Designing touch-enabled electronic flight bags in SAR helicopter operations

In order to benefit from potential reduced operational costs and crew workload airlines are increasingly interested in touchscreen-based Electronic Flight Bags (EFB). This paper focuses on the specific domain of Search and Rescue (SAR) Helicopters. A first set of results aiming to explore and understand potential benefits and challenges of an EFB in a SAR environment will be presented. A review of related work, operational observations and interviews with pilots were conducted to understand and specify the use context. Digital Human Modelling (DHM) software was used to determine physical constraints of an EFB in this type of flight deck. A scenario was developed which will be used in future to define features, content and functionality that a SAR pilot may wish to see in an EFB. Developed initial interface design guidelines are presented

All-optical switching and strong coupling using tunable whispering-gallery-mode microresonators

We review our recent work on tunable, ultrahigh quality factor whispering-gallery-mode bottle microresonators and highlight their applications in nonlinear optics and in quantum optics experiments. Our resonators combine ultra-high quality factors of up to Q = 3.6 \times 10^8, a small mode volume, and near-lossless fiber coupling, with a simple and customizable mode structure enabling full tunability. We study, theoretically and experimentally, nonlinear all-optical switching via the Kerr effect when the resonator is operated in an add-drop configuration. This allows us to optically route a single-wavelength cw optical signal between two fiber ports with high efficiency. Finally, we report on progress towards strong coupling of single rubidium atoms to an ultra-high Q mode of an actively stabilized bottle microresonator.Comment: 20 pages, 24 figures. Accepted for publication in Applied Physics B. Changes according to referee suggestions: minor corrections to some figures and captions, clarification of some points in the text, added references, added new paragraph with results on atom-resonator interactio

Determinants of the Trilemma Policy Combination

We present a theoretical framework for policy making based on the "impossible trinity" or the "trilemma" hypothesis. A simple optimization model shows that placing more weight in terms of preference for each of the three open macroeconomic policies - exchange rate stability, financial market openness, and monetary policy independence - contributes to a higher level of achievement in that particular policy. We then develop the first empirical framework in the literature to investigate the joint determination of the triad open macroeconomic policies based on the trilemma hypothesis. Specifically, we estimate the three policy indexes under the trilemma constraint that they must add up to a constant. By applying the seemingly unrelated regression (SUR) estimation method and employing other robustness checks, we demonstrate that simple economic and structural fundamentals determine the trilemma policy combinations. Last, we examine how deviations from the "optimal" trilemma policy combinations evolve around the time of a financial crisis. Policy combinations seem to violate the trilemma constraint when a currency, banking, or debt crisis breaks out. These findings suggest that deviations from the trilemma hypothesis would create policy stress, which would have to manifest itself in a crisis unless policy makers adjust the policy combination in a way consistent with the trilemma constraint

External Debt and Growth

This paper assesses the non linear impact of external debt on growth using panel data for 93�developing countries. The estimates support a non-linear, hump-shaped relationship between debt and growth, especially when the debt burden is measured relative to GDP. For a country with average indebtedness, doubling the debt ratio reduces growth by a third to a half percentage point after controlling for endogeneity. Our findings also suggest that the average impact of debt becomes negative at about 160�170 percent of exports or 35�40 percent of GDP and the marginal impact of debt at about half of these value

Contribution to the study of titanium nitride and carbide coatings obtained by physical vapour deposition (P.V.D.) on 6-5-2 steel tools

Translated from French (Traitement Thermique Jun/Jul 1984 no. 184 p. 25-30)Available from British Library Document Supply Centre- DSC:9091.9F(RISLEY-Trans--5220)T / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo