Tubes Containing String Modules in Symmetric Special Multiserial Algebras

We provide a method for determining the existence and ranks of tubes in the stable Auslander-Reiten quiver of symmetric special multiserial algebras using only the information from the underlying Brauer configuration. Essentially, we generalise the notion of a Green walk around a Brauer graph to the notion of a Green `hyperwalk' around a Brauer configuration, and show that these walks determine the number and rank of some of the stable tubes of the corresponding algebra. This description includes both tame and wild symmetric special multiserial algebras. We also provide a description of additional rank two tubes in both tame and wild algebras that do not arise from Green hyperwalks, but which nevertheless contain string modules at the mouth.Comment: 45 page

Grouping Individual Investment Preferences in Retirement Savings: A Cluster Analysis of a USS Members Risk Attitude Survey

Cluster analysis is used to identify homogeneous groups of members of USS in terms of risk attitudes. There are two distinct clusters of members in their 40s and 50s. One had previously ‘engaged’ with USS by making additional voluntary contributions. It typically had higher pay, longer tenure, less interest in ethical investing, lower risk capacity, a higher percentage of males, and a higher percentage of academics than members of the ‘disengaged’ cluster. Conditioning only on the attitude to risk responses, there are 18 clusters, with similar but not identical membership, depending on which clustering method is used. The differences in risk aversion across the 18 clusters could be explained largely by differences in the percentage of females and the percentage of couples. Risk aversion increases as the percentage of females in the cluster increases, while it reduces as the percentage of couples increases because of greater risk sharing within the household. Characteristics that other studies have found important determinants of risk attitudes, such as age, income and (pension) wealth, do not turn out to be as significant for USS members. Further, despite being on average more highly educated than the general population, USS members are marginally more risk averse than the general population, controlling for salary, although the difference is not significant

Electron impact promoted fragmentation of alkyl-N-(1-Phenylethyl)-carbamates of primary, secondary and tertiary alcohols

Mass spectra of alkyl carbamates derived from primary, secondary, and teriary alcohols by use of deuterium labeling and high resolution mass spectroscop

One size fits all: How many default funds does a pension scheme need?

In this paper, we analyse the number of default investment funds appropriate for an occupational defined contribution pension scheme. Using a unique dataset of member risk attitudes and characteristics from a survey of a large UK pension scheme, we apply cluster analysis to identify two distinct groups of members in their 40s and 50s. Further analysis indicated that the risk attitudes of the two groups were not significantly different, allowing us to conclude that a single lifestyle default fund is appropriate

A Complexity Measure for Continuous Time Quantum Algorithms

We consider unitary dynamical evolutions on n qubits caused by time dependent pair-interaction Hamiltonians and show that the running time of a parallelized two-qubit gate network simulating the evolution is given by the time integral over the chromatic index of the interaction graph. This defines a complexity measure of continuous and discrete quantum algorithms which are in exact one-to-one correspondence. Furthermore we prove a lower bound on the growth of large-scale entanglement depending on the chromatic index.Comment: 6 pages, Revte

The consequences of executive turnover

The high rate of executive turnover in the healthcare industry is a major issue for health service organisations and their staff both in Australia and internationally. In the course of planning a research project examining nurse turnover at the clinical level within three Australian States/Territories, the researchers became aware of frequent executive turnover at all levels (State Department of Health, Area Health Service, hospital). Over a period of approximately 2 years there were 41 executives occupying 18 different positions, highlighting the scope of this issue in Australia. Few studies have examined the causes and consequences of this phenomenon in depth. Factors such as age, gender, education, lack of career advancement opportunities and remuneration have all been identified in the literature as important contributors to executive turnover. High turnover rates have been found to be associated with a number of negative consequences, including organisational instability, high financial costs, loss of human capital and adverse effects on staff morale and patient care. While the use of 'acting' roles may assist in filling executive positions on a temporary basis, consequences for the rest of the organisation are associated with their extended use. Steps which health services planners may take to attempt to minimise executive turnover include providing staff members with appropriate challenges and opportunities for growth and ensuring that a clear succession plan is in place to minimise the impact for the organisation and its staff. © The Author(s) 2011

Heat treatment and hydration of calcium sulfate

Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1937.MIT copy bound with: Catalytic polymerization of ethylene with boron tri-chloride / by Karekin G. Arabian [1937] -- Chemical treatment of paper stock to promote water drainage / by Louis D. Bloom [1937] -- The rectification of boron trichloride solutions / by R.J. Brauer, D. Fulton [1937] -- Heat transfer coefficients in trombone coolers / by Raymond Dreselly and Rolf E. Schneider /[1937] -- A study of the corrosion of zinc / by James Marvin Ewell [1937]Includes bibliographical references (leaves 53-54).by Mortimer D. Abbott and Winthrop D. Comley.B.S

Churn: Patient turnover and mix

Patient throughput and casemix changes on nursing wards are little understood aspects of nursing's responsibility for nursing wards/units as hospital operations. In this study, the movement of patients on and off wards in 27 Australian public hospitals (286 wards) were analyzed over a 5-year period. Casemix change at the nursing unit level was also examined. In the data here, medical/surgical patients moved on average more than twice in an average hospital stay of only about 4 days. The absence of ward-level metrics compromises the ability of nursing unit/ward managers to meet their own efficiency and quality standards. Measurements of churn would give nurses another way to talk about the work of nursing to senior management and would give nurse executives a way to describe hospital operations and throughput and the impact on staff, patients, and resource allocation

No effect of arm exercise on diaphragmatic fatigue or ventilatory constraint in Paralympic athletes with cervical spinal cord injury

Cervical spinal cord injury (CSCI) results in a decrease in the capacity of the lungs and chest wall for pressure, volume, and airflow generation. We asked whether such impairments might increase the potential for exercise-induced diaphragmatic fatigue and mechanical ventilatory constraint in this population. Seven Paralympic wheelchair rugby players (mean ± SD peak oxygen uptake = 16.9 ± 4.9 ml·kg–1·min–1) with traumatic CSCI (C5–C7) performed arm-crank exercise to the limit of tolerance at 90% of their predetermined peak work rate. Diaphragm function was assessed before and 15 and 30 min after exercise by measuring the twitch transdiaphragmatic pressure (Pdi,tw) response to bilateral anterolateral magnetic stimulation of the phrenic nerves. Ventilatory constraint was assessed by measuring the tidal flow volume responses to exercise in relation to the maximal flow volume envelope. Pdi,tw was not different from baseline at any time after exercise (unpotentiated Pdi,tw = 19.3 ± 5.6 cmH2O at baseline, 19.8 ± 5.0 cmH2O at 15 min after exercise, and 19.4 ± 5.7 cmH2O at 30 min after exercise; P = 0.16). During exercise, there was a sudden, sustained rise in operating lung volumes and an eightfold increase in the work of breathing. However, only two subjects showed expiratory flow limitation, and there was substantial capacity to increase both flow and volume (<50% of maximal breathing reserve). In conclusion, highly trained athletes with CSCI do not develop exercise-induced diaphragmatic fatigue and rarely reach mechanical ventilatory constraint

High fat diet rescues disturbances to metabolic homeostasis and survival in the Id2 null mouse in a sex-specific manner

Inhibitor of DNA binding 2 (ID2) is a helix-loop-helix transcriptional repressor rhythmically expressed in many adult tissues. Our previous studies have demonstrated that Id2 null mice have altered expression of circadian genes involved in lipid metabolism, altered circadian feeding behavior, and sex-specific enhancement of insulin sensitivity and elevated glucose uptake in skeletal muscle and brown adipose tissue. Here we further characterized the Id2−/− mouse metabolic phenotype in a sex-specific context and under low and high fat diets, and examined metabolic and endocrine parameters associated with lipid and glucose metabolism. Under the low-fat diet Id2−/− mice showed decreased weight gain, reduced gonadal fat mass, and a lower survival rate. Under the high-fat diet, body weight and gonadal fat gain of Id2−/− male mice was comparable to control mice and survival rate improved markedly. Furthermore, the high-fat diet treated Id2−/− male mice lost the enhanced glucose tolerance feature observed in the other Id2−/− groups, and there was a sex-specific difference in white adipose tissue storage of Id2−/− mice. Additionally, a distinct pattern of hepatic lipid accumulation was observed in Id2−/− males: low lipids on the low-fat diet and steatosis on the high-fat diet. In summary, these data provides valuable insights into the impact of Id2 deficiency on metabolic homeostasis of mice in a sex-specific manner