The impact of computer display height and desk design on 3D posture during information technology work by young adults

Computer display height and desk design to allow forearm support are two critical design features of workstations for information technology tasks. However there is currently no 3D description of head and neck posture with different computer display heights and no direct comparison to paper based information technology tasks. There is also inconsistent evidence on the effect of forearm support on posture and no evidence on whether these features interact. This study compared the 3D head, neck and upper limb postures of 18 male and 18 female young adults whilst working with different display and desk design conditions. There was no substantial interaction between display height and desk design. Lower display heights increased head and neck flexion with more spinal asymmetry when working with paper. The curved desk, designed to provide forearm support, increased scapula elevation/protraction and shoulder flexion/abduction.

A model of price discovery and market design : theory and empirical evidence

An essential function of derivative markets is price discovery. A model is proposed to incorporate a comprehensive dynamic interaction between price size coordinates of orders and trades. An example of application of the model and its effect on price discovery is discussed.

Technology student learning preferences and the design of flexible learning programs

The learning preferences of three hundred and thirty eight technology students enrolled in sub-degree programs at an Australian institution of Technical and Further Education were tested using the Canfield Learning Styles Inventory (CLSI). The results have been interpreted in a learning preferences framework and provide supportive evidence for the preferences factors of print-nonprint, collaborative, dependent,and autonomous learning identified by Sadler-Smith & Riding (1999). Although there search focussed on learning preferences the analysis also indicated support for the Wholist-Analytic cognitive style proposed by Riding & Cheema (1991). Gender differences were shown for the Interest subscales of the CLSI. Age-group differences were shown for several Conditions of Learning and Modes of Learning subscales. Implications for the design of training programs, and the skills that may need to be developed in technology learners to enable effective use of flexible delivery, are also discussed.

Wetland reservation status and reserve design in the Wimmera, Victoria

Article found under "Notes and Abstracts" Pdf/hard copy miss labelled as vol. 2 no.4

A field test of the diversity-openness moderator model in newly formed groups: openness to diversity affects group decision effectiveness and interaction patterns

Detrimental effects of diversity in workgroups has frequently been observed but research identifying the factors that lead to negative or positive effects in heterogeneous groups is lacking. The perceived dissimilarity openness moderator model provides one explanation of the process by which diversity influences group affective, behavioral, and cognitive outcomes. Specifically the model identifies individual, group, and organizational openness as moderating the effects of diversity in workgroups. In this paper evidence is provided from a field study that increased openness to perceived dissimilarity leads to better outcomes in newly formed groups. This study also constitutes a significant building block toward the development of theory concerning the moderating variables of the relationship between diversity and group processes, and outcomes of organizations.

The measurement of trust in inter-organisational networks: a conceptual framework and research design

The aim of this paper is to outline a conceptual model and research design for measuring trust in inter-organisational networks which has the potential to be a ‘blueprint’ for a large-scale, multilevel study of trust in networks. Inter-organisational networks are increasingly recognised as a means to achieve economic and social exchange yet, how these networks operate is less widely understood. Trust is widely identified as being essential to the functioning of networks forms of organisation. In order to analyse trust in networks the Social Relations Model (Kenny 1994) of interpersonal perception is applied here. Insights from this model are used to specify relevant components of trust; and extended by incorporating measures of trust at the level of the work group.

Evidence for a common role for the serine-type Plasmodium falciparum serine repeat antigen proteases : implications for vaccine and drug design

Serine repeat antigens (SERAs) are a family of secreted “cysteine-like” proteases of Plasmodium parasites. Several SERAs possess an atypical active-site serine residue in place of the canonical cysteine. The human malaria parasite Plasmodium falciparum possesses six “serine-type” (SERA1 to SERA5 and SERA9) and three “cysteine-type” (SERA6 to SERA8) SERAs. Here, we investigate the importance of the serine-type SERAs to blood-stage parasite development and examine the extent of functional redundancy among this group. We attempted to knock out the four P. falciparum serine-type SERA genes that have not been disrupted previously. SERA1, SERA4, and SERA9 knockout lines were generated, while only SERA5, the most strongly expressed member of the SERA family, remained refractory to genetic deletion. Interestingly, we discovered that while SERA4-null parasites completed the blood-stage cycle normally, they exhibited a twofold increase in the level of SERA5 mRNA. The inability to disrupt SERA5 and the apparent compensatory increase in SERA5 expression in response to the deletion of SERA4 provides evidence for an important blood-stage function for the serine-type SERAs and supports the notion of functional redundancy among this group. Such redundancy is consistent with our phylogenetic analysis, which reveals a monophyletic grouping of the serine-type SERAs across the genus Plasmodium and a predominance of postspeciation expansion. While SERA5 is to some extent further validated as a target for vaccine and drug development, our data suggest that the expression level of other serine-type SERAs is the only barrier to escape from anti-SERA5-specific interventions.

Resistance exercise and insulin regulate AS160 and interaction with 14-3-3 in human skeletal muscle

A single bout of aerobic exercise can enhance insulin action, but whether a similar effect occurs after resistance exercise is unknown. Hyperinsulinemic-euglycemic clamps were performed on eight male subjects at rest and after a single bout and three repeated bouts of resistance exercise over 7 days. Skeletal muscle biopsies were taken before and after the clamp and immediately after a single exercise bout. Whole-body insulin action measured by glucose infusion rate decreased (P < 0.05) after a single exercise bout, whereas in response to repeated bouts of resistance exercise, the glucose infusion rate was similar to the rest trial. In skeletal muscle, Akt substrate of 160 kDa (AS160) phosphorylation, an Akt substrate implicated in the regulation of GLUT4 translocation, and its interaction with 14-3-3 was decreased (P < 0.05) only after a single exercise bout. Insulin increased (P < 0.05) phosphorylation of AS160 and its interaction with 14-3-3, but the insulin response was not influenced by resistance exercise. Phosphorylation of insulin receptor substrate-1 and Akt were similar to changes in AS160 phosphorylation after exercise and/or insulin. In conclusion, a single bout of resistance exercise impairs whole-body insulin action. Regulation of AS160 and interaction with 14-3-3 in skeletal muscle are influenced by resistance exercise and insulin but do not fully explain the effect of resistance exercise on whole-body insulin action.

Job stress in the law enforcement sector: comparing the linear, non-linear and interaction effects of working conditions

This study addresses a gap in much of the research involving stress among high-risk occupations by investigating the effects of linear, non-linear and interaction models in a law enforcement organization that has undertaken a series of efficiency-driven organizational reforms. The results of a survey involving 2085 police officers indicated that the demand-control-support model provided good utility in predicting an officer's satisfaction, commitment and well-being. In particular, social support and job control were closely associated with all three outcome variables. Although the demand × control/support interactions were not identified in the data, there was some support for the curvilinear effects of job demands. The results have implications for the organizational conditions that need to be addressed in contemporary policing environments where new public management strategies have had widespread affects on the social and organizational context in which policing takes place.

The global classroom : effective subject and pedagogy design as positive aspects of globalization

The nature of pedagogy and the collaboration between international parties in subject design ameliorates some of the more negative characteristics of globalized education. I argue that the nature of globalization is to be found in the small and ongoing practices that constitute collaboration between differing parties. In this way, what globalization means is in fact constantly negotiated contingent and never settled. My argument is that reductive critiques of internationalization are far too simplistic. The example of EME 150 and the uptake through the Malaysian educational system of some of its components is an example not of ‘imposition’ or ‘imperialism’ but rather of a more negotiated and collaborative pedagogy that points to some of the benefits of cooperation, collaboration and by inference of globalization.