A modified LLC panel unit root test of the PPP hypothesis

In a recent study, Westerlund (Empir Econ 37:517–531, 2009) shows that the performance of the popular LLC (Levin et al., J Econ 108:1–24, 2002) panel unit root test depends critically on the choice of lag truncation used when correcting for serial correlation, and that it is only when this parameter is set as a function of time that the power raises above size. The purpose of the current paper is to propose a modified test that does not suffer from this drawback. The new test is not only simpler to compute but also superior in terms of small-sample performance, which is illustrated using an example purchasing power parity for less developed countries.

Testing for unit roots in panel time-series models with multiple level breaks

This paper proposes two new unit root tests that are appropriate in the presence of an unknown number of structural breaks in the level of the data. One is based on a single time series and the other is based on a panel of multiple series. For the estimation of the number of breaks and their locations, a simple procedure based on outlier detection is proposed. The limiting distributions of the tests are derived and evaluated in small samples using simulation experiments. The implementation of the tests is illustrated using as an example purchasing power parity.

Modelling attribute dependencies in single unit game combat settings

The relative strengths of individual units, described as attributes, determine the outcome during unit conflicts involving units in the armies of opponents in large strategy games. We describe a process for developing predictive models of the outcome for such conflicts where combat involves single unit adversaries where each unit is defined in terms of 4 fundamental attributes. These attributes: range, speed, health and damage are common to unit descriptions in many successful real-time strategy games. Our analysis process identifies three phases of game play with invariant properties that hold throughout each phase. We demonstrate the utility of this analysis by creating a model that predicts game outcomes. Predictions are validated against the game simulation. The game outcomes are explicitly related to the attributes of the two units involved, highlighting the significance and role of each attribute.

Examining adverse events after intensive care unit discharge : outcomes from a pilot questionnaire

Adverse events are common in acute clinical settings but little is known about these events occurring after Intensive Care discharge. This study aimed to develop a reliable and valid tool for exploring clinicians’ opinions of factors associated with post-Intensive Care adverse events. A convenience sample of Australian Intensive Care Liaison Nurses was invited to complete and appraise a questionnaire using structured guidelines. Content validity and internal consistency were assessed.

Twelve Intensive Care Liaison Nurses completed the questionnaire. Cronbach?s alpha coefficient showed high internal consistency for the questionnaire; all 24 items on the questionnaire had coefficients greater than 0.852. The content validity index of the questionnaire overall was 0.76.

The post-Intensive Care adverse events questionnaire demonstrated reliability and validity. It is a tool that can be used to explore clinicians? opinions of factors associated with these events. The tool is important as it facilitates further insight into the causes of post-Intensive Care adverse events.

Patient comfort in the intensive care unit : a multicentre, binational point prevalence study of analgesia, sedation and delirium management

Objective: To measure the prevalence of assessment and management practices for analgesia, sedation and delirium in patients in Australian and New Zealand intensive care units.
Materials and Methods: We developed survey items from a modified Delphi panel and included them in a binational, point prevalence study. We used a standard case report form to capture retrospective patient data on management of analgesia, sedation and delirium at the end of a 4-hour period on the study day. Other data were collected during independent assessment of patient status and medication requirements.
Results: Data were collected on 569 patients in 41 ICUs. Pain assessment was documented in the 4 hours before study observation in 46% of patients. Of 319 assessable patients, 16% had moderate pain and 6% had severe pain. Routine sedation assessment using a scale was recorded in 63% of intubated and ventilated patients. When assessed, 38% were alert and calm, or drowsy and rousable, 22% were lightly to moderately sedated, 31% were deeply sedated (66% of these had a documented indication), and 9% were agitated or restless. Sedatives were titrated to a target level in 42% of patients. Routine assessment of delirium occurred in 3%, and at study assessment 9% had delirium. Wrist or arm restraints were used for 7% of patients.
Conclusions: Only two-thirds of sedated patients had their sedation levels formally assessed, half had pain assessed and very few had formal assessment of delirium. Our description of current practices, and other observational data, may help in planning further research in this area.

Innovative unit delivery : the supported cloud

Deakin University has recently moved to an academic calendar of three trimesters. This change aims to provide students with greater flexibility to plan their study around work or life commitments, create options for students to commence their degree and enable students to fast track their study. It has been found for students in the Bachelor of Construction Management that engagement and satisfaction during summer (Trimester 3) are less than when those same units are delivered during other trimesters. This research addresses the use of Supported Cloud learning to improve learning and the relationship with students. The School of Architecture and Built Environment used two units as case studies to examine different innovative unit delivery strategies that combined cloud and located learning. The research design included evaluation surveys, questionnaires, and semi-structured interviews as well as reflection by participating teachers. The findings show that students’ results are improved when the cloud based learning is supported by well-developed resources, structured delivery and availability of some face-to-face contacts. This innovation will serve as a benchmark for Cloud delivery in the School in all trimesters.

Innovative unit delivery : the supported cloud

Deakin University has recently moved to an academic calendar of three trimesters. This change aims to provide students with greater flexibility to plan their study around work or life commitments, create options for students to commence their degree and enable students to fast track their study. It has been found for students in the Bachelor of Construction Management that engagement and satisfaction during summer (Trimester 3) are less than when those same units are delivered during other trimesters. This research addresses the use of Supported Cloud learning to improve learning and the relationship with students. The School of Architecture and Built Environment used two units as case studies to examine different innovative unit delivery strategies that combined cloud and located learning. The research design included evaluation surveys, questionnaires, and semi-structured interviews as well as reflection by participating teachers. The findings show that students’ results are improved when the cloud based learning is supported by well-developed resources, structured delivery and availability of some face-to-face contacts. This innovation will serve as a benchmark for Cloud delivery in the School in all trimesters.

Children’s experiences of acute hospitalisation to a paediatric emergency and assessment unit – A qualitative study

Short-stay treatment has become a popular form of care as a strategy to cope with increased demands on health care. There is little research that considers children’s experiences of acute hospitalisation to a short-stay care facility such as a Paediatric Emergency and Assessment Unit (PEAU). This study explored the experiences of eight children aged 8–10 years. Semi-structured interviews were carried out to investigate the children’s own experiences of being hospitalised in a PEAU. Thematic content analyses were used. Three major themes were identified: the children’s understanding of disease, treatment and procedures; the children’s experiences of health-care personnel and the PEAU and transformation of everyday life into the settings of the hospital. The children identified the hospital stay as an overall positive experience. The children took part in leisure activities as they would at home and enjoyed time together with their parents while in hospital. In their conversations with staff they adapted to professional terms that they did not necessarily understand. They did not differentiate between professionals. Further work should be considered to clarify the consequences of this. This study has provided some limited insight into the child’s experiences of acute hospitalisation, which should inform nursing care.

Validating a teaching survey which drives increased response rates in a unit survey

At Curtin University, student perceptions of teaching and learning are gathered and reported online through eVALUate, a system that includes separate unit and teaching surveys. This article reports the development and validation of one of those surveys, the eVALUate teaching survey, which was developed based on the research literature on excellent teaching and evaluation. Since its development in 2006, repeated statistical testing using progressively larger samples has shown that the survey is valid and reliable. Moreover, the way in which the teaching survey is deployed within eVALUate, appended to the unit survey, which provides crucial institutional data, has significantly increased university response rates. This validated instrument is used for self-reflection, professional development, and rewarding staff.

Consumer response to unit pricing for mobile telephony

This project is a co-operative study between ACCAN and Deakin University. It focuses on Unit Pricing, the practice of displaying the price of goods or services based on a standard quantity, to allow a direct comparison between competitive offers. This study aimed at gauging whether the new unit pricing information for mobile phone contracts assists consumers in assessing and comparing the value provided across alternative contracts within and between suppliers. Some 24 in-depth interviews were conducted with consumers who had recently bought or renewed a mobile phone contract.
The research showed that most consumers could use unit pricing information and some found it useful. Where consumers’ plans had unlimited or infinite capacity, unit pricing information was not relevant. Many consumers preferred voice allowances to be expressed in minutes, rather than in dollar allowances. Data was the most problematic category, as consumers typically had only limited understanding of the amount of data that various applications used. Most did have a broad understanding of what total capacity in data they would need, typically expressed in gigabytes.
Consumers commonly sought simplicity in deciding on which plan they would purchase or renew. A key issue for consumers was not “going over”, that is not exceeding their call, text or data allowances. For that reason, they were prepared to choose a plan that commonly resulted in them not using their full allowances each month. Some consumers used Apps on their smartphones to monitor their usage. Not all consumers had experienced advisory messages about nearing the limits of their plan’s allowances.
The Report recommended that:

R1. Unit pricing should be maintained
R2. Where unit pricing is provided for call costs, these should be expressed in terms of a one-minute call.
R3 Unit pricing for data should be expressed in terms of gigabytes or part thereof.
R4 In advertising mobile phone plans and at point of sales, customers should be provided with three levels of information – 1) overall plan features, 2) unit pricing information and 3) a data calculator.
R5 Level 2 and 3 information should be provided in a standard format across the industry, enabling consumers to make ready comparisons between plans and between competitive offers from different providers.
R6. Continuing public education is needed.
R7. Warnings about going over should always include the date when the allowance period ends and tell consumers what the rate will be if they “go over” based on the Level 2 information.
R8. The Consumer Protection Code should be reviewed in the light of these findings and recommendations.