The Loss of Some Strength Characteristics of Coated Magazine Paper as a Result of Exposure to Elevated Temperatures

Introduction The purpose of this work is to investigate the effect that varying degrees of temperature have on the strength properties of coated magazine stock. Paper of this type encounters high temperature conditions primarily in the ink drying operations following the printing of the web. The strength with which the paper meets the cutting, folding and binding methods which follow the drying operation are of paramount importance to the printer. Throughout the work, attempts were made to assimilate conditions encountered in present day commercial practice

View from the virtual pocket: using virtual simulation and video game technology to assess the situation awareness and decision making of NCAA quarterbacks

View from the Virtual Pocket is a proof of concept study in which a theoretical proposition about situation awareness in time constrained decision making is wedded to the affordances of a computer based simulation to ascertain if the real world decision making in the pocket of an NCAA quarterback can be modeled successfully for simulation based learning. The researcher used the Situation Awareness Global Assessment Technique (SAGAT) for the purposes of (a) analyzing the situation awareness requirements for expert decision making and (b) to empirically assess the viability of using a computer based football simulator as a SAGAT simulation tool. The highlight of this study is a Goal Directed Task Analysis (GDTA) developed in conjunction with some of the most recognized names in professional and collegiate football. The results of the (GDTA), a form of cognitive task analysis, defined the information requirements for expert quarterbacking and shed light on the enormous cognitive demands placed on the quarterback. The researcher was able to create, categorize and program SAGAT queries from the Goal Directed Task Analysis into an innovative virtual reality simulator called the PlayAction Simulator PC. Once the queries were programmed and the plays were published, the Researcher evaluated the simulator\u27s ability to (a) stop a simulated repetition at random points to ask probing questions aimed at evaluating a quarterback\u27s SA and (b) create the ecological validity required to extapolate the informating needed to measure situation awareness in the domain of the quarterback. The results of this inquiry (a) identified the goals of the quarterback, the decisions the quarterback has to make to achieve those goals and the information the quarterback needs to know in order to make accurate decisions, (b) validated the ability of the interactive virtual simulator to be used as a SAGAT Simulation tool in the assessment of the quarterback\u27s situation awareness. Additionally, the Goal Directed Task Analysis led to the creation of the Decision Making Model 4 QB\u27s. The model, a hybrid of the Endsley (2000a; 2000b) SA Model and the Klein (1998) RPD Model, represents a viable and testable description of the situation assessment process that quarterbacks use to formulate an aerial hypothesis. Inherent in this new model is a proposition about the role of unconscious competence in the optimization of serially generated options

Memorialising the Holocaust: How historical exhibitions can reshape our understanding of history.

There is no denying that history is multi-faceted and complex. It is complex as it can be viewed, interpreted and remembered in innumerable ways.  This essay, for example, will critically trace the way Sydney Jewish Museum Holocaust Exhibition memorialises the Holocaust in an arguably post-modern manner. The Holocaust was one of the most detrimental acts of genocide documented in history and as aforementioned, the way modern society memorialises and remembers the genocide of the Jewish people greatly varies. Thus, this essay will attempt to argue that society cannot understand our past without historical exhibitions which allow us to remember past mistakes and help society move forward. This essay will likewise highlight, through critically analysing the memorialisation of the Holocaust, how history can perhaps change based on whether it is remembered in a post-modern or modern way. Through critically analysing the role of historical exhibitions in remembering the past with a focus on the memorialisation of the Holocaust, this essay will challenge the concept of shared history and memorialising the past which ultimately moulds the present moment we live in.

COMPARISON OF BIOMECHANICAL DATA OF A SPRINT CYCLIST IN THE VELODROME AND IN THE LABORATORY

The aim of this study was to develop a reliable testing method to measure biomechanical variables that describe sprint cycling performance on a velodrome track, compared to on an ergometer in a laboratory. Seven elite track sprint cyclists performed sprints on an isokinetic ergometer in a laboratory and over half lap distances in a velodrome. Key biomechanical variables characterising sprint cycling were measured. Relatively small differences in the variables were found between the ergometer and track sprints. However the static task constraints of ergometer cycling led the cyclists to adopt a different position which seemed to allow them to increase overall power output and rate of force development. Future research is needed to assess whether the differences in joint angles and crank powers were due to the different environmental and task constraints between the ergometer and the track bicycle sprints

Processing social media text for the quantamental analyses of cryptoasset time series

This thesis analyses social media text to identify which events and concerns are associated with changes between phases of rising and falling cryptoasset prices. A new cryptoasset classification system, based on token functionality, highlights Bitcoin as the largest example of a 'crypto-transaction' system and Ethereum as the largest example of a 'crypto-fuel' system. The price of ether is only weakly correlated with that of bitcoin (Spearman's rho 0.3849). Both bitcoin and ether show distinct phases of rising or falling prices and have a large, dedicated social media forum on Reddit. A process is developed to extract events and concerns discussed on social media associated with these different phases of price movement. This innovative data-driven approach circumvents the need to pre-judge social media metrics. First, a new, non-parametric Data-Driven Phasic Word Identification methodology is developed to find words associated with the phase of declining bitcoin prices in 2017-18. This approach is further developed to find the context of these words, from which topics are inferred. Then, neural networks (word2vec) are applied to evolve analysis from extracting words to extracting topics. Finally, this work enables the development of a framework for identifying which events and concerns are plausible causes of changes between different phases in the ether and bitcoin price series. Consistent with Bitcoin providing a form of money and Ethereum providing a platform for developing applications, these results show the one-off effect of regulatory bans on bitcoin, and the recurring effects of rival innovations on ether price. The results also suggest the influence of technical traders, captured through market price discourse, on both cryptoassets. This thesis demonstrates the value of a quantamental approach to the analysis of cryptoasset prices

The effects of strength training on intermuscular coordination during maximal cycling

In natural movement tasks individual muscles are seldom required to generate force in isolation and instead most functional movements arise from the cooperation of several muscles acting together – intermuscular coordination. Contemporary studies of movement coordination are often undertaken using the ecological dynamics theoretical framework and Newell’s model of constraints. Ecological dynamics examines human performance from a person-environment scale of analysis considering how people interact with a specific task and the performance environment, and the role these constraints play in the emergent coordination patterns. Pedalling is an ideal task to study intermuscular coordination since it is a natural movement task that can be accurately manipulated. Sprint cyclists often undertake gym-based strength training to increase muscle strength and size. Therefore, the aim of this programme of research was to understand how cyclists adapt their intermuscular coordination patterns during maximal cycling owing to changing organismic constraints (muscle size, strength and fatigue) caused by the gym-based strength training using the theoretical framework of ecological dynamics. In accordance with the theoretical framework of ecological dynamics and Newell’s model of constraints this programme of research highlighted the influence of the constraints acting on the cyclists’ coordination patterns that emerge. Different movement and coordination patterns were observed for maximal cycling when the task constraints were changed from sprinting on a fixed ergometer in the laboratory to a track bicycle in the velodrome. This finding implies it is important to undertake biomechanical analyses of movement organisation in elite sports practice in a representative environment. Also, following a gym-based strength training intervention the cyclists’ crank power increased, but there were no changes in joint moments, power or muscle activation which suggested that the cyclists might adopt individual coordination strategies following the change in their organismic constraints after the strength training intervention

The vulnerability of nuclear plants during military conflict: Ukraine technical briefing

Nuclear power plants present unique hazards in terms of the potential consequences resulting from a severe accident. Nuclear reactors and their associated high level spent fuel stores are vulnerable to natural disasters, as Fukushima Daiichi showed, but they are also vulnerable in times of conflict.This brief seeks to explain some of the hazards and potential consequences that exist today in Ukraine

Erratum: Developing a Cryptocurrency Assessment Framework: Function over Form

Erratum.  The original article, “Developing a Cryptocurrency Assessment Framework: Function over Form,” DOI 10.5915/LEDGER.2018.121 was published with an institutionally-controlled BTC address which could not be used for digitally signing the final document. The address has been replaced and now appears at the bottom of both the new document and this erratum notice. Digital signatures for both will be published alongside these

LINEARITY OF THE RATIO OF FORCES-VELOCITY RELATIONSHIP IS NOT RELATED TO INITIAL ACCELERATION PERFORMANCE IN SPRINTING

The relationship between the linearity of the ratio of forces (RF)-horizontal velocity (vH) profile and initial acceleration (IA) performance was investigated in trained sprinters. Ground reaction force data from the IA phase of a maximal sprint from a block start were analysed. The coefficient of determination of the linear trendline fitted to four step-averaged values of RF and vH provided a measure of linearity. Semi-partial correlations (sr) accounting for block phase performance revealed a weak negative relationship between linearity of the RF-vH profile and performance over the first four steps (sr = -0.11), while mean RF displayed a very strong positive relationship with performance (sr = 0.80). Sprinters and coaches should therefore prioritise the production of a high RF during IA above trying to ensure a consistent decline in RF as velocity increases