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Bluetooth Low Energy extends the Bluetooth standard in version 4.0 for ultra-low energy applications through the extensive usage of low-power sleeping periods, which inherently difficult in frequency hopping technologies. This paper gives an introduction into the specifics of the Bluetooth Low Energy protocol, shows a sample implementation, where an embedded device is controlled by an Android smart phone, and shows the results of timing and current consumption measurements.
The Raman spectra from the chemical compounds toluene and cyclohexane obtained using a Fourier Transform (FT)-Raman spectrometer prototype have been contrasted with the Raman spectra of these same materials collected with two different commercial FT-Raman devices. The FT-Raman spectrometer consist of a Michelson interferometer, a self-designed photon counter and a reference photo-detector. The evaluation methodology of the spectral information, contrary to the commercial devices that commonly use the zero-crossing method, is carried out by re-sampling the Raman scattering and by accurately extracting the optical path information of the Michelson interferometer. The FTRaman arrangement has been built using conventional parts without disregarding the spectral frequency precision that usually such a FTRaman instruments deliver. No additional complex hardware components or costly software modules have been included in this FT-Raman device. The main Raman lines from the spectra obtained with the three FT-Raman devices have been compared with the Raman lines from the standard Raman spectra of these two materials. The values obtained using the FT-Raman spectrometer prototype have shown a frequency accuracy comparable to that obtained with the commercial devices without facing the need for a large investment. Although the proposed FT-Raman prototype cannot be directly compared to the last generation of FT-Raman spectrometers from the commercial manufacturers, such a device could give an opportunity to users that require high frequency precision in their spectral analysis and are provided with rather scarce resources.
Creating growth through trade is an important part of the policy approach of many economies. For decades, many member countries of the Organisation for Economic Co-operation and Development (OECD) have cooperated in a fair competition for the benefit of their national exporters. The countries’ official export credit agencies (ECAs) have established and jointly improved rules and regulations for export credit and political risk insurance. However, new players such as China, Russia or other fast developing countries have now joined the list of top exporting nations. As these countries have established their own ECAs, there is a need to introduce rules and regulations on global standards for financial terms as well as truly international norms ensuring ‘ethical’ trading behaviour.
But how will government support for foreign trade look like in the future? Will global standards for export credit and political risk insurance become reality by 2020? And how will strict rules and regulations for officially supported export credits and FDI regarding ethics, human rights and the environment impact growth through trade in general, or exporters in particular? These are questions addressed by the thirty eight contributions to Global Policy’s third eBook entitled ‘The Future of Foreign Trade Support – Setting Global Standards for Export Credit and Political Risk Insurance’, guest edited by Andreas Klasen and Fiona Bannert.