Establishing turf grass increases soil greenhouse gas emissions in peri-urban environments

Urbanization is becoming increasingly important in terms of climate change and ecosystem functionality worldwide. We are only beginning to understand how the processes of urbanization influence ecosystem dynamics and how peri-urban environments contribute to climate change. Brisbane in South East Queensland (SEQ) currently has the most extensive urban sprawl of all Australian cities. This leads to substantial land use changes in urban and peri-urban environments and the subsequent gaseous emissions from soils are to date neglected for IPCC climate change estimations. This research examines how land use change effects methane (CH₄) and nitrous oxide (N₂O) fluxes from peri-urban soils and consequently influences the Global Warming Potential (GWP) of rural ecosystems in agricultural use undergoing urbanization. Therefore, manual and fully automated static chamber measurements determined soil gas fluxes over a full year and an intensive sampling campaign of 80 days after land use change. Turf grass, as the major peri-urban land cover, increased the GWP by 415 kg CO₂-e ha^?1 over the first 80 days after conversion from a well-established pasture. This results principally from increased daily average N₂O emissions of 0.5 g N₂O ha^?1 d^?1 from the pasture to 18.3 g N₂O ha^?1 d^?1 from the turf grass due to fertilizer application during conversion. Compared to the native dry sclerophyll eucalypt forest, turf grass establishment increases the GWP by another 30 kg CO₂-e ha^?1. The results presented in this study clearly indicate the substantial impact of urbanization on soil-atmosphere gas exchange in form of non-CO₂ greenhouse gas emissions particularly after turf grass establishment.     

The Role of Aboriginal Medical Services

The research reported in this article evaluates a social psychological model predicting preferences of black patients for alternative medical facilities in Townsville. Results show that proximity, security, experience, assimilation, and seriousness of illness all contribute to a preference for either the Aboriginal and Islander Community Health Service or the white administered out-patient service of the General Hospital. The hospital sample is characterized by an active preference for integration, whereas patients attending the Aborignal and Islander Community Health Service do so because of the services provided and socio-emotional support. The study also shows that a substantial number of black patients do not attend any medical facility, supporting the need for an active community organized program of health services.     

Problem Gambling Associated with Violent and Criminal Behaviour: A Danish Population-Based Survey and Register Study

This study compares the number of criminal charges among problem gamblers (N = 384) and non-problem gamblers including non-gamblers (N = 18,241) and examines whether problem gambling is more strongly associated with income-generating crimes like theft, fraud and forgery than other types of crimes such as violent crimes. A cohort study was carried out, based on data from the Danish Health and Morbidity Surveys in 2005 and 2010, which were linked at the individual level with data from The Danish National Criminal Register. Multiple logistic regression analyses were used to determine the association between problem gambling and charges for different categories of crime. We found that problem gamblers had significantly higher odds of being charged than non-problem gamblers (adjusted odds ratio 1.5; 95 % confidence interval 1.1–1.9). The odds ratio for economic crime charges was 2.6 (1.5–4.5), for violence charges 2.2 (1.1–4.5), and for drug charges 3.7 (1.7–8.0). For road traffic charges the odds ratio was 1.3 (1.0–1.8). Hence, there was a strong association between problem gambling and being charged except for road traffic charges; however the association was not stronger for economic charges than for violence and drug charges.     

Predicting marital satisfaction using prepare: a replication study*

This study clearly replicated the previous findings which demonstrated the predictive validity of PREPARE. Like the previous study, this longitudinal study was a 3-year follow-up of 179 couples who took PREPARE during their engagement. As in the initial longitudinal study, PREPARE predicted, with about 80% accuracy, couples who got divorced from those that were happily married. Also, the same linear trend in PREPARE scores was found (highest to lowest scores): happily married, unhappily married, cancelled/delayed marriage, and separated/divorced. This study further indicates the importance of the premarital period as the foundation for marriage and the ability of PREPARE to identify high-risk premarital couples who could benefit from premarital counseling. Premarital counseling could potentially help these high risk couples develop a more satisfying marriage.     

Divorce and Remarriage in Norway: A Prospective Cohort Study Between 1981 and 2013

ABSTRACT

As the population of divorced adults has increased, the number of remarriages has followed. Previous research has mainly compared first-time marriages with remarriages, whereas this study analyzes 4 different constellations of marriages: first time for both spouses, first time for one and second time for the other, second time for both, and third time or more for at least one member of the couple. The analyses are based on data from all Norwegian 2-sex marriages formed from 1981 to 2013, for a total of more than 770,000 marriages. The findings indicate that remarried couples are considerably more prone to divorce compared to couples married for the first time, particularly marriages in which both partners are remarried and marriages in which at least one of the partners is married for the third time or more. The differences between the various groups of marriages decline with a longer duration of the marriage.     

Dynamic capacity adjustments with reactive customers

In this paper we develop a behavioural model in which customers come and go based on their perception of waiting time (relative to other facilities) while managers gradually adjust the capacity of the facility based on their perception of demand. We explicitly account for the difference in access to information between existing and potential customers, which implies that the perception of potential customers lags the perception of current customers. We investigate the outcome of the interaction between these simultaneous dynamic decision processes, and in particular the impact of the lags created by the perception formation process and the time to implement desired changes in capacity. These multiple delays may result in customers and service provider being out of step: customers walk away just as the service provider manages to bring extra capacity online.