MMPI overlap item scales for differentiating psychotics, neurotics, and nonpsychiatric groups.

To test the hypothesis that overlapping items of MMPI scales measure factors common to the criterion groups associated with the scales, 3 scales were constructed: Neurotic Overlap, Psychotic Overlap, and Maladjustment Overlap. These scales were validated against clinical psychotic and neurotic groups and 2 normal control groups. Results support the hypothesis and the validity of the 3 new scales. (2 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Influence of overlapping and nonoverlapping items on the theoretical interrelationships of MMPI scales.

Scored 100 adults' MMPI protocols for (a) items appearing only on 1 scale (nonoverlapping) and (b) items appearing on more than 1 scale (overlapping). The correspondence of these 2 sets of scales to a theoretical structure composed of neuroticism, psychoticism, and extraversion dimensions was considered using a method presented by J. A. Wakefield and E. B. Doughtie (see record 1974-08049-001). The correspondence of the scales composed of nonoverlapping items with the theoretical structure was insignificant. The correspondence of the scales composed of overlapping items conformed extremely closely to the theoretical structure. Results indicate that neuroticism, psychoticism, and extraversion factors found in the MMPI are due to items that appear on more than 1 scale. It is argued that the factors attributable to the overlapping items validly represent the similarity of the criteria against which the scales were validated. (17 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Constituents as acquisitional units of an unknown language.

3 groups of 8 English monolingual undergraduates each listened to 18 repetitions of a story into which Korean segments were gradually substituted for corresponding English segments. The segments substituted into the story were (a) words, (b) constituents, and (c) sentences. The acquisition of Korean language was tested using 10 Korean sentences presented in the story and 10 unfamiliar Korean sentences. All 3 groups responded above chance level to the familiar sentences. Only the constituent group responded above chance level to the unfamiliar sentences. It is concluded that presentation of a new language by constituents helped the learner deal with novel sentences in the new language better than presentation by words or by sentences. (15 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

渣组成对钢水洁净度的影响

 在实验室基础上对比研究了w(CaO)/w(SiO2)为5、w(Al2O3)为25%的渣系A,w(CaO)/w(SiO2)为8、w(Al2O3)为46%的渣系B,与高强度合金结构钢液在1600 ℃条件下反应90 min后钢水洁净度的变化,研究结果表明：随着渣系由A到B,钢中总氧质量分数平均值由12.25×10-6降低到9.25×10-6,硫质量分数平均值由19×10-6降低到8.63×10-6,炉渣的硫分配系数LS由7~17增加到120~260;渣系A、渣系B与合金钢液反应后钢中夹杂物大部分是钙镁铝硅酸盐类夹杂,并且得出渣系B精炼条件下钢中这类夹杂熔点明显低于渣系A精炼条件下的此类夹杂。     

Membrane Bioreactor for Cometabolism of Trichloroethene Air Emissions

Biofilters have been of limited use for cometabolism of chlorinated organic compounds, such as trichloroethene (TCE), due to enzyme inhibition or toxicity effects. A hollow fiber membrane bioreactor was investigated that involves a bundle of polypropylene fibers through which volatile organic compound contaminated air passes. The fibers are immersed in a recirculating nutrient/cosubstrate solution. Batch culture experiments were performed with a mixed culture that could cometabolize TCE with toluene as a primary substrate. No inhibition or inquiry to the toluene degrading ability was observed at up to 15 mg L?1 toluene or up to 1.5 mg L?1 TCE. The culture was inoculated into the hollow-fiber membrane bioreactor. Initially toluene was supplied to the reactor to build a sufficient biomass density on the fibers. After steady-state toluene removal was achieved, TCE was added to the gas phase of the reactor. Toluene was added in three different configurations: (1) As a mixture with TCE in the gas phase; (2) by pulsing into the gas phase; or (3) to the liquid phase. This paper investigates which reactor configuration is most favorable for cometabolism of toluene and TCE.     

Exploring the link between early constructor involvement in project decision-making and the efficacy of health and safety risk control

The position of the constructor in communication networks, including those before the commencement of construction, is likely related to the quality of work health and safety (WHS) outcomes realized. In order to examine the extent of this relationship, 23 cases were drawn from 10 participating construction projects in Australia and New Zealand. Social network analysis was used to mathematically and graphically model information exchanges in 13 of these cases. For each case, the quality of WHS risk control outcomes was measured. This measurement was based on an established ‘hierarchy of control’ in which risk controls are classified in descending order of effectiveness from the elimination of a hazard (the most effective) to the reliance on personal protective equipment (the least effective). Social network metrics were calculated reflecting: (1) the ratio of actual links among parties in the project network relative to the maximum number of links possible (network density); and (2) the extent to which the constructor communicated with other parties in pre-project planning and design stages (the constructors’ degree centrality). Network metrics were compared for cases in which the risk control scores were higher and lower than average. The results showed a significant difference in constructors’ pre-construction degree centrality for cases with high and low risk control scores. The results provide preliminary evidence as to the potential WHS benefits of ensuring that constructors’ knowledge about construction methods, materials, WHS risks and means of risk control, are integrated into pre-construction decision-making.     

Museum Development in the Gulf: Narrative and Architecture

How might interpretations of the past be informing the culture of tomorrow? Sarina Wakefield , a specialist in heritage and museum development in the Middle East, provides an overview of the form and function of contemporary museums in Qatar, Bahrain, Saudi Arabia and the UAE. In so doing, she explores how institutions are drawing on locally specific heritage and cultural objects to develop distinctive identities for an international audience.