragile potency of ground level viewpoint, action and perspective; the false totality of the securityhegemon; its liquid propagandism, and related concerns circling around co-opted feminist responses

Landscape architecture and health

Swedes are living increasingly longer lives, but the number of years lived in good health is decreasing. The present doctoral dissertation is focused on the threat to Swedish public health that is constituted by aches and pain and various types of mental illnesses, of which fatigue reactions, often called ”burnout syndromes,” are increasing most rapidly. Besides the personal suffering involved, the costs of increased ill health constitute a threat to the welfare of Swedish society. According to the Swedish government, good health has become a resource – perhaps even the country’s most important resource for sustainable development. Today, several scientific disciplines consider health to be a positive and holistic state encompassing the individual’s entire life situation: biological, cultural, social and not least environmental aspects. With the Swedish Parliament’s adoption of the public health bill Public Health Objectives, public health work in Sweden is to be based on the idea of finding different societal factors that promote good health on equal terms for the entire population. The present doctoral dissertation focuses on a health factor represented by different types of natural environments. The dissertation is based on two studies of two different types of health-promoting natural environments: Healing gardens – Improvement of ill health Urban green spaces – Maintenance and fortification of good health Healing gardens are gardens that are purposely designed to promote health among a certain group of patients. The dissertation focuses on the type of healing garden that is specially intended for patients suffering from fatigue reactions or burnout syndromes. Interest in healing gardens is spreading rapidly throughout the world. However, both in Sweden and in other countries, ”healing gardens” are being laid out that do not actually possess health-promoting qualities. In order for health to actually be improved, purposeful design based on the patient group’s special needs is required. There is a great need for scientific knowledge concerning how these gardens should be designed. For a long time past in our history, the importance of city greenery for city dwellers’ health and wellbeing has been pointed out. In the present dissertation, urban green spaces – i.e. greenery in the city such as parks, green areas, schoolyards and gardens belonging to a house – are viewed as healthpromoting elements of city planning. Interest in how urban green spaces can maintain and fortify human health is spreading among scientists, architects, politicians and the public. Despite this interest, the problem remains of how urban green spaces should be planned and designed so as to attract the urban population. The dissertation has an applied perspective and is aimed at both scientists and practitioners. It presents findings from two different studies, one on how healing gardens may be designed for people with burnout syndromes and the other on how urban green spaces may be planned from a health-promoting perspective. The overall purpose is, thus, that the dissertation should contribute to the evidence-based design and planning of health-promoting outdoor environments

Landscape planning to promote well being

There has been a rapid increase in knowledge regarding the importance of the external environment to our health. Eight characteristics of the outdoor environment (serene, wild, lush, spacious, the common, the pleasure garden, festive/ centre, and culture) have been identified as fulfilling recreational needs through a number of environmental psychology studies carried out at the Swedish University of Agricultural Sciences, Alnarp, Sweden, between 1995 and 2005. The external environment has become an increasingly decisive factor in people’s choices regarding where to live and work; the landscape has become a competitive factor in attempts made by companies and local authorities to attract well-educated, mobile manpower and housing. Knowledge-based companies predominate in the Öresund Region of Sweden and Denmark, which at present has substantial recreational values making it an attractive area in which to live and work. The region’s annual population growth is approximately 20,000 to 25,000 inhabitants. The prime ministers of Sweden and Denmark have expressed a common objective that the Öresund Region be one of Europe’s cleanest metropolitan regions. The objective of this article is to present methods for implementing the eight characteristics as indicators for impact assessment in planning projects. The article presents case studies of the application of environmental impact assessments in the municipalities of Malmö and Svedala, which are situated in the immediate vicinity of the Öresund Bridge. Development plans are being evaluated through impact assessment. Mitigation and compensation measures are being created to achieve the environmental quality goals defined by the eight characteristics. The case studies referred to in this article are in very early planning phases, either the feasibility or pre-feasibility phase. This article does not present complete investigations of balancing, but discusses some principal ways of defining values and suggests measures for mitigating and compensating for negative impacts on existing values

An in situ shelly fauna from the lower Paleozoic Zapla diamictite of northwestern Argentina: implications for the age of glacial events across Gondwana

A shelly fauna from the upper part of the Zapla glacial diamictite includes thelingulate brachiopod Orbiculoidea radiata Troedsson, the rhynchonelliforms Dalmanella cf. testudinaria (Dalman) and Paromalomena sp., the bivalve Modiolopsis? sp., and the trilobite Dalmanitina subandina Monaldi and Boso. Both taphonomic and paleoecologic data indicate a lack of transport reflecting the original community. The assemblage is closely comparable to the widespread latest Ordovician Hirnantia-Dalmanitina fauna. The Hirnantian age of the Zapla diamictite is further corroborated by the record of the northern Gondwana chitinozoans Spinachitina cf. oulebsiri Paris and Desmochitina minor typicaEisenack. The graptolites and chitinozoans from the overlying Lipeón Formation indicate that the postglacial transgression took place in the earliest Llandovery (P. acuminatus Biozone). According to the tectonosedimentary evidence, the Early Silurian age of the Cancañiri and San Gabán diamictites of north-central Bolivia and south Peru based on their palynological record is more likely the age of posglacial gravity flows and not that of the glaciation. We support the hypothesis that the weakly lithified glacigenic deposits ofHirnantian age were reworked and redistributed by high-energy marine processes during the postglacial transgression and then transported to the adjacent deep-marine trough. Ironrich horizons have been recognized in many basins of southern South America reflecting eustatic and paleoclimatic fluctuations. Most of them formed during the early stages of the postglacial transgression at the Ordovician/Silurian transition and are associated with low sedimentation rates and condensed intervals. The mild maritime postglacial climate, the increasing atmospheric CO2, and possibly the presence of incipient vegetated areas led toextensive weathering of glacigenic sediments supplying iron into the marine system to form ferruginous deposits. The sea level fall related to the peak of glaciation is recorded by both paleovalley incision and a sharp subaerial to subglacial unconformity. The transgressive systems tract starts with fluvio-estuarine deposits within incised valleys followed by widespread deposition of subtidal to open marine organic-rich shales onlapping regionally the basement rocks. The recognition of key stratigraphic markers (e.g. sequence boundary, flooding surface, ferruginous beds), alongside reliable micro and macropaleontological evidence allow a more accurate correlation between the Central Andean Basin of Peru, Bolivia and NW Argentina, the W Puna region, the Paraguayan and Brazilian sectors of the Paraná Basin, the Precordillera Basin of W Argentina, and the Cape Basin of South Africa.Fil: Benedetto, Juan Luis Arnaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: Halpern, Karen. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Centro de Investigaciones en Ciencias de la Tierra. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones en Ciencias de la Tierra; ArgentinaFil: de la Puente, Graciela Susana. Universidad Nacional del Comahue. Facultad de Ingeniería. Departamento de Geología y Petróleo; ArgentinaFil: Monaldi, Cesar Ruben. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentin

Quasiperiodic time dependent current in driven superlattices: distorted Poincare maps and strange attractors

Intriguing routes to chaos have been experimentally observed in semiconductor superlattices driven by an ac field. In this work, a theoretical model of time dependent transport in ac driven superlattices is numerically solved. In agreement with experiments, distorted Poincare maps in the quasiperiodic regime are found. They indicate the appearance of very complex attractors and routes to chaos as the amplitude of the AC signal increases. Distorted maps are caused by the discrete well-to-well jump motion of a domain wall during spiky high-frequency self-sustained oscillations of the current.Comment: 10 pages, 4 figure

Photo-excited semiconductor superlattices as constrained excitable media: Motion of dipole domains and current self-oscillations

A model for charge transport in undoped, photo-excited semiconductor superlattices, which includes the dependence of the electron-hole recombination on the electric field and on the photo-excitation intensity through the field-dependent recombination coefficient, is proposed and analyzed. Under dc voltage bias and high photo-excitation intensities, there appear self-sustained oscillations of the current due to a repeated homogeneous nucleation of a number of charge dipole waves inside the superlattice. In contrast to the case of a constant recombination coefficient, nucleated dipole waves can split for a field-dependent recombination coefficient in two oppositely moving dipoles. The key for understanding these unusual properties is that these superlattices have a unique static electric-field domain. At the same time, their dynamical behavior is akin to the one of an extended excitable system: an appropriate finite disturbance of the unique stable fixed point may cause a large excursion in phase space before returning to the stable state and trigger pulses and wave trains. The voltage bias constraint causes new waves to be nucleated when old ones reach the contact.Comment: 19 pages, 8 figures, to appear in Phys. Rev.

Chitinozoan biozonation and new lithostratigraphical data in the Upper Ordovician of the Fauquez and Asquempont areas (Brabant Massif, Belgium)

status: publishe

Global timing: a conceptual framework to investigate the neural basis of rhythm perception in humans and non-human species

Timing cues are an essential feature of music. To understand how the brain gives rise to our experience of music we must appreciate how acoustical temporal patterns are integrated over the range of several seconds in order to extract global timing. In music perception, global timing comprises three distinct but often interacting percepts: temporal grouping, beat, and tempo. What directions may we take to further elucidate where and how the global timing of music is processed in the brain? The present perspective addresses this question and describes our current understanding of the neural basis of global timing perception

Current-voltage characteristic and stability in resonant-tunneling n-doped semiconductor superlattices

We review the occurrence of electric-field domains in doped superlattices within a discrete drift model. A complete analysis of the construction and stability of stationary field profiles having two domains is carried out. As a consequence, we can provide a simple analytical estimation for the doping density above which stable stable domains occur. This bound may be useful for the design of superlattices exhibiting self-sustained current oscillations. Furthermore we explain why stable domains occur in superlattices in contrast to the usual Gunn diode.Comment: Tex file and 3 postscript figure