In situ synchrotron based x-ray techniques as monitoring tools for atomic layer deposition

A

Understanding today’s Kurdish movement: Leftist heritage, martyrdom, democracy and gender

Though an important political actor in Turkey, and also in Syria, Iraq and Iran, there are few detailed socio-political accounts of the Kurdish movement’s main political actor in Turkey, the Partiya Karkêren Kurdistan (Kurdistan Workers’ Party or PKK). This may be considered an important demerit of not only Kurdish and Turkish Studies but social and political sciences in general. In this special issue, we aim to address what may be less a gap in the literature than an academic blind-spot. Wit..

Geometric versus geographic models for the estimation of an FTTH deployment

Optical access networks provide a future proof platform for a wide range of services, and today, several operators are deploying fibre to the home (FTTH) networks. Installing an FTTH infrastructure, however, involves very high investment cost. Therefore, a good estimation of the investment cost is important for building a successful business strategy and, consequently, to speed up the FTTH penetration. In this paper, for calculating the amount of cable and fibre in the outside plant together with the associated civil works, and the number of required network elements, two different approaches are investigated: (1) geometric modelling of the fibre plant based on approximate mathematical models and (2) geographic modelling of the fibre plant based on map-based geospatial data. The results obtained from these two approaches can then be used as input for preliminary investment cost calculations and/or techno-economic evaluations. Compared to more complex and accurate geographic modelling, we verify that especially with uneven population density and irregular street system, simple geometric models do not provide accurate results. However, if no geospatial data is available or a fast calculation is desired for a first estimation, geometric models definitely have their relevance. Based on the case studies presented in this paper, we propose some important guidelines to improve the accuracy of the geometric models by eliminating their main distortion factors

Geographic model for cost estimation of FTTH deployment: overcoming inaccuracy in uneven-populated areas

A geographic approach is proposed to accurately estimate the cost of FTTH networks. In contrast to the existing geometric models, our model can efficiently avoid inaccurate estimation of the fibre infrastructure cost in the uneven-populated areas

The Unintended Consequences of a European Neighbourhood Policy without Russia

After Russia’s retreat from the European Neighbourhood Policy, the EU’s policy towards its eastern neighbours was split up. The internal unintended consequence of the EU’s choice to leave its policy unaltered was a tension between the objective of privileged relations with ENP countries and a promise to recognise the interests of Russia as an equal partner. Externally, the unintended outcome was that this fostered two opposing strategic environments: a cooperative one for the EaP and a competitive one with Russia. In terms of the management of unintended consequences, the EU has actively sought to reinforce its normative hegemony towards EaP countries, while at the same time mitigating certain negative unintended effects

Modelling for Sustainable Development: New Decisions for a New Age

This book outlines how next-generation models need to integrate social and environmental components in government and corporate decision-making. Traditionally, these models have focused on profits and taxes, but to achieve the UN’s Sustainable Development Goals, they need to take a more holistic view. The book builds on the expanding practices of modelling complex decision making requirements and indicators. It considers the challenges of decision making in the face of incomplete and sometimes inaccurate information, the role of multiple stakeholders, and the capacity of governments and others to use models effectively.https://scholarship.law.columbia.edu/sustainable_investment_books/1007/thumbnail.jp

New data on the Silurian-Devonian paleontology and biostratigraphy of Bolivia

P. 269-314In order to precisely establish the bio- and chronostratigraphic position of several levels of the Silurian–Devonian succession of Bolivia, with respect to the International Time Scale, additional Silurian and Devonian localities belonging to the Eastern Cordillera and the Interandean Zone areas have been recently revised and sampled, both for macrofossils and palynomorphs. Specifically, the localities are Ñuñumayani, and Muruhuta from the late Silurian–early Devonian time interval. Correlations with other fossiliferous localities are discussed, namely Huacallani and Rumicorral.S

Lowering IceCube’s energy threshold for point source searches in the southern sky

Observation of a point source of astrophysical neutrinos would be a "smoking gun" signature of a cosmic-ray accelerator. While IceCube has recently discovered a diffuse flux of astrophysical neutrinos, no localized point source has been observed. Previous IceCube searches for point sources in the southern sky were restricted by either an energy threshold above a few hundred TeV or poor neutrino angular resolution. Here we present a search for southern sky point sources with greatly improved sensitivities to neutrinos with energies below 100 TeV. By selecting charged-current nu(mu) interacting inside the detector, we reduce the atmospheric background while retaining efficiency for astrophysical neutrino-induced events reconstructed with sub-degree angular resolution. The new event sample covers three years of detector data and leads to a factor of 10 improvement in sensitivity to point sources emitting below 100 TeV in the southern sky. No statistically significant evidence of point sources was found, and upper limits are set on neutrino emission from individual sources. A posteriori analysis of the highest-energy (similar to 100 TeV) starting event in the sample found that this event alone represents a 2.8 sigma deviation from the hypothesis that the data consists only of atmospheric background