Health initiatives to target obesity in surface transport industries: review and implications for action

Lifestyle-related chronic diseases pose a considerable burden to the individual and the wider society, with correspondingly negative effects on industry. Obesity is a particular problem for the Australasian road and rail industries where it is associated with specific cardiac and fatigue-related safety risks, and levels are higher than those found in the general population. Despite this recognition, and the introduction of National Standards, very little consensus exists regarding approaches to preventative health for surface transport workers. A review of evidence regarding effective health promotion initiatives is urgently needed to inform best practice in this cohort. This review draws together research informing the scope and effectiveness of health promotion programs, initiatives and interventions targeting overweight and obesity in safety critical surface transport domains including the truck, bus and rail industries. A number of health interventions demonstrated measurable successes, including incentivising, peer mentoring, verbal counselling, development of personalised health profiles, and offer of healthier on-site food choices – some of which also resulted in sizeable return on investment over the long term. &nbsp

The Effect of Increasing Number of People, Rumor-Threshold, Liking-Factor, and Influence on the Spread of Rumors: An Agent-Based Modelling Approach

This paper examines the effect of increasing the population density (number of people), rumor threshold, liking factor, and influence on the rate of the rumor spread in an agent-based model. A rumor is a piece of information disseminated without official verification and it is very difficult to stop it from propagation once it begins. Dissemination takes place when individuals of powerful influence are within a population and have close face-to-face interactions with other individuals. The nature of the rumor is such that it will survive even if the adoption percentage is minimal. Using two agent-based models and statistical tools such as ANOVA, Tukey’s HSD, and Independent Samples T-Test, this study demonstrates the significance of population density, rumor threshold, and influence on the rate of the rumor spread. It argues that the most powerful were the effects of influence and rumor threshold and that the liking factors effects were negligible. Although the findings of this study are significant, the model lacks the necessary complexity to capture real-world rumors and agent behaviors. Further research can be undertaken considering these deficiencies. Keywords: rumor, threshold, liking factor, spread, effect

The influence of auditory feedback on speed choice, violations and comfort in a driving simulation game

Two experiments are reported which explore the relationships between auditory feedback (engine noise), speed choice, driving violations and driver comfort. Participants played a driving simulation game with different levels of auditory feedback in the form of engine noise. In Experiment 1, a between-subjects design revealed that no noise and low levels of engine noise (65 dB(A)) resulted in participants driving at faster speeds than in the medium (75 dB(A)) and high (85 dB(A)) levels of engine noise conditions. The low noise feedback conditions were also associated with decreases in driver comfort. Experiment 2 also demonstrated that low levels of engine noise feedback (no feedback and 70 dB(A)) were associated with increases in driving speed, and driving violations relative to higher levels of feedback (75 dB(A) and 80 dB(A)). Implications exist for current car manufacturing trends which emphasise a growing increase in noise insulation for the driver. © 2011 Elsevier Ltd. All rights reserved

Fatigue and sleepiness: Complex bedfellows

Do you know how to drive a train? If you don’t you probably believe that you have a fair idea of what it’s all about. Forget what you know, or think you know. Trains are heavy and fast but they feel and handle like driving on ice so they take a long time to stop. The braking distances for a typical piece of track are unlike anything you will have experienced before. With that in mind, imagine you were driving with a bit of dew, or grease, or millipede over the track. You would lose traction and slip everywhere. To avoid this, you would need a compensatory driving strategy. You could drive more slowly, or brake sooner, or change how you brake. Your experience and intuition would lead the way. Folks, this is why it’s called “driving by the seat of your pants”..

Sequence distributions in free-radical polymers

This thesis is concerned with demonstrating how the visual representation of the sequence distribution of individual monomer units, of a polymer, that would be observed upon polymerisation, may be utilised in designing and synthesizing polymers with relatively low cell adhesion characteristics, The initial part of this thesis is concerned with demonstrating the use of a computer simulation technique, in illustrating the sequence distribution that would be observed upon the polymerisation of a set of monomers. The power of the computer simulation technique has been demonstrated through the simulation of the sequence distributions of some generic contact lens materials. These generic contact lens materials were chosen simply because in the field of biomaterials their compositions are amongst the most systematically regulated and they present a wide range of compositions. The validity of the computer simulation technique has been assessed through the synthesis and analysis of linear free-radical polymers at different conversions. Two main parameters were examined, that of composition and the number-average sequence lengths of individual monomer units, at various conversions. The polymers were synthesized through the solution polymerisation process. The monomer composition was determined by elemental analysis and 13C nuclear magnetic analysis (NMR). Number-average sequence lengths were determined exclusively through 13C NMR. Although the computer simulation technique provides a visual representation of the monomer sequence distribution up to 100% conversion, these assessments were made on linear polymers at a reasonably high conversion (above 50%) but below 100% conversion of ease for analysis. The analyses proved that the computer simulation technique was reasonably accurate in predicting the sequence distribution of monomer units, upon polymerisation, in the polymer.An approach has been presented which allows one to manipulate the use of monomers, with their reactivity ratios, thereby enabling us to design polymers with controlled sequence distributions.Hydrogel membranes, with relatively controlled sequence distributions and polymerised to 100% conversion, were synthesized to represent prospective biomaterials. Cell adhesion studies were used as a biological probe to investigate the susceptibility of the surface of these membranes to cell adhesion. This was necessary in order to assess the surface biocompatibility or biotolerance of these prospective biomaterials

A Brief Look at the Natural Conditions of the Hindu Kesh Mountain Range

Afghanistan is a country that is located almost in the center of the Asian continent, it is a landlocked country and in terms of land structure, it introduces a mountainous country among the countries of the world. This country has been of great economic and political importance due to its important geographical and strategic location in different periods of history. The land structure of Afghanistan consists of steep mountains full of snow, deep valleys, raging seas, high levels, hills, plains and deserts, each of which It has special features. The range of mountains that are present in all its shares, generally extends from northeast to southwest. Some of the northeastern and central parts of the country are made up of large high plains, the backbone of which is the Hindu Kush mountain. The Hindu Kush mountain is located along the Pamir mountain chain, extending from the northeast to the southwest and the central regions of Afghanistan cover a wide area, and from this part, its width also increases, so the Hindu Kush mountains are divided into two parts, the eastern and the western is divided. Knowing and knowing about the Hindu Kush mountain range, its natural conditions and obtaining information about the strategic and strategic importance of this mountain range

Synaptic metaplasticity underlies tetanic potentiation in Lymnaea: a novel paradigm

We present a mathematical model which explains and interprets a novel form of short-term potentiation, which was found to be use-, but not time-dependent, in experiments done on Lymnaea neurons. The high degree of potentiation is explained using a model of synaptic metaplasticity, while the use-dependence (which is critically reliant on the presence of kinase in the experiment) is explained using a model of a stochastic and bistable biological switch.Comment: 12 pages, 7 figures, to appear in PLoS One (2013