Engineering of 3D self-directed quantum dot ordering in multilayer InGaAs/GaAs nanostructures by means of flux gas composition

Lateral ordering of InGaAs quantum dots on the GaAs (001) surface has been achieved in earlier reports, resembling an anisotropic pattern. In this work, we present a method of breaking the anisotropy of ordered quantum dots (QDs) by changing the growth environment. We show experimentally that using As(2) molecules instead of As(4) as a background flux is efficient in controlling the diffusion of distant Ga adatoms to make it possible to produce isotropic ordering of InGaAs QDs over GaAs (001). The control of the lateral ordering of QDs under As(2) flux has enabled us to improve their optical properties. Our results are consistent with reported experimental and theoretical data for structure and diffusion on the GaAs surface.

Immobilization of Catalysts of Biological Interest on Porous Oxidized Silicon Surfaces

The present paper deals with the immobilization of redox mediators and proteins onto protected porous silicon surfaces to obtain their direct electrochemical reactions and to retain their bioactivities. This paper shows that MP-11 and viologens are able to establish chemical bonds with 3-aminopropyltriethoxylsilane-modified porous silicon surface. The functionalization of the surfaces have been fully characterized by energy dispersive X-ray analysis (EDX) and X-ray photoelectron spectroscopy (XPS) to examine the immobilization of these mediators onto the solid surface. Amperometric and open circuit potential measurements have shown the direct electron transfer between glucose oxidase and the electrode in the presence of the viologen mediator covalently linked to the 3-aminopropyltriethoxylsilane (APTES)-modified porous silicon surfaces.

Self-reported symptoms and motor tests via telemetry in a 36-month levodopa-carbidopa intestinal gel infusion trial

Objective To investigate if a home environment test battery can be used to measure effects of Parkinson’s disease (PD) treatment intervention and disease progression. Background Seventy-seven patients diagnosed with advanced PD were recruited in an open longitudinal 36-month study at 10 clinics in Sweden and Norway; 40 of them were treated with levodopa-carbidopa intestinal gel (LCIG) and 37 patients were candidates for switching from oral PD treatment to LCIG. They utilized a mobile device test battery, consisting of self-assessments of symptoms and objective measures of motor function through a set of fine motor tests (tapping and spiral drawings), in their homes. Both the LCIG-naïve and LCIG-non-naïve patients used the test battery four times per day during week-long test periods. Methods Assessments The LCIG-naïve patients used the test battery at baseline (before LCIG), month 0 (first visit; at least 3 months after intraduodenal LCIG), and thereafter quarterly for the first year and biannually for the second and third years. The LCIG-non-naïve patients used the test battery from the first visit, i.e. month 0. Out of the 77 patients, only 65 utilized the test battery; 35 were LCIG-non-naïve and 30 LCIG-naïve. In 20 of the LCIG-naïve patients, assessments with the test battery were available during oral treatment and at least one test period after having started infusion treatment. Three LCIG-naïve patients did not use the test battery at baseline but had at least one test period of assessments thereafter. Hence, n=23 in the LCIG-naïve group. In total, symptom assessments in the full sample (including both patient groups) were collected during 379 test periods and 10079 test occasions. For 369 of these test periods, clinical assessments including UPDRS and PDQ-39 were performed in afternoons at the start of the test periods. The repeated measurements of the test battery were processed and summarized into scores representing patients’ symptom severities over a test period, using statistical methods. Six conceptual dimensions were defined; four subjectively-reported: ‘walking’, ‘satisfied’, ‘dyskinesia’, and ‘off’ and two objectively-measured: ‘tapping’ and ‘spiral’. In addition, an ‘overall test score’ (OTS) was defined to represent the global health condition of the patient during a test period. Statistical methods Change in the test battery scores over time, that is at baseline and follow-up test periods, was assessed with linear mixed-effects models with patient ID as a random effect and test period as a fixed effect of interest. The within-patient variability of OTS was assessed using intra-class correlation coefficient (ICC), for the two patient groups. Correlations between clinical rating scores and test battery scores were assessed using Spearman’s rank correlations (rho). Results In LCIG-naïve patients, mean OTS compared to baseline was significantly improved from the first test period on LCIG treatment until month 24. However, there were no significant changes in mean OTS scores of LCIG-non-naïve patients, except for worse mean OTS at month 36 (p<0.01, n=16). The mean scores of all subjectively-reported dimensions improved significantly throughout the course of the study, except ‘walking’ at month 36 (p=0.41, n=4). However, there were no significant differences in mean scores of objectively-measured dimensions between baseline and other test periods, except improved ‘tapping’ at month 6 and month 36, and ‘spiral’ at month 3 (p<0.05). The LCIG-naïve patients had a higher within-subject variability in their OTS scores (ICC=0.67) compared to LCIG-non-naïve patients (ICC=0.71). The OTS correlated adequately with total UPDRS (rho=0.59) and total PDQ-39 (rho=0.59). Conclusions In this 3-year follow-up study of advanced PD patients treated with LCIG we found that it is possible to monitor PD progression over time using a home environment test battery. The significant improvements in the mean OTS scores indicate that the test battery is able to measure functional improvement with LCIG sustained over at least 24 months.

Factors associated with evidence-based practice among registered nurses in Sweden : a national cross-sectional study

Background: Evidence-based practice (EBP) is emphasized to increase the quality of care and patient safety. EBP is often described as a process consisting of distinct activities including, formulating questions, searching for information, compiling the appraised information, implementing evidence, and evaluating the resulting practice. To increase registered nurses' (RNs') practice of EBP, variables associated with such activities need to be explored. The aim of the study was to examine individual and organizational factors associated with EBP activities among RNs 2 years post graduation. Methods: A cross-sectional design based on a national sample of RNs was used. Data were collected in 2007 from a cohort of RNs, included in the Swedish Longitudinal Analyses of Nursing Education/Employment study. The sample consisted of 1256 RNs (response rate 76%). Of these 987 RNs worked in healthcare at the time of the data collection. Data was self-reported and collected through annual postal surveys. EBP activities were measured using six single items along with instruments measuring individual and work-related variables. Data were analyzed using logistic regression models. Results: Associated factors were identified for all six EBP activities. Capability beliefs regarding EBP was a significant factor for all six activities (OR = 2.6 - 7.3). Working in the care of older people was associated with a high extent of practicing four activities (OR = 1.7 - 2.2). Supportive leadership and high collective efficacy were associated with practicing three activities (OR = 1.4 - 2.0). Conclusions: To be successful in enhancing EBP among newly graduated RNs, strategies need to incorporate both individually and organizationally directed factors.

Facilitators and barriers to applying a national quality registry for quality improvement in stroke care

BACKGROUND: National quality registries (NQRs) purportedly facilitate quality improvement, while neither the extent nor the mechanisms of such a relationship are fully known. The aim of this case study is to describe the experiences of local stakeholders to determine those elements that facilitate and hinder clinical quality improvement in relation to participation in a well-known and established NQR on stroke in Sweden. METHODS: A strategic sample was drawn of 8 hospitals in 4 county councils, representing a variety of settings and outcomes according to the NQR's criteria. Semi-structured telephone interviews were conducted with 25 managers, physicians in charge of the Riks-Stroke, and registered nurses registering local data at the hospitals. Interviews, including aspects of barriers and facilitators within the NQR and the local context, were analysed with content analysis. RESULTS: An NQR can provide vital aspects for facilitating evidence-based practice, for example, local data drawn from national guidelines which can be used for comparisons over time within the organisation or with other hospitals. Major effort is required to ensure that data entries are accurate and valid, and thus the trustworthiness of local data output competes with resources needed for everyday clinical stroke care and quality improvement initiatives. Local stakeholders with knowledge of and interest in both the medical area (in this case stroke) and quality improvement can apply the NQR data to effectively initiate, carry out, and evaluate quality improvement, if supported by managers and co-workers, a common stroke care process and an operational management system that embraces and engages with the NQR data. CONCLUSION: While quality registries are assumed to support adherence to evidence-based guidelines around the world, this study proposes that a NQR can facilitate improvement of care but neither the registry itself nor the reporting of data initiates quality improvement. Rather, the local and general evidence provided by the NQR must be considered relevant and must be applied in the local context. Further, the quality improvement process needs to be facilitated by stakeholders collaborating within and outside the context, who know how to initiate, perform, and evaluate quality improvement, and who have the resources to do so.

Who is `us`? Students negotiating discourses of racism and national identification in Australia

This article explores the political beliefs and the forms of reasoning about racism, national identity and Other developed by young Australian women and men from different ethnic and class backgrounds. The interviews on which the discussion is based are drawn from a larger longitudinal study of Australian secondary school students which examines how young people develop their sense of self and social values over time. The present article has two overall purposes: to add to understandings of how the cultural logic of racism functions in one national setting, and to consider political reasoning about race and ethnicity in relation to processes of young people's identity positioning. Three main lines of argument are developed. The first concerns students' positioning of themselves vis-a `-vis the current 'race debate' in Australia, and in relation to us as researchers, including their negotiation of the protocols for speaking about 'race' and racism. This includes consider ation of the methodological and political effects of white Anglo women asking questions about racism and ethnicity to ethnic minority students who are routinely constituted as 'Other': what blindnesses and silences continue to operate when posing questions about racism directly? A second and related focus is the range of emotional responses evoked by asking questions about racism and about an Australian politician (Pauline Hanson), who has been prominent in race debates. Third, the authors examine young people's construction of 'us and them' binaries and hierarchies of Otherness and whiteness. They argue throughout that reasoning about race, national identity and Others, and the taking up of 'political positions', is intimately linked to identity formation and to how we imagine ourselves in the present, the past and the future.

What about the men? Gender differences in utilisation of arthritis self-management services

As self-management programs for chronic illness increasingly become the domain of primary health care providers, it is important to consider gender inequities in access to these services and gender differences in patterns of use to inform the development and delivery of services. This study explores gender differences in levels and patterns of access to arthritis elf-management services by analyzing data collected from the Telephone Information Service of Arthritis Victoria, Contingency tables were analyzed and odds-ratios calculated to confirm gender differences in levels and patterns of service utilisation. Men were found to be significantly under-represented as users of the service, even after taking into account gender differences in prevalence of arthritis in the population. Women were more likely than men to contact the service on their own behalf. Men were more likely to have a family member or friend contact the services for them. Women showed more interest in learning about their condition while men focused more on symptom management. These gender differences in rates and patterns of services use indicate that services providers of self-management services for conditions such as arthritis need to take into account the interaction between gender and service utilisation.

Critique as technology of the self

This inquiry is situated at the intersection of two enigmas. The first is the enigma of the status of Kant's practice of critique, which has been the subject of heated debate since shortly after the publication of the first edition of The Critique of Pure Reason. The second enigma is that of Foucault's apparent later 'turn' to Kant, and the label of 'critique', to describe his own theoretical practice. I argue that Kant's practice of 'critique' should be read, after Foucault, as a distinctly modern practice in the care of the self, governed by Kant's famous rubric of the 'primacy of practical reason'. In this way, too, Foucault's later interest in Kant - one which in fact takes up a line present in his work from his complementary thesis on Kant's Anthropology - is cast into distinct relief. Against Habermas and others, I propose that this interest does not represent any 'break' or 'turn' in Foucault's work. In line with Foucault's repeated denials that he was interested after 1976 in a 'return to the ancients', I argue that Foucault's writings on critique represent instead both a deepening theoretical self-consciousness, and part of his project to forge an ethics adequate to the historical present.

Self-regulation: a risky option for developing countries? The case of Bangladesh

In recent years, the command and control type of government regulation is giving way to self- regulatory approaches in which industry sectors are responsible for controlling the conduct of their own members. Although self-regulatory approaches are increasingly being adopted with the objective of both improving the rate of compliance and reducing costs in developed countries, this paper argues that this might be a risky option. Developing countries often do not have adequate levels of standards of efficiency, effective legal regulatory frameworks, institutional safeguards and public awareness. Using the Bangladesh agriculture sector as an exemplar, this paper investigates the prospects of self-regulation of small businesses trading in agricultural inputs as a possible remedy for the recent problems associated with the sale of contaminated inputs to the farmers. The paper argues that self-regulation does not develop and is not sustained  independently of the context in which business operates. Importantly, the context includes the legal infrastructure created by the state and the enforcement effort imposed by the state. In the absence of effective state intervention in the public interest, institutional safeguards and public awareness, private entrepreneurs are less constrained to behave in the public interest and in conformity with the objectives of self-regulation. The findings of this paper provide significant implications for addressing the issue of effective regulation in developing countries.

Philosophy and the care of the self: a literature survey

This article reviews a number of recent books and practices that address a renewed interest in the role that philosophy might play in the living of a rich and fulfilling life. The review looks at books addressed to the general public as well as books which discuss such classical and Hellenistic philosophers as took their task to be helping people achieve happiness in life. It then turns to contemporary studies of the self and of wisdom and turns finally to some newly emerging philosophical practices such as philosophical counselling and philosophical discussion groups of various kinds in order to explore whether philosophy can still be a source of consolation or guidance in contemporary life.

Leadership and learning: facilitating self-directed learning in enterprises

Purpose - To show that a key aspect of learning and development of individual employees is that of self-directedness. This paper will consider the role of the leader in facilitating workforce development in terms of employees' self-directedness for learning. The research was designed to investigate the views that 'learning leaders' in organizations have towards the development of self-directedness in employees; and to identify strategies that are feasible in developing self-directedness in operating organizations.

Design/methodology/approach - Draws on a national research project undertaken in 12 organizations in Australia, representing a range of sizes and a number of industry sectors. Data collection involved interviewing learning and development managers in each organization to gauge the relative feasibility of the implementation of a number of pre-identified strategies designed to develop self-directedness among employees within operating work environments.

Findings - Showed that: learning managers and leaders were generally well disposed towards the development of self-directedness, and some had already moved to do so; and identified a number of possible strategies for implementation of varying degrees of feasibility. The paper will consider these findings in relation to the concept of a 'learning leader'.

Research limitations/implications - Although the research was conducted in a diverse set of 12 enterprises, applicability of the results across an even wider set of enterprises would need to be tested.

Originality/value - The findings of this research provide guidance to learning and development personnel on feasible strategies to use within their own organization to assist with the development of self-directed learning among employees.

Football's world cup and its fans - reflections on national styles : a photo essay on Germany 2006

The football World Cup is the greatest multicultural sporting extravaganza of modern times. The notion of post-fandom tries to capture the ways in which fans now participate in and engage in self-aware and reflexive strategies to obtain their desired outcomes from attendance at or viewing such major events. This illustrated photo-essay on the World Cup looks at the experiences and behaviour of fans in three countries, Scotland, Germany and Australia, during the tournament with a view to extending our understanding of the relationships between fans and others temporarily interested in the World Cup and the promoters of such mega-events. It argues that the participants brought a wide range of expectations to the tournament and engaged in highly flexible and innovative approaches to ensure that they gained the maximum benefit, individually and collectively, from the experience.

ACCCN national nursing workforce survey of intensive care units

A descriptive study was designed and implemented by the Australian College of Critical Care Nurses (ACCCN) Workforce Planning Advisory Committee to capture data pertaining to workforce issues of intensive care nurses. All intensive care units (ICUs) within Australia were mailed a self reporting survey. Despite a low response rate (52 per cent) and difficulty reported by respondents in gaining the appropriate data requested, the results revealed an interesting snapshot of the intensive care nursing workforce.
Types of services offered by units varied considerably; paid overtime hours were low (<2 per cent of total hours worked) and use of both part-time and agency staff was also low (10 per cent of total hours worked). Private hospitals utilised a greater proportion of part-time and agency nursing staff than public hospitals (20:10 per cent). The turnover rate for registered nursing staff was estimated at 18 per cent, with education, skill acquisition and improved communication reported as the major incentives used by managers to attract and retain staff. This study demonstrated that valuable data are currently uncaptured and recommends a more refined process of a national database to record and manage this important information for future workforce planning.

Dietary patterns of Australian adults and their association with socio-economic status: results from the 1995 national nutrition survey

Objective: To describe dietary patterns among men and women in the Australian population, and to explore how these varied according to socioeconomic status (SES).

Design: A cross-sectional self-report population survey, the 1995 Australian National Nutrition Survey (NNS), was used.

Setting: Private dwelling sample, covering urban and rural areas across Australia.

Subjects: Data provided by 6680 adults aged 18-64 who participated in the NNS were used in the analyses.

Methods: Factor analyses were used to analyse data from a Food Frequency Questionnaire (FFQ) completed by participants. Associations between SES and dietary pattens were assessed using ANOVA.

Results: Separate factor analyses of the FFQ data for men and women revealed 15 factors, accounting for approximately 50% of the variance in both men's and women's dietary patterns. Several gender and SES differences in food patterns were observed. Lower SES males more frequently consumed 'tropical fruits', 'protein foods', and 'offal and canned fish', while high SES males more often ate 'breakfast cereals' and 'wholemeal bread'. Lower SES females more often ate 'traditional vegetables', 'meat dishes' and 'pasta, rice and other mixed foods', while high SES females more frequently ate 'ethnic vegetables' and 'breakfast cereal/muesli'.

Conclusions: These findings contribute to a better understanding of the dietary patterns that underscore gender-specific SES differences in nutrient intakes. Analyses of the type employed in this study will facilitate the development of interventions aimed at modifying overall eating patterns, rather than specific components of the diet.