Does school health and home economics education influence adults' food knowledge?

Home economics and health teachers are to be found in many parts of the world. They teach students about food in relation to its nutritional, safety and environmental properties. The effects of such teaching might be expected to be reflected in the food knowledge of adults who have undertaken school education in these areas. This study examined the food knowledge associations of school home economics and health education among Australian adults. Two separate online surveys were conducted nationwide among 2022 (November 2011) and 2146 Australian adults (November-December 2012). True/false and multiple choice questions in both surveys were used to assess nutrition, food safety and environmental knowledge. Knowledge scores were constructed and compared against respondents' experience of school health or home economics education via multiple regression analyses. The results from both studies showed that home economics (and similar) education was associated with higher levels of food knowledge among several age groups. The associations of home economics education with food knowledge differed across several Australian states and recall of home economics themes differed across the age groups. These findings suggest that home economics education may bring about long-lasting learning of food knowledge. Further research is required, however, to confirm the findings and to test the causal influence of home economics education on adults' food knowledge.

Screen-time weight-loss intervention targeting children at home (SWITCH): a randomized controlled trial study protocol

BACKGROUND: Approximately one third of New Zealand children and young people are overweight or obese. A similar proportion (33%) do not meet recommendations for physical activity, and 70% do not meet recommendations for screen time. Increased time being sedentary is positively associated with being overweight. There are few family-based interventions aimed at reducing sedentary behavior in children. The aim of this trial is to determine the effects of a 24 week home-based, family oriented intervention to reduce sedentary screen time on children's body composition, sedentary behavior, physical activity, and diet.

METHODS/DESIGN: The study design is a pragmatic two-arm parallel randomized controlled trial. Two hundred and seventy overweight children aged 9-12 years and primary caregivers are being recruited. Participants are randomized to intervention (family-based screen time intervention) or control (no change). At the end of the study, the control group is offered the intervention content. Data collection is undertaken at baseline and 24 weeks. The primary trial outcome is child body mass index (BMI) and standardized body mass index (zBMI). Secondary outcomes are change from baseline to 24 weeks in child percentage body fat; waist circumference; self-reported average daily time spent in physical and sedentary activities; dietary intake; and enjoyment of physical activity and sedentary behavior. Secondary outcomes for the primary caregiver include change in BMI and self-reported physical activity.

DISCUSSION: This study provides an excellent example of a theory-based, pragmatic, community-based trial targeting sedentary behavior in overweight children. The study has been specifically designed to allow for estimation of the consistency of effects on body composition for Māori (indigenous), Pacific and non-Māori/non-Pacific ethnic groups. If effective, this intervention is imminently scalable and could be integrated within existing weight management programs..

Control and performance in IS projects: a meta-analysis of hierarchical and market-based control relationships

Literature on IS project control distinguishes between hierarchical and market-based control relationships. Prior studies typically investigate one of these two forms of control relationships in isolation. Hence, little is known about the differences between hierarchical and market-based control relationships. Responding to this gap, we analyze how the effects of control modes on IS project performance differ in hierarchical compared with market-based control relationships. Specifically, we conduct a metaanalysis to compare the effects of control modes on IS project performance reported in research on hierarchical and market-based control relationships. The results suggest that the effects of behavior and self-control on performance differ between these two forms of control relationships. Based on our results, we derive implications for complementary and substitutive effects between control modes, and for interrelations among hierarchical and market-based control relationships.

Nucleus accumbens deep-brain stimulation efficacy in ACTH-pretreated rats: alterations in mitochondrial function relate to antidepressant-like effects

Mitochondrial dysfunction has a critical role in the pathophysiology of mood disorders and treatment response. To investigate this, we established an animal model exhibiting a state of antidepressant treatment resistance in male Wistar rats using 21 days of adrenocorticotropic hormone (ACTH) administration (100 μg per day). First, the effect of ACTH treatment on the efficacy of imipramine (10 mg kg(-1)) was investigated alongside its effect on the prefrontal cortex (PFC) mitochondrial function. Second, we examined the mood-regulatory actions of chronic (7 day) high-frequency nucleus accumbens (NAc) deep-brain stimulation (DBS; 130 Hz, 100 μA, 90 μS) and concomitant PFC mitochondrial function. Antidepressant-like responses were assessed in the open field test (OFT) and forced swim test (FST) for both conditions. ACTH pretreatment prevented imipramine-mediated improvement in mobility during the FST (P<0.05). NAc DBS effectively improved FST mobility in ACTH-treated animals (P<0.05). No improvement in mobility was observed for sham control animals (P>0.05). Analyses of PFC mitochondrial function revealed that ACTH-treated animals had decreased capacity for adenosine triphosphate production compared with controls. In contrast, ACTH animals following NAc DBS demonstrated greater mitochondrial function relative to controls. Interestingly, a proportion (30%) of the ACTH-treated animals exhibited heightened locomotor activity in the OFT and exaggerated escape behaviors during the FST, together with general hyperactivity in their home-cage settings. More importantly, the induction of this mania-like phenotype was accompanied by overcompensative increased mitochondrial respiration. Manifestation of a DBS-induced mania-like phenotype in imipramine-resistant animals highlights the potential use of this model in elucidating mechanisms of mood dysregulation.

Conglomerate structure and capital market timing

We examine the effects of keiretsu structure on capital market-timing. Keiretsu groups offer a hybrid structure between fully integrated conglomerates and stand-alone firms. We find that past market conditions affect the capital structure of keiretsu firms more than they affect the capital structure of unaffiliated firms. The decision to issue equity is more correlated with market conditions for keiretsu members than it is for unaffiliated firms. The stock returns of keiretsu firms following the issuance of equity decrease with the size of the issuance. These results suggest that keiretsu members time the issuance of equity more so than stand-alone firms.

Investors’ behavior in an emerging, tax free market

We provide empirical evidence on the stock market participants’ behavior in an emerging market, with a tax-free environment. Our results show that UAE investors exhibit overconfidence and home bias, and tend to sell prior winners and buy prior losers. We find that investors rely on familiarity and on their information channels to make decisions. The results indicate that investors are risk averse, especially after the global financial crisis, which has had contagion effect on UAE markets. Investors attribute this effect to the inability to manage systemic crisis and to problems of information asymmetry, insider trading, and lack of good governance during crisis.

Effects of trunk-shaker harvester and ethephon on plant water status, leaf gas exchange, and yield of citrus cultivated under Mediterranean conditions

This work was aimed to study whether the application of ethephon as an abscission agent and mechanical harvest using a trunk shaker have any effect on plant water status, leaf gas exchange, and yield of mandarin and orange trees cultivated under Mediterranean conditions. The experiment was performed from 2008 to 2011 in five commercial orchards where parameters related to the plant water status and leaf gas exchange were measured before the application of ethephon, at harvest time and at different occasions after harvest. In addition, the effects of ethephon dose on yield in the current and subsequent seasons were also evaluated. Results showed that ethephon applications and mechanical harvest did not detrimentally affect plant water status in any of the cultivars studied. Furthermore, either had no effect or had a short temporal decrease effect on leaf gas exchange depending on the cultivar studied although with no consequences for the fruit yield obtained during the current season. Increasing ethephon doses led to fruit yield reductions in the mandarin ‘Orogrande’ trees in subsequent seasons. When trunk-shaker and ethephon applications were combined, however, yields from the late-maturing orange significantly decline in subsequent seasons. Overall, results show that using a trunk shaker is a viable technique to mechanically harvest citrus trees destined to both fresh and industry market and can be considered as an alternative to the traditional manual harvest usually performed under Mediterranean conditions. However, its use cannot be recommended for late-maturing oranges, such as the ‘Navel Lane Late’ in which mature fruit and fruitlets coexist in the tree at the time of harvest.