INVESTIGATION OF ADHESION AND COHESION OF METALS IN ULTRAHIGH VACUUM.

Adhesion and cohesion of metals in ultrahigh vacuu

How redeployable are patent assets? Evidence from failed startups

Entrepreneurial firms are important sources of patented inventions. Yet little is known about what happens to patents "released" to the market when startups fail. This study provides a first look at the frequency and speed with which patents originating from failed startups are redeployed to new owners, and whether the value of patents is tied to the original venture and team. The evidence is based on 1,766 U.S. patents issued to 285 venture capital-backed startups that disband between 1988 and 2008 in three innovation-intensive sectors: medical devices, semiconductors, and software. At odds with the view that the resale market for patented inventions is illiquid, we find that most patents from these startups are sold, are sold quickly, and remain "alive" through renewal fee payment long after the startups are shuttered. The patents tend to be purchased by other operating companies in the same sector, and retain value beyond the original venture and team. We do find, however, that the patents and people sometimes move jointly to a new organization following the dissolution of the original venture, and explore the conditions under which such co-movement is more likely. The study provides new evidence on a phenomenon-of active markets for buying and selling patents-underexplored in the strategy literature and consequential for both entrepreneurial and established firms.Accepted manuscrip

The Effect of Plasma Beta on High-n Ballooning Stability at Low Magnetic Shear

An explanation of the observed improvement in H-mode pedestal characteristics with increasing core plasma pressure or poloidal beta, as observed in MAST and JET, is sought in terms of the impact of the Shafranov shift, d', on ideal ballooning MHD stability.Comment: 18 pages, 5 figures. This is an author-created, un-copyedited version of an article submitted for publication in Plasma Physics and Controlled Fusion. IoP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from i

Estimating the Effect of Training on Employment and Unemployment Durations: Evidence From Experimental Data

Using data from a social experiment, we estimate the impact of training on the duration of employment and unemployment spells for AFDC recipients. Although an experimental design eliminates the need to construct a comparison group for this analysis, simple comparisons between the average durations or the transition rates of treatments' and controls' employment and unemployment spells lead to biased estimates of the effects of training. We present and implement several econometric approaches that demonstrate the importance of and correct for these biases. For the training program studied in the paper, we find that it raised employment rates because employment durations increased. In contrast, training did not lead to shorter unemployment spells.

The organization of 2,3-iron-naphthalocyanine molecules on substrate as revealed by scanning tunneling microscopy

Surface morphology of thin molecular layer of 2,3-Iron-naphthalocyanine (2,3 FeNPc) was studied by scanning tunneling microscopy (STM) at the ambient conditions. Organic layer with thickness of 40 nm was vapour phase deposited on amorphous carbon substrate. The STM images have revealed the pecularities of surface molecular organization from large range (hundreds of nm) down to atomic scale. Arrays of locally ordered linear stuctures have been distinguished as the main morphological features of the examined surface. At several places the well-ordered STM patterns have been distinguished at the atomic scale. They can be described as stacks of periodicity approximatelly 0.4 nm in a row and 1.5 nm between stacks. These results can be explained by arrangement of 2,3-FeNPh molecules in stacks with a main plane being perpendicular to the substrate surface

Techniques for sensitivity analysis of simulation models: A case study of the CO2 greenhouse effect

Environment;Simulation;environmental economics