1,287 research outputs found
Identification of Herder-Wild Equid Conflicts in the Great Gobi B Strictly Protected Area in SW Mongolia
In protected areas of Mongolian overgrazing, competition with wild ungulates and poaching are important management concerns. The Great Gobi B Strictly Protected Area (SPA) in SW Mongolia is a re-introduction site for the Przewalskiâs horse (Equus ferus przewalskii), a stronghold of the Asiatic wild ass (Equus hemionus), and remains an important grazing area for seminomadic herders. We show the power of simple inventory and monitoring methods to assess herder-wildlife conflicts, by combining data of: (1) human and livestock demographic data, (2) migration patterns, of semi-nomadic herders, (3) monthly surveys of wild- and domestic ungulates, and (4) observations of re-introduced, free-ranging Przewalskiâs horses. A total of 111 semi-nomadic families with 57,657 head of livestock use the park, mainly in winter. Grazing impact of small stock affects 33% of the park area and is virtually absent in the core area. However, due to the unequal distribution of open water, livestock is present at almost all water points. Seasonal wild horse and wild ass distribution seems to be positively linked to water availability and negatively to herder presence. We documented several cases of wild ungulate poaching, but the magnitude of the problem remains unknown. There are still many knowledge gaps and local people need to be more actively involvement in park management. As this is a rather new approach in Mongolia, we suggest park management to move towards adaptive co-management, accompanied by simple, but sound monitoring and evaluation schemes
Identification of Herder-Wild Equid Conflicts in the Great Gobi B Strictly Protected Area in SW Mongolia
In protected areas of Mongolian overgrazing, competition with wild ungulates and poaching are important management concerns. The Great Gobi B Strictly Protected Area (SPA) in SW Mongolia is a re-introduction site for the Przewalskiâs horse (Equus ferus przewalskii), a stronghold of the Asiatic wild ass (Equus hemionus), and remains an important grazing area for seminomadic herders. We show the power of simple inventory and monitoring methods to assess herder-wildlife conflicts, by combining data of: (1) human and livestock demographic data, (2) migration patterns, of semi-nomadic herders, (3) monthly surveys of wild- and domestic ungulates, and (4) observations of re-introduced, free-ranging Przewalskiâs horses. A total of 111 semi-nomadic families with 57,657 head of livestock use the park, mainly in winter. Grazing impact of small stock affects 33% of the park area and is virtually absent in the core area. However, due to the unequal distribution of open water, livestock is present at almost all water points. Seasonal wild horse and wild ass distribution seems to be positively linked to water availability and negatively to herder presence. We documented several cases of wild ungulate poaching, but the magnitude of the problem remains unknown. There are still many knowledge gaps and local people need to be more actively involvement in park management. As this is a rather new approach in Mongolia, we suggest park management to move towards adaptive co-management, accompanied by simple, but sound monitoring and evaluation schemes
Adsorption behavior and current-voltage characteristics of CdSe nanocrystals on hydrogen-passivated silicon
Global citizenship as the completion of cosmopolitanism
A conception of global citizenship should not be viewed as separate from, or synonymous with, the cosmopolitan moral orientation, but as a primary component of it. Global citizenship is fundamentally concerned with individual
moral requirements in the global frame. Such requirements, framed here as belonging to the category of individual cosmopolitanism, offer guidelines on right action in the context of global human community. They are complementary
to the principles of moral cosmopolitanism â those to be used in assessing the justice of global institutions and practices â that have been emphasised by cosmopolitan political theorists. Considering principles of individual and moral cosmopolitanism together can help to provide greater clarity concerning individual duties in the absence of fully global institutions, as well as clarity on individual obligations of justice in relation to emerging and still-developing trans-state institutions
Geographical variation in serological responses to recombinant Pneumocystis jirovecii major surface glycoprotein antigens
AbstractThe use of recombinant fragments of the major surface glycoprotein (Msg) of Pneumocystis jirovecii has proven useful for studying serological immune responses of blood donors and human immunodeficiency virus (HIV)-positive (HIV+) patients. Here, we have used ELISA to measure antibody titres to Msg fragments (MsgA, MsgB, MsgC1, MsgC3, MsgC8 and MsgC9 in sera isolated in the USA (n=200 and Spain (n=326), to determine whether geographical location affects serological responses to these antigens. Blood donors from Seville exhibited a significantly greater antibody titre to MsgC8, and significantly lower responses to MsgC3 and MsgC9, than did Cincinnati (USA) donors. Spanish blood donors (n=162 also exhibited elevated responses to MsgC1, MsgC8 and MsgC9 as compared with Spanish HIV+ (n=patients. HIV+ patients who had Pneumocystis pneumonia (PcP+) exhibited a higher response to MsgC8 than did HIV+ PcP- patients. These data show that geographical location plays a role in responsiveness to Msg fragments. Additionally, these fragments have utility in differentiating HIV+ PcP and HIV+ PcP+ among patient populations
Comparison of machine learning algorithms in restaurant revenue prediction
In this paper, we address several aspects of applying classical machine learning algorithms to a regression problem. We compare the predictive power to validate our approach on a data about revenue of a large Russian restaurant chain. We pay special attention to solve two problems: data heterogeneity and a high number of correlated features. We describe methods for considering heterogeneityâobservations weighting and estimating models on subsamples. We define a weighting function via Mahalanobis distance in the space of features and show its predictive properties on following methods: ordinary least squares regression, elastic net, support vector regression, and random forest.</p
The interlayer cohesive energy of graphite from thermal desorption of polyaromatic hydrocarbons
We have studied the interaction of polyaromatic hydrocarbons (PAHs) with the
basal plane of graphite using thermal desorption spectroscopy. Desorption
kinetics of benzene, naphthalene, coronene and ovalene at sub-monolayer
coverages yield activation energies of 0.50 eV, 0.85 eV, 1.40 eV and 2.1 eV,
respectively. Benzene and naphthalene follow simple first order desorption
kinetics while coronene and ovalene exhibit fractional order kinetics owing to
the stability of 2-D adsorbate islands up to the desorption temperature.
Pre-exponential frequency factors are found to be in the range
- as obtained from both Falconer--Madix (isothermal
desorption) analysis and Antoine's fit to vapour pressure data. The resulting
binding energy per carbon atom of the PAH is 5 meV and can be identified
with the interlayer cohesive energy of graphite. The resulting cleavage energy
of graphite is ~meV/atom which is considerably larger than previously
reported experimental values.Comment: 8 pages, 4 figures, 2 table
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Index insurance and climate risk management: addressing social equity
Motivation Fair distribution of benefits from index insurance matters. Lack of attention to social equity can reinforce inequalities and undermine the potential index insurance holds as a tool for climate risk management that is also pro-poor.
Purpose The aims are to: (i) examine social equity concerns raised by index insurance in the context of climate risk management; (ii) consider how greater attention can be given to social equity in index insurance initiatives; and (iii) reflect on the policy challenges raised by seeking to take social equity into account as a mechanism for climate risk reduction.
Approach and methods The article draws on learning from the CGIARâs Research Program on Climate Change, Agriculture and Food Security (CCAFS) and presents the cases of the Index Based Livelihoods Insurance (IBLI) and Agriculture and Climate Risk Enterprise Ltd. (ACRE) in East Africa. It proposes a framework for unpacking social equity related to equitable access, procedures, representation and distribution within index insurance schemes
Findings Systematically addressing social equity raises hard policy choices for index insurance initiatives without straightforward solutions. Attention to how benefits and burdens of index insurance are distributed raises the unpalateable truth for development policy that the poorest members of rural society can be excluded. Nevertheless, a focus on social equity may open up opportunities to ensure index insurance is linked to more socially just climate risk management. At the very least, it may prevent index insurance from generating greater inequality. Taking social equity into account thus, shifts the focus from agricultural systems in transition per se to systems with potential to incorporate societal transformation through distributive justice.
Policy implications A framework is presented for unpacking different dimensions of social equity in index insurance schemes. It is intended to facilitate identification of opportunities for building outcomes that are more equitable, with greater potential for inclusion and fairer distribution
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