Multicolor printing plate joining

An upper plate having ink flow channels and a lower plate having a multicolored pattern are joined. The joining is accomplished without clogging any ink flow paths. A pattern having different colored parts and apertures is formed in a lower plate. Ink flow channels each having respective ink input ports are formed in an upper plate. The ink flow channels are coated with solder mask and the bottom of the upper plate is then coated with solder. The upper and lower plates are pressed together at from 2 to 5 psi and heated to a temperature of from 295 F to 750 F or enough to melt the solder. After the plates have cooled and the pressure is released, the solder mask is removed from the interior passageways by means of a liquid solvent

A Comparative Analysis of Public and Private Political Risk Insurance Policies with Strategic Applications for Risk Mitigation

Generation of non-classical light is both of fundamental interest and a common condition for quantum information applications (QIA). One feasible type of single photon emitter for QIA is based on semiconductor quantum dots (QDs), due to their atomic-like energy structure and their possibility to be integrated with other semiconductor devices on the same chip. Sitecontrolled QDs with highly linear polarized emission are a prerequisite for certain QIA and a close to room temperature operation is demanded for widespread applications. III-nitride QD can have the deep connement potentials needed for high temperature operation, and the demonstration of single photon emission at room temperature was recently reported for a GaN QD [Nano Lett. 14, 982 (2014)]. Asymmetric III-nitride QD emits light with a high degree of linear polarization. To make site-controlled nitride-based QDs a promising approach is to deposit a thin layer of InGaN on top of hexagonal GaN micropyramids. QDs formed on the apex of the pyramids grown with this approach have been shown to exhibit single and sharp InGaN related emission lines with a high degree of linear polarization [Nano Lett. 11, 2415 (2011)]. A simple elongation of the pyramid base gives control of the polarization direction [Light: Sci. Appl. 3, e139 (2014)]. The work presented in this thesis deals with time correlation measurements, to measure, for the rst time, the single photon properties of these pyramidal QDs. A time correlated single photon spectroscopy (TCSPS) setup was assembled, tested and used to perform measurements on these pyramidal QDs. The TCSPS apparatus measures the time dierences between subsequent photons emitted from the sample. In the spectrally ltered light of one emission line in the emission spectra, e.g. exciton emission, of a QD two or more photons cannot be emitted simultaneously, i.e. the photons are sent out one by one. A histogram of the ensemble of measured time dierences (~106 events) will then for the ideal case have no events for τ = 0, and very few for close to zero. This histogram, when normalized, is under certain conditions equal to the second order coherence function g(2)(τ ). In reality, however, there are photons coming from other sources close to the QD, i.e. background emission, that reach the detector and reduce the dip in the correlation histogram for small τ. There is also an statistical uncertainty in the measured time dierences and nally the nite bin width used in the histogram that deteriorate the measured correlation function. To understand the in uence on g(2)(τ) from background emission, instrument response function and the bin width, on the measurement on excitonic emission, simulations and calculations were made. The crucial variables were, for our samples and setup, the level of the background emission and the instrument response function. A post growth process was developed to cover the lower parts of the pyramid sides as well as the area between the pyramids with a metal lm, to reduce the background emission. This reduces the background emission and largely improves the relative QD signal. As a result, signicant improved single photon characteristics were demonstrated. A measurement of the second order coherence function for the excitonic autocorrelation at a temperature of 12 K, gave for zero time delay ( = 0) a value of g(2)(0) = 0.24 and the residual value of the second order coherence function (0.24) could be in full explained by the three variables, background emission, instrument response function and bin width. The g(2)(0) value for correlation measurements at higher temperatures of 50 K and 80 K is also fully explained by the three variables, showing that the emission from the QD itself is ideal up to 80 K. This result underlines the great potential of these site controlled pyramidal dots as sources of fast polarized single photon emission, and provides the rst rigorous evidence of InGaN quantum dot formation on hexagonal GaN pyramids. We also show the rst proof of biexcitonic emission in this pyramidal QDs

Achieving World Trade Organization Compliance for Export Processing Zones While Maintaining Economic Competitiveness for Developing Countries

Export processing zones (EPZs) are statutorily created investment parks that developing countries establish to attract foreign investment in exchange for government-granted fiscal incentives. At their core, EPZs are a quid pro quo between host governments and investor companies: in exchange for the promise of job creation, technological transfer, economic development, and compliance with export performance requirements, investor companies receive substantial fiscal incentives, such as tax and tariff exemptions. Most EPZ statutes are inconsistent with Article 3.1(a) of the World Trade Organization\u27s Agreement on Subsidies and Countervailing Measures (SCM Agreement) because EPZ incentives qualify as prohibited export subsidies. Fortunately, many developing countries have received exemptions from this prohibition to maintain their EPZ systems. The exemptions, however, are set to permanently expire for many countries on December 31, 2015, spurring the need for EPZ reform. This Note proposes a framework for achieving WTO-compliance for EPZ statutes by conditioning EPZ incentives on an investor company\u27s implementation of standards of corporate social responsibility. This proposal will permit developing countries to maintain fiscal incentives—thus helping preserve their economic competitiveness as attractive destinations for foreign investment—while also offsetting potential harm that the mandatory elimination of EPZ export requirements may cause to developing-country industries

Regular and irregular geodesics on spherical harmonic surfaces

The behavior of geodesic curves on even seemingly simple surfaces can be surprisingly complex. In this paper we use the Hamiltonian formulation of the geodesic equations to analyze their integrability properties. In particular, we examine the behavior of geodesics on surfaces defined by the spherical harmonics. Using the Morales-Ramis theorem and Kovacic algorithm we are able to prove that the geodesic equations on all surfaces defined by the sectoral harmonics are not integrable, and we use Poincar\'{e} sections to demonstrate the breakdown of regular motion.Comment: Accepted Physica D : Nonlinear Phenomena; 25 pages, 3 figure

Cost structures and the movement of the innovation locus: a derived network approach

We consider the problem faced by a manager commissioning an innovative product requiring multi-stage sequenced innovation, when innovating agents have different costs and information transfer is expensive. We specify their optimisation problem and present a polynomial time solution method. We use the method to consider how cost networks influence centre choice switching by solving a series of stochastically generated networks and running logistic regressions on switching frequencies. The effect of expected innovation costs and its standard deviation are shown to be distribution dependent. Expected transfer costs are shown to have an unambiguous dampening effect on the amount of centre switching. Network size sensitivity is considered. Transfer costs are found to be far more influential on switching than innovation costs in a symmetric model. Cost trends that leave average costs unchanged are shown typically to have a significant non-zero effect on switching. A cost structure is introduced to model dichotomous expertise and to link innovation and transfer costs, and agent switches shown to be highly sensitive to an underlying learning cost measure. We then consider the set of sequences constrained to reach each possible final stage agent to reflect managerial specificity. Distributional parameters are found to have a dampened effect on within series changes, and their effect on cross series diversity is demonstrated to be opposite to that on within series changes.Innovation; locus of innovation; technology; transfer costs; network; simulation; switching

Improved high-temperature-strength nickel-base superalloy

Nickel-base superalloy has a strength of 20,000 psi at 2,200 degrees F, approximately double the strength of the strongest available cast nickel-base alloys. It is not subject to the formation of embrittling phases upon long time exposure at intermediate temperatures

High strength nickel base alloy, WAZ-16, for applications up to 2200 F

Alloy product is high strength, high temperature nickel base material with higher incipient melting temperature than all known nickel base alloys. It is microstructurally stable and has high impact resistance both before and after prolonged thermal exposure. It contains relatively few alloying constitutents and low content of expensive and rare metals

High strength nickel-base alloy with improved oxidation resistance up to 2200 degrees F

Modifying the chemistry of the NASA TAZ-8 alloy and utilizing vacuum melting techniques provides a high strength, workable nickel base superalloy with improved oxidation resistance for use up to 2200 degrees F

Nickel-base alloy containing Mo-W-Al-Cr- Ta-Zr-C-Nb-B Patent

Nickel base alloy with resistance to oxidation at high temperatures and superior stress-rupture propertie

Nickel base alloy

A nickel base superalloy for use at temperatures of 2000 F (1095 C) to 2200 F (1205 C) was developed for use as stator vane material in advanced gas turbine engines. The alloy has a nominal composition in weight percent of 16 tungsten, 7 aluminum, 1 molybdenum, 2 columbium, 0.3 zirconium, 0.2 carbon and the balance nickel