The evolution of gregariousness in parasitoid wasps

Data are assembled on the clutch-size strategies adopted by extant species of parasitoid wasp. These data are used to reconstruct the history of clutch-size evolution in the group using a series of plausible evolutionary assumptions. Extant families are either entirely solitary, both solitary and gregarious, or else clutch size is unknown. Parsimony analysis suggests that the ancestors of most families were solitary, a result which is robust to different phylogenetic relationships and likely data inadequacies. This implies that solitariness was ubiquitous throughout the initial radiation of the group, and that transitions to gregariousness have subsequently occurred a minimum of 43 times in several, but not all lineages. Current data suggest that species-rich and small-bodied lineages are more likely to have evolved gregariousness, and contain more species with small gregarious brood sizes. I discuss the implications of these data for clutch-size theory

5-Thia-5-Deazaflavin, a 1e − -Transferring Flavin Analog

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/65939/1/j.1432-1033.1979.tb12952.x.pd

Videovoice diaries to understand the perspectives of community health volunteers in Ethiopia: insights from collaborative qualitative research

Background: Audio-visual diary to collect data on daily routines of study participants is relatively new in health systems research. The concept uses participatory research techniques to elicit participants' views, priorities and empower them to take action. Methods: We discuss a collaborative qualitative study conducted by university researchers, rural communities and health managers (Southwest Ethiopia). We used Videovoice to understand the role of community health volunteers as mediators of accessible and responsive Primary Health Care in Ethiopia. Footage is obtained from 30 Health Development Army leaders in 3 diverse districts, over 3–4 months. Following community engagement and training, participants received an encrypted phone with recording capability. They are supported by researchers through regular contacts, to establish trust, support, and reduce social desirability. A co-production workshop with participants and researchers to interpret the findings will be held. Results: Employing Videovoice diaries demonstrates that collaborations involving academic researchers, community members and volunteers (as lay researchers) and managers have considerable benefits as well as challenges. Videovoice shifts power to the participants: they determine what to capture, what is important and how to convey their views and activities. Data is enriched by participant-generated insights into the reasons behind their decisions. Intensive engagement, effective communication and trust are essential in understanding constraints and preferences of their role, and interpreting findings. A multi-disciplinary research team will enhance the analytical process. Discussion: Videovoice can be a useful tool in enabling lay researchers to describe their daily life, better understand their needs, and identify mechanisms for change. The approach can strengthen the immediacy of the research, capturing perceptions within context. Co-production will involve a significant shift in power and emergence of new directions

Developments in cell biology for quantitative immunoelectron microscopy based on thin sections: a review

Quantitative immunoelectron microscopy uses ultrathin sections and gold particle labelling to determine distributions of molecules across cell compartments. Here, we review a portfolio of new methods for comparing labelling distributions between different compartments in one study group (method 1) and between the same compartments in two or more groups (method 2). Specimen samples are selected unbiasedly and then observed and expected distributions of gold particles are estimated and compared by appropriate statistical procedures. The methods can be used to analyse gold label distributed between volume-occupying (organelle) and surface-occupying (membrane) compartments, but in method 1, membranes must be treated as organelles. With method 1, gold counts are combined with stereological estimators of compartment size to determine labelling density (LD). For volume-occupiers, LD can be expressed simply as golds per test point and, for surface-occupiers, as golds per test line intersection. Expected distributions are generated by randomly assigning gold particles to compartments and expressing observed/expected counts as a relative labelling index (RLI). Preferentially-labelled compartments are identified from their RLI values and by Chi-squared analysis of observed and expected distributions. For method 2, the raw gold particle counts distributed between compartments are simply compared across groups by contingency table and Chi-squared analysis. This identifies the main compartments responsible for the differences between group distributions. Finally, we discuss labelling efficiency (the number of gold particles per target molecule) and describe how it can be estimated for volume- or surface-occupiers by combining stereological data with biochemical determinations

Education in the working-class home: modes of learning as revealed by nineteenth-century criminal records

The transmission of knowledge and skills within the working-class household greatly troubled social commentators and social policy experts during the first half of the nineteenth century. To prove theories which related criminality to failures in working-class up-bringing, experts and officials embarked upon an ambitious collection of data on incarcerated criminals at various penal institutions. One such institution was the County Gaol at Ipswich. The exceptionally detailed information that survives on families, literacy, education and apprenticeships of the men, women and children imprisoned there has the potential to transform our understanding of the nature of home schooling (broadly interpreted) amongst the working classes in nineteenth-century England. This article uses data sets from prison registers to chart both the incidence and ‘success’ of instruction in reading and writing within the domestic environment. In the process, it highlights the importance of schooling in working-class families, but also the potentially growing significance of the family in occupational training

Target Suitability and the Crime Drop

The initial focus of Felson’s routine activity perspective was the crime increases of the 1960s and 1970s that were largely a function of inadvertent changes in everyday life (Cohen & Felson, 1979). The rise in crime was an unintended side effect of developments in technology, transportation, and domestic life that were widely welcomed. More money, more consumer goods, more labour-saving devices, more transport, and more employment opportunities for women, for example, all brought benefits to citizens, but they also created more crime opportunities and hence sustained increases in crime

Governing the UN Sustainable Development Goals: Interactions, Infrastructures, and Institutions

Three of the eight Millennium Development Goals (MDGs) concerned health. There is only one health goal in 17 proposed Sustainable Development Goals (SDGs). Critiques of the MDGs included missed opportunities to realise positive interactions between goals. Here we report on an interdisciplinary analytical review of the SDG process, in which experts in different SDG areas identified potential interactions through a series of interdisciplinary workshops. This process generated a framework that reveals potential conflicts and synergies between goals, and how their interactions might be governed

Structural, spectroscopic and catalytic activity studies on glutathione reductase reconstituted with FAD analogues

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/66378/1/j.1432-1033.1991.tb16100.x.pd