3,524 research outputs found
Adaptive Governance: An Introduction and Implications for Public Policy
Adaptive governance is a concept from institutional theory that deals with the evolution of institutions for the management of shared assets, particularly common pool resources and other forms of natural capital. This paper is the first of a set of four papers on adaptive governance, providing a brief overview of the history of the concept, the distinguishing features of the literature, and key insights provided for economists and policy advisors. We argue that adaptive governance provides an interesting lens for examining the political economy of policy responses akin to the concept of market failure within economics, but applied to wider processes of social learning and collective choice, including collective choices about the scope and structure of institutions that govern lower level choices by individuals and organizations.adaptive governance, public policy, common pool resources, natural resource management, wicked problems, Institutional and Behavioral Economics,
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An Antiviral Response Unleashed: Deciphering the Relationship between Shiftless and RNA Granules during KSHV Infection
Herpesviruses persist as a parasitic actor among many species. These viral agents can rapidly seize control over host cells by influencing global gene expression. Through a process known as host shutoff, herpesviruses cause a widespread degradation event of host transcripts within the cytoplasm. Specifically, Kaposi Sarcoma associated herpesvirus (KSHV) encodes for an endoribonuclease, termed SOX, that orchestrates this manipulation of gene expression. We and others have discovered certain transcripts that escape this fate; we suggest that this is an active escape, where transcripts have 3â UTR elements that disallow SOX cleavage. One of the escapees that has been found is that of C19ORF66, which encodes the protein known as Shiftless (SHFL). SHFL is a broadly characterized antiviral host factor that may also be stimulated via interferons. Through our investigation of SHFL during KSHV infection, we have also observed this host factor acting in opposition to viral agents. We have also uncovered that SHFL expression causes the loss of P-bodies, a constitutively present RNA granule. We postulate that SHFL ability to regulate P-bodies directly contributes towards its antiviral capacity and serves as a rare example of host-P-body regulation. Through further characterization of this pro-host factor, we hope to provide a deeper understanding of sub-cellular mechanisms and host gene expression during KSHV infection
Indexing Attentional Focus: A Critical Neural Element of Athletic Performance
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The environment and host haloes of the brightest z~6 Lyman-break galaxies
By studying the large-scale structure of the bright high-redshift Lyman-break
galaxy (LBG) population it is possible to gain an insight into the role of
environment in galaxy formation physics in the early Universe. We measure the
clustering of a sample of bright (-22.7<M_UV<-21.125) LBGs at z~6 and use a
halo occupation distribution (HOD) model to measure their typical halo masses.
We find that the clustering amplitude and corresponding HOD fits suggests that
these sources are highly biased (b~8) objects in the densest regions of the
high-redshift Universe. Coupled with the observed rapid evolution of the number
density of these objects, our results suggest that the shape of high luminosity
end of the luminosity function is related to feedback processes or dust
obscuration in the early Universe - as opposed to a scenario where these
sources are predominantly rare instances of the much more numerous M_UV ~ -19
population of galaxies caught in a particularly vigorous period of star
formation. There is a slight tension between the number densities and
clustering measurements, which we interpret this as a signal that a refinement
of the model halo bias relation at high redshifts or the incorporation of
quasi-linear effects may be needed for future attempts at modelling the
clustering and number counts. Finally, the difference in number density between
the fields (UltraVISTA has a surface density ~1.8 times greater than UDS) is
shown to be consistent with the cosmic variance implied by the clustering
measurements.Comment: 19 pages, 8 figures, accepted MNRAS 23rd March 201
A flexible flight display research system using a ground-based interactive graphics terminal
Requirements and research areas for the air transportation system of the 1980 to 1990's were reviewed briefly to establish the need for a flexible flight display generation research tool. Specific display capabilities required by aeronautical researchers are listed and a conceptual system for providing these capabilities is described. The conceptual system uses a ground-based interactive graphics terminal driven by real-time radar and telemetry data to generate dynamic, experimental flight displays. These displays are scan converted to television format, processed, and transmitted to the cockpits of evaluation aircraft. The attendant advantages of a Flight Display Research System (FDRS) designed to employ this concept are presented. The detailed implementation of an FDRS is described. The basic characteristics of the interactive graphics terminal and supporting display electronic subsystems are presented and the resulting system capability is summarized. Finally, the system status and utilization are reviewed
A qualitative pilot study of food insecurity among Maasai women in Tanzania
Background: Food insecurity is an ongoing threat in rural sub-Saharan Africa and is complicated by cultural practices, the rise of chronicconditions such as HIV and land use availability. In order to develop a successful food security intervention program, it is important to be informed of the realities and needs of the target population. The purpose of this study was to pilot a qualitative method to understand food insecurity based on the lived experience of women of the Maasai population in the Ngorongoro Conservation Area of Tanzania.Methods: Short semi-structured qualitative interviews with 4 Maasai women.Results: Food insecurity was present in the Maasai community: the participants revealed that they did not always have access to safe and nutritious food that met the needs of themselves and their families. Themes that emerged from the data fell into three categories: Current practices (food sources, planning for enough, food preparation, and food preservation), food Insecurity (lack of food, emotions, coping strategies, and possible solutions), and division (co-wives, food distribution, and community relationships).Conclusion:This pilot study suggested the presence of food insecurity in the Maasai community. Larger sample studies are needed to clarify the extent and severity of food insecurity among this population. Having a detailed understanding of the various aspects of the food insecurity lived experience could inform a targeted intervention program.Key words: Food security, food supply, human rights, qualitative research, Eastern Afric
The clustering and bias of radio-selected AGN and star-forming galaxies in the COSMOS field
Dark matter haloes in which galaxies reside are likely to have a significant
impact on their evolution. We investigate the link between dark matter haloes
and their constituent galaxies by measuring the angular two-point correlation
function of radio sources, using recently released 3 GHz imaging over $\sim 2 \
\mathrm{deg}^2z<1b = 1.5
^{+0.1}_{-0.2}z=0.62b = 2.1\pm 0.2b =
2.9 \pm 0.3b = 1.8^{+0.4}_{-0.5}z \sim 0.7M_{h} \sim 3-4
\times 10^{13}h^{-1}_{\odot}M_{h} \sim 1-2 \times
10^{13}h^{-1}_{\odot}z \ge 1z<1$.Comment: 20 pages, 10 figures, 1 table, accepted by MNRA
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