It is common to assume in business cycle analysis that the capital stock is homogenous and constant in aggregate value. We explore the alternative concept that capital is heterogeneous, and whether it exhibits cyclical changes. A multiperiod model of investment implies that acquisition of specific components of capital responds to changes in relative interest rates, and we further show that the...

The understanding of the cause and treatment of premenstrual disorders is confused but it is essentially the result of cyclical ovarian activity, usually ovulation, and an effective treatment should be by suppressing ovulation. This can be done by an oral contraceptive but as these women are progestogen intolerant the symptoms may persist becoming constant rather than cyclical. Alternatively, t...

Whenever unemployment stays high for an extended period, it is common to see analyses, statements, and rebuttals about the extent to which the high unemployment is structural, not cyclical. This essay views the Beveridge curve pattern of unemployment and vacancy rates and the related matching function as proxies for the functioning of the labor market and explores issues in that proxy relations...

Both hyperprolactinemia and depressive disorder are known manifestations of hypothyroidism. However, hyperprolactinemia with overt symptomatology per se has not been reported to precede all episodes of organic depressive disorder. We report a similar presentation.

We consider a certain combinatorial game on a digraph for two cases of the price function. For one case the game in question extends the cyclical game studied in [1,2] which, in its turn, is a generalization of the well-known problem of finding a minimum mean cycle in an edge-weighted digraph. We prove the existence of optimal uniform stationary strategies for both cases and give algorithms to ...

A European lady, aged about 30 years, had bilious vomiting on 23rd October, 1936, at about midnight. In the morning of 24th October her temperature was 99.4?F. She was sick off and on, and could not retain anything. Previous history.?She went out for a picnic on 23rd October, 1936, in the morning in a forest near a river. AVhen she came back in the evening she did not feel well. At about midnig...

Obscure gastrointestinal bleeding constitutes approximately fi ve percent of all gastrointestinal bleeding cases. Patients with this condition are often diffi cult to diagnose and frequently undergo extensive GI testing. This is no news item to all gastrointestinal specialists. The following cases highlight several different presentation scenarios, the long road to correct diagnosis, and some i...