John A. Rigg

Disability and Disadvantage: Selection, Onset, and Duration Effects

A composite compressor wheel for turbochargers and the like comprises a cast shell having aerodynamically contoured centrifugal impeller blades and a hub section defining a generally conical recess into which a hub insert of noncast material resistant to stress failure is secured as by inertia welding. In use of the composite wheel, the hub insert substantially occupies high stress regions within the wheel to improve wheel fatigue life.

Retirement and the income of older people: a British perspective

Little is known about the income dynamics of retirement in Britain, in part because of a lack of data. The information is of some topical interest given the growing number of older people, the trend towards earlier retirement, the decline in the value of the basic state pension, the growing reliance on occupational and private pensions, and continuing relatively high poverty rates among people in old age. This paper considers the important question of income and retirement and, in particular, the association between transitions into retirement and the probability of becoming poor. It is based on longitudinal data from the British Household Panel Survey waves 1–9, covering 1991–1999. We also relate differences in poverty entry probabilities among the retired to differences in factors such as a retirees health, housing tenure, age and sex, education, labour market status and history, household composition and spouses characteristics.

Dinamica del reddito e ciclo di vita

Income Dynamics and the Life Cycle - This article argues that our understanding of income and poverty dynamics benefits from taking a life-cycle perspective. A person’s age and family circumstances - the factors that shape their life cycle - affect the likelihood of experiencing key life events, such as partnership formation, having children, or retirement; this in turn affects their probability of experiencing rising, falling, or other income trajectories. Using ten waves of the British Household Panel Survey, we analyse the income trajectories of people at different stages in their lives in order to build a picture of income dynamics over the whole life cycle. We find that particular life events are closely associated with either rising or falling trajectories, but that there is considerable heterogeneity in income trajectories following these different events. Typically, individuals experiencing one of these life events are around twice as likely to experience a particular income trajectory, but most individuals will not follow the trajectory most commonly associated with that life event. This work improves our understanding of the financial impact of different life events and provides an indication of how effectively the welfare state cushions people against the potentially adverse impact of these events.