Drivers of soil carbon in residential ‘pure lawns’ in Auburn,Alabama

Urban land area is expanding worldwide and may contribute to long-term carbon (C) storage; however, little is known about potential drivers of soil C in urban areas. Residential areas are one of the largest urban land use zones and lawns can provide stable chronosequences for studying soil C dynamics. In residential lawns containing no trees (n?=?23), the relationships between soil C and four potential drivers [home age (1–51 years), yard maintenance practices (fertilization, irrigation, and bagging or mulching lawn clippings), soil nitrogen (N) and soil texture] were investigated. Soil C increased with home age at 0–15 cm depth by 0.026 kg C m^?2?yr^?1, declined by ?0.011 kg C m^?2?yr^?1 at 15–30 cm depth, and was stable at 30–50 cm depth. Soil C had a positive relationship with soil N (R ²?=?0.55) at the 0–15 cm depth. Soil C and N were not related to yard maintenance practices or soil texture. The low soil C sequestration rate and limited relationships between soil C and home age, yard maintenance, soil N and soil texture may have resulted from the positive influence of Auburn’s humid, subtropical climate on residue decomposition.     

Joint analysis of longitudinal data comprising repeated measures and times to events

In biomedical and public health research, both repeated measures of biomarkers Y as well as times T to key clinical events are often collected for a subject. The scientific question is how the distribution of the responses [ T , Y | X ] changes with covariates X . [ T | X ] may be the focus of the estimation where Y can be used as a surrogate for T . Alternatively, T may be the time to drop-out in a study in which [ Y | X ] is the target for estimation. Also, the focus of a study might be on the effects of covariates X on both T and Y or on some underlying latent variable which is thought to be manifested in the observable outcomes. In this paper, we present a general model for the joint analysis of [ T , Y | X ] and apply the model to estimate [ T | X ] and other related functionals by using the relevant information in both T and Y . We adopt a latent variable formulation like that of Fawcett and Thomas and use it to estimate several quantities of clinical relevance to determine the efficacy of a treatment in a clinical trial setting. We use a Markov chain Monte Carlo algorithm to estimate the model's parameters. We illustrate the methodology with an analysis of data from a clinical trial comparing risperidone with a placebo for the treatment of schizophrenia.     

Research in Management Control: An Overview of its Development

This paper builds on a series of earlier reviews of the management control literature (Giglioni and Bedeian, 1974; Hofstede, 1968; Merchant and Simons, 1986; Parker, 1986) and considers the development of the management control literature in the context of organizational theories. Early themes which have provided the roots for the development of the subject area are explored as is more recent work which has evolved both as a continuation and a reaction against them, with Scott's (1981) framework being used to organize this literature. It is argued that one of the unintended consequences of the influential work of Robert Anthony (1965) has been a restriction of the subject to an accounting-based framework and that this focus needs to be broadened. The review points to the potential of the subject as a integrating theme for the practice and research of management and some themes for future research are suggested.     

Book Review: Robert H. Bremner,Giving, Charity and Philanthropy in History,Transaction Publishers,New Brunswick and London, 1996, xiii + 241 pp.

VOLUNTAS: International Journal of Voluntary and Nonprofit Organizations -     

To have or not to have? Australian women’s childbearing desires,expectations and outcomes

Australia’s low fertility rate is commonly attributed to deliberate decisions by women to avoid having children. Existing theoretical explanations of fertility decision-making mostly view childbearing as a rational, voluntary process and focus on the ‘costs’ to women of having children. Although this may help explain why women do not have children, it contributes very little to understanding why women do have children. This study describes childbearing desires, expectations and outcomes in a population-based sample of 569 30–34-years-old Australian women recruited from the Australian Electoral Roll in 2005. Most women surveyed wanted to have children, and their childbearing outcomes were associated with biological, psychological and social factors including the lack of a partner and adverse health conditions. The factors and their relative importance varied by parity. Most women had fewer children than they desired, and many would have children, or more children, if their circumstances were different. These data challenge prevailing assumptions about women’s childbearing behaviour that women are able to choose when and if they have a child. Based on the findings, a conceptual framework of childbearing behaviour is proposed which builds on existing theoretical explanations to explain why women do and do not have children, differences by parity, and the role of circumstances in women’s childbearing behaviour. The findings and conceptual framework have implications for public policies, and indicate that multiple approaches are required which are sensitive to and address the barriers women face in family formation.     

Interpreting seventeenth-century probate documents: John Carter, master carpenter in St Albans

This is a study of a successful seventeenth-century carpenter in St Albans, John Carter, using probate and other documents, assisted by a large-scale computer database of St Albans residents of the period. Sections of the article cover his family, his work and his house and its contents, which have been reconstructed from his probate inventory and from knowledge of the structure of other local houses of the period. Carter's social standing is discussed, both in its local context and in relation to previous probate inventory analyses. This micro-study sheds unusual light upon aspects of the life of a 'middling sort' of person, living in a thriving market town in close proximity to London, at the beginning of the consumer age.     

Depression Amongst Chinese Adolescents in Hong Kong: An Evaluation of a Stress Moderation Model

Stress has an established association with depression. However, not all adolescents experiencing stressors become depressed and it is helpful to identify potential resilience factors. The current study tests a theoretical extension of a stress-diathesis model of depression in a Chinese context, with stress, coping, family relationships, and alexithymia as risk factors for depression. This community study involves 1,199 secondary school students (567 males and 632 females) aged between 14 and 20 from six high schools with different bandings in Hong Kong. The models tested confirm the relationship between stress and depression. Ability to identify of one’s feelings (alexithymia subscale), the adoption of problem solving coping and the rejection of non-productive coping all acted as protective factors (moderators) against depression in the presence of stress. Coping also partially mediated the relationship between alexithymia and depression. A stress-diathesis model received some support, however, a complex set of inter-relationship between all the explanatory variables was revealed. Problem solving coping and non-productive coping emerged as key factors in understanding adolescent depression.