Search results for " Reproduction"

Zwischen Kultur und Kalkül? Vertrauen und Sozialkapital im Kontext der neoinstitutionalistischen Wende

2004

Trust and social capital work in social networks as informal institutions, favouring cooperation between the participants of such social interaction. However, the increasing use of both terms has been accompanied by vanishing conceptual and theoretical precision. In order to counterbalance this development this article tries to clarify some of the major puzzles connected with both terms. First, we embed trust and social capital within the institutionalist turn in political science. Second however, we demonstrate that trust and social capital have been modelled from at least two perspectives: sociological institutionalism and economic institutionalism. Furthermore, attempts of combining thos…

Introduction: Situating the Human in Social Robots

2015

Traditionally the social has been considered as a characteristic of human beings, not of inanimate machines. At the same time, each technological device can be considered social born out of a complex process of invention, implementation, distribution and domestication by users (Hirsch and Silverstone 2004; Lasen 2013). Since recent technical developments have made possible rather detailed technical mimicking of human beings and their social features, and incorporating them in silicon chips, there is a pronounced need to understand to what extent the humanness can be implanted in social robots. This is also an occasion to think over and discuss what the human is when considered in this conte…

Higher Education from a Longitudinal and Life Course Perspective

2015

International audience; This symposium brings together scholars from across Canada, Europe, and the United States to explore how longitudinal and life course research can be used to study higher education. Highlighting both qualitative and quantitative research, we will explore aspects of social reproduction, inequality, stratification, wellbeing, and school-to-work transitions.

La prestación de maternidad en los supuestos de gestación subrogada

2018

Surrogate pregnancy, as a technique of assisted reproduction prohibited by Spanish law, raises a number of legal questions than, in certain cases, trascend of the Civil Law. Specifically, it has been discussed about de possibility that de person or persons consigner in the gestation contract substitution have access to the provision for maternity benefit. Recently, the Spanish Supreme Court has responded to this issue in the sense of recognizing the right to the provision for maternity benefit to the father or mother ?in fact?, efecttively, develop own parental powers.

Jonathan Sterne, The Audible Past: Cultural Origins of Sound Reproduction. Duke University Press, Durham & London, 2003. 450 pp. Paperback. ISBN …

2004

Speciation in monogonont rotifers

1997

Monogonont rotifers are cyclical parthenogens livingin limnic habitats with considerable seasonalvariation and often with island-like features. Theoccurrence of bisexual reproduction in these organismsmakes it feasible to define ’fields for generecombination‘, i.e. biological species. In thispaper, we analyze the structure of the diversity inmonogonont rotifers using several data sets: taxonomicand intraspecific diversity as reported inidentification keys, morphological variation reportedin ecological studies, and allozyme and matingbehavior patterns. Our analysis suggests that siblingspecies may be frequent in rotifers. Monogonontrotifers seem to meet conditions for an activespeciation, wh…

Varied response of underground and aboveground plant matter: functional diversity of three different vegetational types after translocation to reclai…

2019

The indicators of functional diversity are increasingly used to assess the conservation effectiveness of the most valuable habitats. However, little is known about the response of functional traits, their diversity, and divergence in plant communities after translocation. To assess how functional diversity changes on dry heath, meadow, and fen after translocation of entire turfs of vegetation from an airport area to the Botanical Garden in Radzionkow, we used leaf–height–seed (LHS) traits (specific leaf area, height, and seed mass) and vegetative traits (bud bank size, bud bank depth, and lateral spread). We also measured community weighted means and multifunctional diversity metrics (funct…

Concentration of glutathione and expression of glutathione peroxidases 1 and 4 in fresh sperm provide a forecast of the outcome of cryopreservation o…

2004

Oxidative stress imbalance potentially leads to damage of the structure of the cell and macromolecules such as plasma membrane components, proteins, and DNA. The plasma membrane of the sperm cell, which has high levels of polyunsaturated fatty acids, renders it particularly sensitive to free radical–mediated attacks. The freezing and subsequent thawing of sperm is a physically stressful process carried out during routine procedures in assisted reproduction techniques, which results in a highly variable and unpredictable reduction in the number of motile sperm cells. Subsequently, oxidative status can positively or negatively affect the motility, viability, and fertilizing capacity of thawed…

Spatio-temporal small area surveillance of the COVID-19 pandemic

2022

Abstract The emergence of COVID-19 requires new effective tools for epidemiological surveillance. Spatio-temporal disease mapping models, which allow dealing with small units of analysis, are a priority in this context. These models provide geographically detailed and temporally updated overviews of the current state of the pandemic, making public health interventions more effective. These models also allow estimating epidemiological indicators highly demanded for COVID-19 surveillance, such as the instantaneous reproduction number R t , even for small areas. In this paper, we propose a new spatio-temporal spline model particularly suited for COVID-19 surveillance, which allows estimating a…

The effect of different vigour olive clones on growth, dry matter partitioning and gas exchange under water deficit

2012

Abstract In the last decade, high-density olive planting systems have been developed to facilitate less costly mechanical harvesting and pruning by using straddle harvesters. High-density orchards allow faster production since the first crop of fruit starts a few years after planting. In high-density orchards the control of tree size is essential. It is possible to control the vigour and size of the tree by selecting suitable cultivars, by choosing rootstocks capable of controlling scion vigour and, finally, by applying deficit irrigation to reduce plant vegetative growth. Knowledge of tree water requirements is needed for precise irrigation scheduling. In this study, the dwarfing capacity …