Regional growth, national membership and European structural funds : an empirical appraisal

regional development

Stagnation region gas film cooling: Effects of dimensionless coolant temperature

An experimental investigation was conducted to mode the film cooling performance for a turbine vane leading edge using the stagnation region of a cylinder in cross flow. Experiments were conducted with a single row of spanwise angled (25 deg) coolant holes for a range of the coolant blowing ratio and dimensionless coolant temperature with free stream-to-wall temperature ratio approximately 1.7 and Re sub D = 90000. the cylindrical test surface was instrumented with miniature heat flux gages and wall thermocouples to determine the percentage reduction in the Stanton number as a function of the distance downstream from injection (x/d sub 0) and the location between adjacent holes (z/S). Data from local heat flux measurements are presented for injection from a single row located at 5 deg, 22.9 deg, 40.8 deg, from stagnation using a hole spacing ratio of S/d = 5. The film coolant was injected with T sub c T sub w with a dimensionless coolant temperature in the range 1.18 or equal to theta sub c or equal to 1.56. The data for local Stanton Number Reduction (SNR) showed a significant increase in SNR as theta sub c was increased above 1.0

Les "Propos Et Anecdotes" De Jean Gione, Ou Un Heureux Art De Vivre

Paper by Maurice A. Lecuye

A National Security Staff for the 21st Century

View the Executive SummaryOur legacy 1947/1989 national security system is unsuited for the dynamic and complex global security environment that has developed since the end of the Cold War. Over time, the National Security Council has evolved from the very limited advisory group initially imagined by President Truman to that of a vast network of interagency groups that were developed since 1989. These interagency groups view themselves as deeply involved in integrating policy development, crisis management, and staffing for the President. However, the National Security Staff (NSS) and the national security system are relics of the industrial age—vertical stovepipes—in an age that demands that the management of the national security system be conducted at the strategic level. What is required is a true national security strategy based on ends, ways, and means; the alignment of resources with integrated national security missions; and the assessment and accountability of management functions that should be performed by a properly resourced NSS unburdened from the urgency of the 24/7 news cycle. The President’s National Security Strategy of May 2010 calls for reform in many of these areas. Section 1072 of the 2012 Defense Authorization Act calls upon the President to outline the changes and resources that are needed in both the executive branch and in Congress to implement his national security strategy. The President’s response to this legislative mandate can and should be the first step in a strategic partnership for transforming our national security system, in both the executive branch and the Congress, to that of a system that can meet and anticipate the challenges and opportunities for ensuring our security and well-being.https://press.armywarcollege.edu/monographs/1535/thumbnail.jp

Simplified Metrics Calculation for Soft Bit Detection in DVB-T2

The constellation rotation and cyclic quadrature component delay (RQD) technique has been adopted in the second generation terrestrial digital video broadcasting (DVB-T2) standard. It improves the system performance under severe propagation conditions, but introduces serious complexity problems in the hardware implementation of the detection process. In this paper, we present a simplified scheme that greatly reduces the complexity of the demapper by simplifying the soft bit metrics computation having a negligible overall system performance loss

From supported membranes to tethered vesicles: lipid bilayers destabilisation at the main transition

We report results concerning the destabilisation of supported phospholipid bilayers in a well-defined geometry. When heating up supported phospholipid membranes deposited on highly hydrophilic glass slides from room temperature (i.e. with lipids in the gel phase), unbinding was observed around the main gel to fluid transition temperature of the lipids. It lead to the formation of relatively monodisperse vesicles, of which most remained tethered to the supported bilayer. We interpret these observations in terms of a sharp decrease of the bending rigidity modulus $\kappa$ in the transition region, combined with a weak initial adhesion energy. On the basis of scaling arguments, we show that our experimental findings are consistent with this hypothesis.Comment: 11 pages, 3 figure