Factors related to the satisfaction and performance of temporary employees.

Previous research suggests that whether temporary employees are voluntary or involuntary in their choice to pursue temporary work is related to satisfaction levels. This study investigated whether voluntarily or involuntarily pursuing temporary work is related to satisfaction and performance. Previous work has classified individuals as voluntary or involuntary when operationalizing the decision to pursue temporary work. This study used a more complex measure that addressed individuals' reasons for pursuing temporary work. Analyses were conducted using the complex measure and a traditional classification. The results suggest 4 conclusions: (a) a complex measure may be preferred over a dichotomous classification when operationalizing the decision to pursue temporary work, (b) individuals who are involuntarily pursuing temporary work may be less satisfied, (c) whether an individual voluntarily pursues temporary work appears to be unrelated to satisfaction levels, and (d) whether an individual is voluntarily or involuntarily pursuing temporary work is unrelated to performance. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Linguistic immediacy of schizophrenics in different proxemic conditions.

The linguistic immediacy of 32 schizophrenic and 32 nonschizophrenic psychiatric patients was observed as Ss sat in 1 of 4 proxemic positions during a short interview. Positions varied in terms of distance between patients and interviewer (near vs far) and direction of the interviewer's eye gaze (gazing continuously vs never looking at patients). Results indicate that the immediacy of schizophrenics' verbal communication varies as a function of patient–interviewer distance and orientation. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Development of a simulation model for predicting dynamic behaviour of heat pump with nonazeotropic refrigerant mixtures

A lumped parameter model has been developed to predict the dynamic behaviour of heat pumps with nonazeotropic refrigerant mixtures. The mathematical formulation of this model is based on mass, momentum, and energy balances. Several constitutive relationships are adopted in this model to describe the different phenomena encountered in heat pump operation. In addition, the proposed model includes the consequent effect of different refrigerant flow regimes and slip between two phases. Numerical results indicate that the present model predicts fairly the heat pump dynamic response and that it compares well with experimental data.     

In vivo measurements of neurotransmitters by microdialysis sampling

The brain contains a vast network of neurons that connect with each other at specialized junctions called synapses.A synapse consists of a presynaptic terminal (the "sending"neuron) and a postsynaptic bouton (the "receiving" neuron)that are separated by a gap of 5-50 nm (Figure 1). Chemicals released into this synaptic gap interact with receptors on the postsynaptic neuron. This leads to intracellular changes in the postsynaptic neuron-for example, an altered membrane potential or gene expression. The chemical signal is terminated by transporter proteins that transfer transmitter molecules across the membrane to the intracellular space (a process known as "reuptake")or enzymes that degrade the transmitter in the vicinity of the synapse (Figure 1). This classical view of neurotransmission might be considered point-to-point or"wired" communication because neurons communicate only with neurons to which they are specifically connected. In addition,neurotransmitters can activate receptors at more distant sites either by escaping the synapse or by being directly released into extrasynaptic space. This longer-range communication has been called "volume" transmission (1, S1; S references can be found in Supporting Information). All brain functions, from controlling movement to emotions, involve these two forms of chemical communication.Analytical chemistry has an important role to play in developing our understanding of the brain by providing tools for identification and measurement of the many chemicals involved in neurotransmission.