Owner-managers of private companies are often highly underdiversified. We investigate the consequences of underdiversification at the company level. There is a strong positive relationship between underdiversification, measured as the share of personal net worth invested in the company, and profitability, measured as the return on equity. The analysis identifies two causes for this underdiversi...

BACKGROUND Although there have been a number of economic evaluations of cardiac rehabilitation after acute myocardial infarction (AMI), none has considered only low-risk patients or control groups with no rehabilitation at all. METHODS An economic evaluation was included in a randomised controlled trial of patients following uncomplicated AMI. Eligible patients were randomised to return to no...

This study examines the stock return responses to the announcements of foreign direct investments (FDI) by Singapore companies. The standard event study methodology is used to ascertain the abnormal returns around the announcement day (day 0). The study covers the period from 1989 to 1994 with a sample size of 70 events. The announcement effect is positive and significant around the announcemen...

the purpose of this study was to evaluate the profitability of hatchery litter recycling into poultry feedstuff supplement. the data were collected in 2011 in 4 provinces, by direct interviewing of all hatcheries which used the hatchery litter drying machine. net present value (npv), benefit-cost ratio (bcr), and internal rate of return (irr) methods were applied for this analysis. in the studi...

the ability of boards to perform their roles depends largely on their composition. board composition refers to the number of directors and type of members as determined by the usual insider or outsider classification. several empirical studies in other country have concluded that board composition determines a board’s power as an instrument of corporate control and contributes to company perfor...

Climate variability can induce uncertainty in yields, and threaten long term economic viability of rainfed agricultural enterprises in the absence of effective adaptation strategies. Enterprise mix diversification has been found to be an effective adaptation strategy for mitigating multiple sources of farm business risk in some contexts. The extent to which enterprise mix diversification can mi...

The net work of the limbs during constant speed over level ground should be zero. However, the partitioning of negative and positive work between the fore- and hindlimbs of a quadruped is not likely to be equal because the forelimb produces a net braking force while the hindlimb produces a net propulsive force. It was hypothesized that the forelimb would do net negative work while the hindlimb ...

Hypertension and atherosclerotic coronary arterial obstruction frequently coexist in patients. However, the effect of increased aortic pressure on ischemic segmental dysfunction is not well understood. We studied the effects of aortic pressure increases on segmental left ventricular function during myocardial ischemia. Eighty-two dogs instrumented with three to six pairs of pulse-transit piezoe...