Informal Institutions and Cross-Country Income Differences

There is a growing literature which analyses, using cross-country data, whether institutions or geography is the most important deep determinant of income per capita. The empirical proxies used for institutions in this literature, however, focus only on formal institutions, rather than informal institutions, despite the fact that North (1990) emphasised the importance of informal institutions. We include a measure of informal institutions, a concept we argue is closely related to social capital and cultural norms, in a representative deep-determinants framework and find informal institutions to be just as important a deep determinant of income levels as are formal institutions.Institutions, deep determinants, social capital, culture.

Episodic mass ejections from common-envelope objects

After the initial fast spiral-in phase experienced by a common-envelope binary, the system may enter a slow, self-regulated phase, possibly lasting 100s of years, in which all the energy released by orbital decay can be efficiently transported to the surface, where it is radiated away. If the remaining envelope is to be removed during this phase, this removal must occur through some as-yet-undetermined mechanism. We carried out 1-d hydrodynamic simulations of a low-mass red giant undergoing a synthetic common-envelope event in such a slow spiral-in phase, using the stellar evolutionary code MESA. We simulated the heating of the envelope due to frictional dissipation from a binary companion's orbit in multiple configurations and investigated the response of the giant's envelope. We find that our model envelopes become dynamically unstable and develop large-amplitude pulsations, with periods in the range 3-20 years and very short growth time-scales of similar order. The shocks and associated rebounds that emerge as these pulsations grow are in some cases strong enough to dynamically eject shells of matter of up to 0.1 $\mathrm{M}_{\odot}$, $\sim 10$ % of the mass of the envelope, from the stellar surface at above escape velocity. These ejections are seen to repeat within a few decades, leading to a time-averaged mass-loss rate of order $10^{-3}$ $\mathrm{M}_{\odot} \: \mathrm{yr}^{-1}$ which is sufficiently high to represent a candidate mechanism for removing the entire envelope over the duration of the slow spiral-in phase.Comment: 24 pages, 15 figures. This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society, published by Oxford University Pres

How equitable is vocational rehabilitation in Sweden? A review of evidence on the implementation of a national policy framework

Purpose. Under the national framework law in Sweden, all eligible people should have equal chances of receiving vocational rehabilitation. We aimed to review the evidence on (1) whether access to vocational rehabilitation is equitable in practice and (2) whether the outcomes vary for different groups in the population. Method. Systematic review of studies in Sweden that reported diagnostic or socio-demographic characteristics of people offered or taking up rehabilitation programmes and outcomes of such programmes for different diagnostic and socio-demographic groups. Searches of 11 relevant electronic databases, 15 organisational websites, citation searching and contact with experts in the field, for the period 1990–2009. Results. A total of 11 studies were included in the final review, six of which addressed review question (1) and seven addressed review question (2). All the six observational studies of access reported biased selection into vocational rehabilitation: greater likelihood for men, younger people, those with longer-term sick leave, those with lower income, employed rather than unemployed people and those with musculoskeletal and mental disorders or alcohol abuse. Having had a rehabilitation investigation also increased the likelihood of receiving vocational rehabilitation. Differential outcome of rehabilitation was reported in seven studies: outcomes were better for men, younger people, employed individuals, those with shorter sick leave and those with higher income. Selection into vocational rehabilitation was perceived as important for successful outcomes, but success also depended on the state of the local labour market. Conclusions. There is evidence of socio-demographic differences in access to and outcomes of vocational rehabilitation in Sweden, even though the national framework law is meant to apply to everyone. Few studies have deliberately measured differential access or outcomes, and there is a need for this kind of equity analysis of population-wide policies. Studies evaluating the effects of vocational rehabilitation must consider selection into the programmes for adequate interpretation of impact results

Was There a Structural Break in Barry Bonds’ Bat?

We utilize time series tests to investigate if Barry Bonds’ batting has a deterministic or stochastic trend and to test if structural breaks occur. Bonds’ monthly on base percentage plus slugging percentage (OPS) is examined from 1986 to 2007. We find that Bonds’ OPS is stationary around two level and trend breaks. We find that Bonds’ OPS initially follows a positive trend to the age of 28.9 (June 1993), which coincides roughly with the expected peak performance age (27.6) for a MLB batter as identified by Fair (2008). Following this break, we find that Bonds’ OPS was on a plateau until a second break in September 2000. At this point, at the age of 36.1, Bonds’ OPS jumps up unexpectedly and declines slowly thereafter until his retirement in September 2007 at age 43. Key Words: age-effects, peak performance, baseball, OPS, structural break

Multiculturalism in question : a study of inter-ethnic relations in the city of Leicester

EThOS - Electronic Theses Online ServiceGBUnited Kingdo

Navigating employment retention with a chronic health condition: a meta-ethnography of the employment experiences of people with musculoskeletal disorders in the UK.

Purpose: Musculoskeletal disorders (MSDs) are associated with high rates of work disability in the UK. This review synthesised qualitative evidence concerning the employment experiences of people with MSDs to explore the factors shaping their employment trajectories post-onset and the resources they draw on to remain in work. Material and methods: Systematic database searches identified 16 qualitative studies of the employment consequences of having a chronic MSD in the UK. Meta-ethnographic methods were utilised to synthesise this body of evidence. This included a translation of concepts across studies to produce a line of argument synthesis. Results: The lack of certainty associated with often fluctuating and invisible MSD symptoms leads to employees struggling to maintain a stable work identity. Work retention is aided by having: a clear diagnosis, occupational tasks commensurate with altered abilities, and employers and colleagues who understand the nature of the condition. The ability to negotiate and implement workplace adjustments aids work retention but is dependent upon having good quality employee-employer relationships and the degree of autonomy available to the employee. Conclusion: Individuals with MSDs must draw on a range of personal, social, organisational and institutional resources to remain in or return to work post-onset