Employment from Mining and Agricultural Investments: How Much Myth, How Much Reality?

Employment creation is often seen as a key benefit of investment in natural resources. However, this benefit sometimes falls short: job estimates may be inflated, governmental policies may fail to maximize employment generation, and, in some cases, investments may lead to net livelihood losses. A more thorough examination of employment tied to mining and agricultural investments is thus useful for assessing whether and how employment from natural resource investments contributes to sustainable economic development – a particularly timely topic as countries consider how they will achieve the Sustainable Development Goals adopted in 2015. This report aims to clarify the processes and impacts of job creation driven by large-scale mining and agricultural investments, and to suggest how policies can improve employment outcomes. A deeper understanding of the topic helps policymakers, citizens, and others assess employment claims made in the context of investment in mining or large-scale agricultural projects. It also presents governments with a difficult task: developing approaches that are aligned with best practices but fine-tuned to local contexts, and which improve the direct, indirect, and induced job creation outcomes of investments while addressing the disparate needs and expectations of both investors and citizens. Although complicated, such efforts are important for ensuring that the expected employment benefits of such investments do indeed materialize

Parsing the myth and reality of employment creation through resource investments

Employment creation is often claimed as an important benefit of investment in mining and large-scale agriculture. A closer look at employment tied to these investments provides greater clarity on the challenges of estimating employment effects and optimizing employment outcomes through targeted policies

Independent ferroelectric contributions and rare-earth-induced polarization reversal in multiferroic TbMn2O5

Three independent contributions to the magnetically induced spontaneous polarization of multiferroic TbMn2O5 are uniquely separated by optical second harmonic generation and an analysis in terms of Landau theory. Two of them are related to the magnetic Mn3+/4+ order and are independent of applied fields of up to 7 T. The third contribution is related to the long-range antiferromagnetic Tb3+ order. It shows a drastic decrease upon the application of a magnetic field and mediates the change of sign of the spontaneous electric polarization in TbMn2O5. The close relationship between the rare-earth long-range order and the non-linear optical properties points to isotropic Tb-Tb exchange and oxygen spin polarization as mechanism for this rare-earth induced ferroelectricity.Comment: 8 pages, 5 figure

Ground state representations of loop algebras

Let g be a simple Lie algebra, Lg be the loop algebra of g. Fixing a point in S^1 and identifying the real line with the punctured circle, we consider the subalgebra Sg of Lg of rapidly decreasing elements on R. We classify the translation-invariant 2-cocycles on Sg. We show that the ground state representation of Sg is unique for each cocycle. These ground states correspond precisely to the vacuum representations of Lg.Comment: 22 pages, no figur

Ensuring Economic Viability and Sustainability of Coffee Production

Coffee, the world’s favorite beverage, provides livelihoods for at least 60 million people across dozens of countries. Yet this beloved drink is experiencing a sustainability crisis. A sustained decline in world coffee prices has squeezed coffee producers, and thrown a tremendous number of producers below the global extreme poverty line. This report presents our research into sustainability within the coffee sector, including the results of our analytical and empirical modeling, and provides several recommendations

Ensuring Economic Viability & Sustainability of Coffee Production

For this report, we developed a new economic model of supply and demand in the coffee sector, which forms the core of our quantitative analysis. The model simulates a global price equilibrium between 136 consuming countries and the farming decisions in 3024 coffee-growing regions. Our report is also grounded in extensive desk research and at least 72 interviews with 86 people, representing producers, small and large companies, civil society organizations and multi-stakeholder platforms, research institutions and academics, and others. It has also been strengthened by feedback we have received through other channels, including via email and particularly in response to public presentations at events organized by the ICO and the European Coffee Federation in June 2019 and by the World Coffee Producers Forum in July 2019

通过资源投资分析就业创造的现实与误区

Employment creation is often claimed as an important benefit of investment in mining and large-scale agriculture. A closer look at employment tied to these investments provides greater clarity on the challenges of estimating employment effects and optimizing employment outcomes through targeted policies

Dynamical differential equations compatible with rational qKZ equations

For the Lie algebra $gl_N$ we introduce a system of differential operators called the dynamical operators. We prove that the dynamical differential operators commute with the $gl_N$ rational quantized Knizhnik-Zamolodchikov difference operators. We describe the transformations of the dynamical operators under the natural action of the $gl_N$ Weyl group.Comment: 7 pages, AmsLaTe

Photocatalytic ozonation under visible light for the remediation of water effluents and its integration with an electro-membrane bioreactor

Photocatalysis and photocatalytic ozonation under visible light have been applied for the purification of a complex aqueous matrix such as the grey water of Masdar City (UAE), by using N-doped brookite-rutile catalysts. Preliminary runs on 4-nitrophenol (4-NP) solutions allowed to test the reaction system in the presence of a model pollutant and to afford the relevant kinetic parameters of the process. Subsequently, the remediation of grey water effluent has been evaluated in terms of the reduction of total organic carbon (TOC) and bacterial counts. The concentration of the most abundant inorganic ionic species in the effluent has been also monitored during reaction. Photocatalytic ozonation under visible light allowed to reduce the TOC content of the grey water by ca. 60% in the optimized experimental conditions and to reduce the total bacterial count by ca. 97%. The extent of TOC mineralization reached ca. 80% when the photocatalytic ozonation occurred downstream to a preliminary electro-membrane bioreactor (eMBR). Coupling the two processes enhanced the global efficiency. In fact, the eMBR treatment lowered the turbidity and the organic load of the effluent entering the photocatalytic ozonation treatment, which in turn enhanced the extent of purification and disinfection

Regge and Okamoto symmetries

We will relate the surprising Regge symmetry of the Racah-Wigner 6j symbols to the surprising Okamoto symmetry of the Painleve VI differential equation. This then presents the opportunity to give a conceptual derivation of the Regge symmetry, as the representation theoretic analogue of the author's previous derivation of the Okamoto symmetry. [The resulting derivation is quite simple, so it would be surprising if it has not been previously observed. Any references would be appreciated!]Comment: 14 page