The transtheoretical model has been applied to many addictive disorders. In this study, psychometrics properties of the University of Rhode Island Change Assessment (URICA) scale were evaluated in 234 pathological gamblers initiating treatment. Four components were identified--reflective of precontemplation, contemplation, action, and maintenance stages--with internal consistency from .74 to .88. Cluster analyses identified 4 patterns of responding, ranging from ambivalent to active change. The 4 clusters differed with respect to baseline gambling variables and treatment engagement and outcomes assessed 2 months later. A continuous measure of readiness to change was also correlated with gambling severity and predictive of reductions in gambling. This study provides initial support for reliability and validity of the URICA in treatment-seeking gamblers, and it suggests that stage of change may have an impact on outcomes. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
The quality of water provided by the Budapest Waterworks should comply with the standards prescribed by the European Community. According to these provisions, on one of the major water-producing regions (Csepel Island), rows of wells of 60,000 m3/day yield have been closed recently, and in the immediate future further plants would have been closed because of the high iron and manganese content of the water.
The raw water obtained from 100 different wells will be purified by a water treatment plant of 150,000 m3/day capacity. Considering the high iron content (0.05–0.15 mg/L) and manganese content (0.05–0.2 mg/L), the raw water fails to comply with the requirements of the potable water standard.
Since 1990, over a period of three years, we conducted water purification experiments in several stages. In these, three methods of oxidizing as well as single and double layer open rapid filters were applied to oxidize the manganese (and, to a lesser extent, the water) present in dissolved form, resp., to destroy various living organisms.
In the course of the experiments, it became clear that the chlorine and chlorine + air methods are efficient in case of a small quantity of iron to be oxidized and only 20–25% of the dissolved manganese content could be oxidized.
Neither of the two methods could ensure firm management of microbiological and bacteriological characteristics. The best results were obtained by ozone oxidation, in which case the chemical oxidizing process was almost fully completed and even the chlorine-resistant living organisms could be destroyed.
On the basis of the experiments carried out, the investment program of the water treatment plant was worked out and the conditions of an international tender were compiled whose winner will be commissioned to build up the water works in the time period 1993–1996. One of the main steps of the proposed technology is the ozone treatment. 相似文献
Despite New Zealand's reputation in literacy instruction, a major achievement gap has been identified for minority Maori and Pacific Islands children in poor schools. An intervention through professional development of teachers modified instructional practices in beginning literacy instruction. The intervention involved 72 teachers from 12 schools who focused on children in the 1st 6 months of schools. A mixed longitudinal and cross-sectional design was used to examine the effects of the intervention on the language and literacy of 344 children across the age range of 5.0-6.0 years. The children in these schools made accelerated progress and gained higher levels of achievement across a broad band of measures compared with matched cohort groups. It is possible to raise achievement for minority children in schools serving low socioeconomic communities to near national levels. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献