Payments for Ecosystem Services: Legal and Institutional Frameworks

Analysis and engagement with partners working on ecosystem services transactions, policies and laws over the past 10 years have demonstrated a clear need to better understand the legal and institutional frameworks that have the potential to promote or hinder the development of payments for ecosystem services (PES) schemes, as well as the complex legal considerations that affect ecosystem services projects. In response, the IUCN Environmental Law Centre and The Katoomba Group have worked on a joint initiative to analyze the legal and institutional frameworks of water-related PES schemes and projects in four Andean countries: South America (Northeastern)-Brazil; Bolivia, Colombia and Peru. It has resulted in this report. Country-based analysts with experience in ecosystem services transactions have developed country and project assessments to define existing and recommend future regulatory and institutional frameworks that enable equitable and long-lasting ecosystem services transactions. Partners from North America (Central America)-Costa Rica; North America-Mexico; Ecuador and the North America-United States provided feedback on the assessments. The country assessments yielded lessons which were used to develop a set of recommendations on legal frameworks, property rights, enabling institutions, PES contracts, and governance issues supporting the future development of PES schemes

Beyond Zero-Sum Environmentalism

Environmental law and environmental protection are often portrayed as requiring trade offs: “jobs versus environment,” “markets versus regulation,” “enforcement versus incentives .” In the summer of 2016, members of the Environmental Law Collaborative gathered to consider how environmentalism and environmental regulation can advance beyond this framing to include new constituents and offer new pathways to tackle the many significant challenges ahead . Months later, the initial activities of the Trump Administration highlighted the use of zero-sum rhetoric, with the appointment of government officials and the issuance of executive orders that indeed seem to view environmental issues as in a zero-sum relationship with jobs or economic progress . In the essays below, the authors explore the meaning and the role of zero-sum environmentalism as a first step in moving beyond it

Upper limits on the strength of periodic gravitational waves from PSR J1939+2134

The first science run of the LIGO and GEO gravitational wave detectors presented the opportunity to test methods of searching for gravitational waves from known pulsars. Here we present new direct upper limits on the strength of waves from the pulsar PSR J1939+2134 using two independent analysis methods, one in the frequency domain using frequentist statistics and one in the time domain using Bayesian inference. Both methods show that the strain amplitude at Earth from this pulsar is less than a few times $10^{-22}$.Comment: 7 pages, 1 figure, to appear in the Proceedings of the 5th Edoardo Amaldi Conference on Gravitational Waves, Tirrenia, Pisa, Italy, 6-11 July 200

Improving the sensitivity to gravitational-wave sources by modifying the input-output optics of advanced interferometers

We study frequency dependent (FD) input-output schemes for signal-recycling interferometers, the baseline design of Advanced LIGO and the current configuration of GEO 600. Complementary to a recent proposal by Harms et al. to use FD input squeezing and ordinary homodyne detection, we explore a scheme which uses ordinary squeezed vacuum, but FD readout. Both schemes, which are sub-optimal among all possible input-output schemes, provide a global noise suppression by the power squeeze factor, while being realizable by using detuned Fabry-Perot cavities as input/output filters. At high frequencies, the two schemes are shown to be equivalent, while at low frequencies our scheme gives better performance than that of Harms et al., and is nearly fully optimal. We then study the sensitivity improvement achievable by these schemes in Advanced LIGO era (with 30-m filter cavities and current estimates of filter-mirror losses and thermal noise), for neutron star binary inspirals, and for narrowband GW sources such as low-mass X-ray binaries and known radio pulsars. Optical losses are shown to be a major obstacle for the actual implementation of these techniques in Advanced LIGO. On time scales of third-generation interferometers, like EURO/LIGO-III (~2012), with kilometer-scale filter cavities, a signal-recycling interferometer with the FD readout scheme explored in this paper can have performances comparable to existing proposals. [abridged]Comment: Figs. 9 and 12 corrected; Appendix added for narrowband data analysi

A comparison of two notations for process communication

This paper compares the mechanisms for process communication, synchronisation and non-determinism in recent language proposals by Hoare and Brinch Hansen, by both qualitative and quantitative analyses. A significant variation in effectiveness with program class is shown

Beyond Zero-Sum Environmentalism

Environmental law and environmental protection are often portrayed as requiring trade offs: “jobs versus environment,” “markets versus regulation,” “enforcement versus incentives .” In the summer of 2016, members of the Environmental Law Collaborative gathered to consider how environmentalism and environmental regulation can advance beyond this framing to include new constituents and offer new pathways to tackle the many significant challenges ahead . Months later, the initial activities of the Trump Administration highlighted the use of zero-sum rhetoric, with the appointment of government officials and the issuance of executive orders that indeed seem to view environmental issues as in a zero-sum relationship with jobs or economic progress . In the essays below, the authors explore the meaning and the role of zero-sum environmentalism as a first step in moving beyond it