Knowledge frontier discovery is a novel technique for identifying interesting subpopulations of a dataset with respect to classification performance. A knowledge frontier is a collection of meaningful groups where any sub-partition with significantly different predictive accuracy is not meaningful. This research introduces knowledge frontiers and knowledge frontier discovery. The first knowledg...

Adsorption of benzimidazole, 2-methylbenzimidazole and 2-aminobenzimidazole on mild steel in 3.5 NaCl solution was studied using density function theory DFT calculations. In this regard, charge transfer resistance Rct and double layer capacitance Cdl obtained by electrochemical impedance spectroscopy EIS were used to calculate surface coverage and to build prediction models. When prediction mod...

This paper uses the concept of Meta-frontier to investigate the relationship between Meta Technology Ratios (MTR) and different varieties in datepalms including; Mazafati, Rabi and Zardan that are produced widely in Sistan and Baluchestan province of Iran. We used a stratified sampling of 300 date farmers of this province in 2010, 2011 and 2012 and estimated a stochastic production frontier usi...

Quantifying the shadow price (SP) of CO2 emissions is key to achieving China’s “double carbon” targets. Considering technology heterogeneity, this study applies stochastic frontier analysis combined with meta-frontier estimate environmental technical efficiency (ETE) and SP for fossil fuel power plants from 2005 2015. This approach overcomes lack statistical inference consistency traditional me...

In the field of iron-based superconductors, one of the frontier studies is about the pairing mechanism. The recently discovered (Li(1-x)Fe(x))OHFeSe superconductor with the transition temperature of about 40 K provides a good platform to check the origin of double superconducting gaps and high transition temperature in the monolayer FeSe thin film. Here we report a scanning tunnelling spectrosc...

Efficiency measurement naturally requires the definition of a frontier as a benchmark indicating efficiency. Usually a measure reflecting the distance of a data point to the frontier indicates the level of efficiency. One of the crucial characteristics to distinguish efficiency measurement tools is the way in which they construct the frontier. The class of deterministic and non parametric tools...

License agreements constitute between 20-33% of all strategic alliances in sectors commonly identified as likely candidates for an endogenous fixed cost (EFC) model; namely biotechnology and chemicals among others. We develop a model of endogenous market structure and fixed (sunk) cost R&D investment based on Sutton (1998; 2007) and include the ability of firms to license their technology to (p...

For a strongly connected Extended-Free-Choice Net (EFC-net) N the algorithm given in this paper either nds a cover of S-components or recognizes that N is not well-formed. Well-formedness denotes the existence of a live and bounded marking for N. The algorithm is also adaptable to compute a cover of T-components. The time complexity is O(jPjjTj). According to the Rank Theorem, nding a cover of ...

The Expansionary Fiscal Contraction (EFC) hypothesis predicts that a major fiscal consolidation leads to an economic expansion under certain circumstances. We test this hypothesis, and the implied non–linear responses of the economy to large and small changes in fiscal policy, using data from the 1983 Danish fiscal reform. We use a structural VAR/event study methodology following Blanchard and ...