Barrel chest is a kind of thoracic deformity. Clinically, it always secondary to chronic lung disease, which does not need treatment. also common in young people and adults. Due the serious impact on appearance thorax, patients have strong desires for surgery. We applied Wenlin procedure operation barrel achieved satisfactory results. This paper introduces 25-year-old male patient with chest.

This chapter traces theoretical and empirical progress in the study of human mating over the past few decades. Early pre-evolutionary formulations proposed that men and women were identical in their mating motivations. Most were simplistic, typically postulating a single motive for mating: the search for similarity, equity, or complementarity. Given the large sex differences in human reproducti...

In qualitative decision-theoretic planning desires { qualitative abstractions of utility functions { are combined with defaults { qualitative abstractions of probability distributions { to calculate the expected utilities of actions. In this paper we consider Lang's framework of qualitative decision theory, in which utility functions are constructed from desires. Unfortunately there is no conse...

In U.S. data 1981–2012, unsecured firm credit moves procyclically and tends to lead GDP, while secured firm credit is acyclical; similarly, shocks to unsecured firm credit explain a far larger fraction of output fluctuations than shocks to secured credit. In this paper we develop a tractable dynamic general equilibrium model in which unsecured firm credit arises from self-enforcing borrowing co...