Theoretical Problems in High Resolution Solar Physics, 2

The Science Working Group for the High Resolution Solar Observatory (HRSO) laid plans beginning in 1984 for a series of workshops designed to stimulate a broadbased input from the scientific community to the HRSO mission. These workshops have the dual objectives of encouraging an early start on the difficult theoretical problems in radiative transfer, magnetohydrodynamics, and plasma physics that will be posed by the HRSO data, and maintaining current discussions of results in high resolution solar studies. This workshop was the second in the series. The workshop format presented invited review papers during the formal sessions and contributed poster papers for discussions during open periods. Both are presented

Community Norms and Organizational Practices: The Legitimization of Wage Arrears in Russia, 1992-1999

What role do community norms play in the diffusion and persistence of new organizational practices? We explore this question through an examination of the widespread practice of wage arrears, the late and nonpayment of wages, in Russia during the 1990s. Existing research on wage arrears most often examines this practice as a means of flexible wage adjustment under difficult economic conditions. We develop an alternative theory that explains wage arrears through their acceptance as a legitimate form of organizational behavior within local communities. Our empirical analysis finds some support for the neoclassical position that wage arrears reflect adjustment to negative shocks, but this perspective fails to account for a number of important facts, including a high level of arrears among apparently successful firms. In contrast, our results find strong support for the institutional perspective. The statistical analysis demonstrates powerful and robust community effects both in firm adoption of this practice, controlling for firm performance, liquidity, and fixed firm effects, and in workers' reaction to arrears, through their quit (exit) and strike (voice) behavior.institutions, norms, legitimacy, arrears, organizational practices, sociology, Russia

[Accepted Manuscript] Sexual rights but not the right to health? Lesbian and bisexual women in South Africa's National Strategic Plans on HIV and STIs

Synergies between securing sexual rights and the right to health have been pursued where there are clear public health gains to be made, such as lowering incidence of HIV and other sexually transmitted infections (STI). South Africa?s 1996 Constitution outlawed discrimination on the basis of sexual orientation and promoted the right to health. This qualitative health policy analysis sought to understand why and how interventions to improve sexual health of lesbian and bisexual women and address sexual violence were initially proposed in the HIV & AIDS and STI Strategic Plan for South Africa 2007?2011 and why and how these concerns were deprioritised in the National Strategic Plan (NSP) on HIV, STIs and TB 2012?2016. A conceptual framework considered several determinants of political priority for the inclusion in NSP development in 2007 and 2011 around sexual health concerns of women who have sex with women. This article presents findings from 25 in?depth key informant interviews and document review and highlights results of application of categories for a framework on determinants of political priority for lesbian and bisexual women?s issues to be included in South Africa?s NSP including: actor power, ideas, political context and issue characteristics. The article demonstrates how the epidemiological and structural drivers of lesbian and bisexual women?s vulnerability to HIV and STIs, including sexual violence and other violations of their sexual rights, have been expressed in policy forums and whether this has made an impact on lesbian and bisexual women?s ability to claim the right to health

Community Norms and Organizational Practices: The Legitimization of Wage Arrears in Russia, 1992-1999

What role do community norms play in the diffusion and persistence of new organizational practices? We explore this question through an examination of the widespread practice of wage arrears, the late and nonpayment of wages, in Russia during the 1990s. Existing research on wage arrears most often examines this practice as a means of flexible wage adjustment under difficult economic conditions. We develop an alternative theory that explains wage arrears through their acceptance as a legitimate form of organizational behavior within local communities. Our empirical analysis finds some support for the neoclassical position that wage arrears reflect adjustment to negative shocks, but this perspective fails to account for a number of important facts, including a high level of arrears among apparently successful firms. In contrast, our results find strong support for the institutional perspective. The statistical analysis demonstrates powerful and robust community effects both in firm adoption of this practice, controlling for firm performance, liquidity, and fixed firm effects, and in workers’ reaction to arrears, through their quit (exit) and strike (voice) behavior.institutions, norms, legitimacy, arrears, organizational practices, sociology, Russia

On the theory of coronal heating mechanisms

Theoretical models describing solar coronal heating mechanisms are reviewed in some detail. The requirements of chromospheric and coronal heating are discussed in the context of the fundamental constraints encountered in modelling the outer solar atmosphere. Heating by acoustic processes in the 'nonmagnetic' parts of the atmosphere is examined with particular emphasis on the shock wave theory. Also discussed are theories of heating by electrodynamic processes in the magnetic regions of the corona, either magnetohydrodynamic waves or current heating in the regions with large electric current densities (flare type heating). Problems associated with each of the models are addressed

Adaptation and acclimatization to ocean acidification in marine ectotherms: an in situ transplant experiment with polychaetes at a shallow CO₂ vent system

Metabolic rate determines the physiological and life-history performances of ectotherms. Thus, the extent to which such rates are sensitive and plastic to environmental perturbation is central to an organism's ability to function in a changing environment. Little is known of long-term metabolic plasticity and potential for metabolic adaptation in marine ectotherms exposed to elevated pCO₂. Consequently, we carried out a series of in situ transplant experiments using a number of tolerant and sensitive polychaete species living around a natural CO₂ vent system. Here, we show that a marine metazoan (i.e. Platynereis dumerilii) was able to adapt to chronic and elevated levels of pCO₂. The vent population of P. dumerilii was physiologically and genetically different from nearby populations that experience low pCO₂, as well as smaller in body size. By contrast, different populations of Amphiglena mediterranea showed marked physiological plasticity indicating that adaptation or acclimatization are both viable strategies for the successful colonization of elevated pCO₂ environments. In addition, sensitive species showed either a reduced or increased metabolism when exposed acutely to elevated pCO₂. Our findings may help explain, from a metabolic perspective, the occurrence of past mass extinction, as well as shed light on alternative pathways of resilience in species facing ongoing ocean acidification

Where there’s ‘willingness’ there’s a way: barriers and facilitators to maternal, newborn and child health data sharing by the private health sector in Uttar Pradesh, India

In India and Uttar Pradesh (UP), the private health sector plays an important role in health care services, including institutional deliveries, but there is limited information on the availability of maternal, newborn and child health (MNCH) data that private facilities maintain and share with the public health information system. Sharing data could help the public sector plan their resources more efficiently. Aim of the study: To explore current practices of MNCH data availability and sharing/reporting by private health facilities and the barriers and facilitators to data sharing

Development and Morphology of the Ventricular Outflow Tracts.

It is customary, at the current time, to consider many, if not most, of the lesions involving the ventricular outflow tract in terms of conotruncal malformations. This reflects the introduction, in the early 1940s, of the terms conus and truncus to describe the components of the developing outflow tract. The definitive outflow tracts in the postnatal heart, however, possess three, rather than two, components. These are the intrapericardial arterial trunks, the arterial roots, and the subvalvar ventricular outflow tracts. Congenital lesions afflicting the arterial roots, however, are not currently considered to be conotruncal malformations. This suggests a lack of logic in the description of cardiac development and its use as a means of categorizing congenital malformations. It is our belief that the developing outflow tract, like the postnatal outflow tracts, can readily be described in tripartite fashion, with its distal, intermediate, and proximal components forming the primordiums of the postnatal parts. In this review, we present evidence obtained from developing mice and human hearts to substantiate this notion. We show that the outflow tract, initially with a common lumen, is divided into its aortic and pulmonary components by a combination of an aortopulmonary septum derived from the dorsal wall of the aortic sac and outflow tract cushions that spiral through its intermediate and proximal components. These embryonic septal structures, however, subsequently lose their septal functions as the outflow tracts develop their own discrete walls. We then compare the developmental findings with the anatomic arrangements seen postnatally in the normal human heart. We show how correlations with the embryologic findings permit logical analysis of the congenital lesions involving the outflow tracts

Heterokairy: a significant form of developmental plasticity?

There is a current surge of research interest in the potential role of developmental plasticity in adaptation and evolution. Here we make a case that some of this research effort should explore the adaptive significance of heterokairy, a specific type of plasticity that describes environmentally driven, altered timing of development within a species. This emphasis seems warranted given the pervasive occurrence of heterochrony, altered developmental timing between species, in evolution. We briefly review studies investigating heterochrony within an adaptive context across animal taxa, including examples that explore links between heterokairy and heterochrony. We then outline how sequence heterokairy could be included within the research agenda for developmental plasticity. We suggest that the study of heterokairy may be particularly pertinent in (i) determining the importance of non-adaptive plasticity, and (ii) embedding concepts from comparative embryology such as developmental modularity and disassociation within a developmental plasticity framework