A longitudinal investigation of the affective environment in families with young children: From infancy to early school age.

We examined the affective environment in 102 families studied longitudinally when children were 7, 15, 25, 38, 52, and 67 months of age. At each assessment, every mother–child and father–child dyad was observed in typical daily contexts. Each person's emotions of affection, joy, and anger were coded. Both parents rated marital satisfaction when children were 15, 52, and 67 months. Growth curve analyses, using Actor-Partner Interdependence Modeling, examined (a) developmental changes in emotions, (b) within-relationship influences of the partner's emotions, (c) across-relationship influences of emotions in other parent's interactions with the child, and (d) associations between marital quality and emotions over time. Parents' emotional expressiveness was highest early in the child's development, and declined thereafter. Children's anger was highest at 15 months of age, and declined thereafter, and their positive emotions, particularly with mothers, increased over time. Generally, one's positive emotions and better marital quality were associated with greater positive emotion within- and across-relationships, whereas one's anger was associated with greater anger within- and across-relationships. However, any emotion expression elicited greater affection in the interaction partner. Parents' neuroticism did not account for the convergence of emotions across relationships. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The alliance in couple therapy: Partner influence, early change, and alliance patterns in a naturalistic sample.

Objective: The purpose of this study was to explore the relationship between the alliance and outcome in couple therapy and examine whether the alliance predicted outcomes over and above early change. The authors also investigated partner influence and gender and sought to identify couple alliance patterns that predicted couple outcomes. Method: The authors examined the alliances and outcomes at posttreatment and follow-up of 250 couples seeking treatment for marital distress in a naturalistic setting. The Session Rating Scale was used to measure the alliance; the Outcome Rating Scale and Locke Wallace Marital Adjustment Scale were used to measure outcomes. Couples were White, Euro-Scandinavian, and heterosexual, with a mean age of 38.5 years and average number of years together of 11.8. On a subsample (n = 118) that included couples with 4 or more sessions, the authors investigated the relationship between the alliance and outcome controlling for early change, and patterns of alliance development were delineated. Results: In the full sample, first-session alliances were not predictive of outcomes, but last-session alliances were predictive for both individuals and their partners. In the subsample, third-session alliances predicted outcome significantly above early change (d = 0.25) that exceeded the reliable change index. Couple alliances that started over the mean and increased were associated with significantly more couples achieving reliable or clinically significant change. Gender influences were mixed. Conclusions: Given the current findings suggesting a potential alliance impact over and above symptom relief as well as the importance of ascending alliance scores, continuous assessment of the alliance appears warranted. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Wide-Bandwidth Coaxial PWB Transmission Line Probe

The design, fabrication, and test of a wide-bandwidth (3-dB attenuation bandwidth ges 30 GHz), 50 Omega, passive coaxial probe for the electrical characterization of printed wiring board (PWB) transmission lines is described. The probe can make thousands of repeated contacts, using spring-loaded interconnects, without affecting probe performance. The probe contains an internal mechanism for dissipating static charge on the signal line of the PWB transmission line and is long enough (approximately 10 cm) to act as a transfer standard for characteristic impedance testing, as per the time-domain reflectometry test method described in IPC TM 2.5.5.7.     

A rule induction approach for determining the number of kanbans in A just-in-time production system

A procedure based on rule induction is presented which can be used to determine the number of kanbans while simultaneously determining the critical factors in a just-in-time (JIT) production system. In particular, the classification and regression tree (CART) technique developed by Brieman et al. [Breiman, L., Friedman, J., Olshen, R. and Stone, C. J., Classification and Regression Trees. Wadsworth, Belmont, CA, 1984.] is used to automatically generate rules from dynamic shop floor data. An example application of the methodology is presented and the advantages of a rule induction approach are explained. The paper concludes with a discussion of future research directions.     

A Novel Nanoparticle‐Based Disposable Electrochemical Immunosensor for Diagnosis of Exposure to Toxic Organophosphorus Agents

A novel disposable electrochemical immunosensor for highly selective and sensitive detection of organophosphorylated butyrylcholinesterase (OP‐BChE), a specific biomarker for exposure to toxic organophosphorus agents, is presented. In this new approach, zirconia nanoparticles (ZrO₂) were employed to selectively capture the OP moiety of OP‐BChE adducts, followed by quantum dot (QD)‐tagged anti‐BChE antibodies for amplified quantification. The captured CdSe‐QD tags can be sensitively detected by stripping voltammetry using an in situ bismuth‐plating method. The OP agent, diisopropylfluorophosphate (DFP), was selected to prepare OP‐BChE adducts in various matrices. The formation of OP‐BChE adducts in plasma sample was confirmed using mass spectroscopy. The developed electrochemical immunosensor demonstrates a highly linear voltammetric response over the range of 0.1 to 30 nM OP‐BChE, with a detection limit of 0.03 nM (based on signal/noise = 3), coupled with a good reproducibility (relative standard deviation 4.5%). Moreover, the immunosensor has been validated with biomonitoring of OP‐BChE adducts in the plasma samples. This novel nanoparticle‐based electrochemical immunosensor thus provides an alternative way for designing a sensitive and cost‐effective sensing platform for on‐site screening/evaluating exposure to a variety of OP agents.     

Towards Zero Carbon Homes in England? From Inception to Partial Implementation

In 2007, the UK Government announced an ambitious zero-carbon target for all new housing in England. This paper shows how the definition and its associated policies emerged from discourses of environmental policy innovation; how the problem subsequently became framed as one of mainstreaming, consequent upon the apparent success of experimental schemes and defined in more detail through the interaction between pressure group politics and the technical analyses that accompanied the government's consultation exercises. Finally, it shows how regional and local variations in housing and property markets are likely to influence the ease of zero carbon development. The analysis uses concepts drawn from both the science and technology literature and the literature on policy implementation.     

Characterization of the field-effect conductivity distribution in pentacene thin-film transistors by a near-field scanning microwave microscope

Direct probing of the conductivity distribution in organic materials is motivated by the need to obtain a deeper understanding of carrier behavior in organic thin-film transistors (OTFT), organic electro-luminescent devices, organic photoconductors, and organic biosensors. Here we used a near-field scanning microwave microscope to visualize conductivity profiles in OTFT channel. Applying this technique to pentacene field-effect transistors has revealed changes of the conductivity distribution in the channel arising from the development and exhaustion of an accumulated charge region. The electric field profiles, the complementary image of conductivity profiles, which are visualized by using an optical second harmonic generation method, support the results. We anticipate that direct observation by this microwave method will find wide application in measurement of carrier conductivity in organic and nonorganic materials.     

Nutrient budget for Saguling Reservoir,West Java,Indonesia

A preliminary nutrient budget for Saguling Reservoir is reported as a first attempt to quantify the behaviour of nutrients entering this reservoir. This work is part of a larger Indonesia-Australia collaborative research and training project, involving Padjadjaran University and Monash University, established to study nutrient dynamics in Saguling Reservoir. Saguling Reservoir, the first of a chain of three large reservoirs (Saguling, Cirata and Jatilahur), built on the Citarum River in central Java, was completed in 1985. It has already become highly polluted, particularly with domestic and industrial effluent (organic matter, nutrients, heavy metals) from the urban areas of Bandung (population 2 million). The reservoir experiences major water quality problems, including excessive growths of floating plants, toxic cyanobacterial blooms and regular fish-kills. The work reported in this paper shows that Saguling receives a very large nutrient load from the city of Bandung and because of this, is highly eutrophic. It is unlikely that the water quality of Saguling will improve until a substantial part of Bandung is sewered and adequate discharge controls are placed on the many industries in the region upstream of the reservoir.     

Evaluating the Costs and Benefits of Salt Management Strategies at Mine Sites Using a Systems Model

Unprecedented expansion of coal mining in Australia is occurring within the context of a severe ongoing drought. This has induced more companies to adopt improved water management strategies, such as water reuse. A direct consequence of this is an increase in the salt concentration of the water, which affects in turn the efficiency of the coal preparation processes, the quality of the coal product, and the level of required equipment maintenance. There are three strategies that can be adopted with respect to salt management: accept the elevated salt concentrations and increase spending on equipment maintenance; remove the salt by desalination; and dilute the salt by importing more water. A tool is required to predict the salt concentrations arising from water reuse and to simulate the impact of potential management strategies. This paper presents a systems approach to the modelling of coupled mine site water and salt balances to assist with understanding the implications of implementing desalination or dilution and with assessing the costs and benefits of each option.