Empirical evidence shows that entrepreneurs hold a large fraction of wealth, have higher saving rates than workers, and face substantial uninsurable entrepreneurial and investment risks. This paper constructs a heterogeneous-agent general equilibrium model with uninsurable entrepreneurial risk and capital-market imperfections to explore the implications of uninsurable entrepreneurial risk for w...

Let (X ,μ) be a probability space, set X to be distributed according to μ and put Y to be an unknown target random variable. In the usual setup in learning theory, one observes N independent couples (Xi, Yi)Ni=1 in X × R, distributed according to the joint distribution of X and Y . The goal is to construct a real-valued function f which is a good guess/prediction of Y . A standard way of measur...

Scholars have wondered for a long time whether quantum mechanics (QM) subtends a quantum concept of truth, formalized by quantum logic (QL) and radically different from the classical (Tarskian) concept of truth. We show in this paper that QL can be obtained as a pragmatic structure LPQD of pragmatically decidable assertive formulas which formalizes the metalinguistic concept of empirical justif...

We present a new approach to unbounded, fully symbolic model checking of timed automata that is based on an efficient translation of quantified separation logic to quantified Boolean logic. Our technique preserves the interpretation of clocks over the reals and can check any property in timed computation tree logic. The core operations of eliminating quantifiers over real variables and deciding...

This paper proposes four methods and empirical formulas of adjusting characteristic impedances for thin-metal mesh transmission lines. The are discretely adjusted by changing the number size unit meshes, which provides macro-tuning capability, discrete values can be tuned more precisely varying line width aspect ratio geometry. validity proposed is confirmed full-wave numerical simulations, sim...

In many application areas such as pavement engineering, the phenomena are complex, and a result, we do not have first-principle models describing corresponding dependencies. Luckily, in areas, there is lot of empirical data and, based on this data, useful dependencies been found. The problem that since these theoretical explanation, practitioners often hesitant to use them: cases when an formul...

Abstract In the field of ultra-high-speed motors, windage loss rises rapidly with increase rotational speed, and even becomes main part motor loss. However, most researches are based on empirical formulas, which has a narrow scope application. These formulas could not guarantee accuracy when calculating large Taylor number flow in high-speed air gap, especially under axial ventilation condition...

The most effective way to express the mathematical and physical research results is by using formulas. Our article contains formulas that were biggest contributors development of technical, physical, sciences. can be applied in different areas. In this article, we will show how calculate an orbit a miniature satellite based on Law Gravity. For calculations online recording results, are MATLAB s...