126 resultados para Autoregressive moving average (ARMA)


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Aim: This case study describes a quality initiative to minimize restraint in an Australian residential aged care facility.

Approach: The process of improving practice is examined with reference to the literature on implementation of research into practice and change management. The differences between planned and emergent approaches to change management are discussed. The concepts of resistance and attractors are explored in relation to our experiences of managing the change process in this initiative. The importance of the interpersonal interactions that were involved in facilitating the change process is highlighted.

Implications:
Recommendations are offered for dealing with change management processes in clinical environments, particularly the need to move beyond an individual mind-set to a systems-based approach for quality initiatives in residential aged care.

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In this article we examine several hypotheses relating to output and inflation dynamics in China. The hypotheses tests are based on the exponential  generalised autoregressive conditional heteroskedasticity (EGARCH) model of Nelson [Nelson, D. (1991). Conditional heteroskedasticity in asset return: A new approach, Econometrica, 59, 347–370]. Our findings suggest that Chinese output–inflation behaviour is consistent with the hypothesis that increased inflation uncertainty lowers average inflation; the hypothesis that inflation volatility reduces economic growth and the hypothesis that higher output volatility increases economic growth. However, we find no support for the hypothesis that higher output volatility increases the average inflation rate.

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Female disadvantage has been the explanation given in previous studies to explain the under-representation of laywomen who achieve principalships in Catholic Education. Women, themselves, have overcome many of the barriers that disadvantage them. These include an apparent inability to cope with financial management and time constraints due to family commitments. The introduction of Equal Opportunity legislation and related programmes has assisted this process, but as my research shows the under-representation of women in principalship in proportion to the numbers of women teachers in Catholic Education still remains. This thesis examines the phenomenon in three dioceses in three Australian states. I have investigated this problem using a feminist research approach which is characterised by an emphasis on the significance of everyday life. Statistical material as to percentages of teachers in comparison with percentages of female principals was collected; dates of formulation and acceptance of relevant policies at diocesan levels were checked and questionnaires compiled. The questionnaires were distributed to appropriate stakeholders. Following the compilation of data from the questionnaires, themes emerged which provided the initial questions for focus groups made up of male and female principals and potential principals. These focus groups were then conducted in all three dioceses. Through all stages I carried out cross-referencing with my own journal sentries (Power, 1993—1999) . The qualitative and quantitative data generated from the focus groups was examined and analysed drawing on feminist concepts. I have found two major features emerging from the materials that I have generated. The first was the unpredictable, ambiguous and often contradictory relations that occur within Catholic Education, and how they were experienced by lay women. This aspect gave rise to the title of my thesis: 'Dancing on a Moving Floor' as many women felt the rules changed the closer they got to achieving principalship. Then both male and female participants highlighted 'male advantage' in terms that have been identified in other education systems, but this factor emerged as being further heightened in Catholic Education and occurring at systemic, organisational and individual levels. I have made a number of policy recommendations that could possibly change attitudes and practices for each of these levels. I conclude with some suggestions for further research.

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The study reported in this thesis is a single-shot case study, which aims to provide a detailed description ofthe reading comprehension strategies used by fifteen student teachers ofEnglish from Indonesian- and Javanese-speaking backgrounds in the last year of their four-year Strata-One study at a university In Yogyakarta, Indonesia. These readers were above average among their peers in that their average indexes of grades in Reading and Speaking classes were 3.22 and 3,34 respectively, while the average indexes ofthe peer group were 271 and 2.63, respectively, out ofa scale of 0 to 400. In addition, while students in this university may complete their study by course work or by research, these readers were all enrolled as research students. As studying comprehension strategies involves complex issues, a multi-method approach is required, not only for breadth of coverage, but also to allow for a check on the validity of individual methods. To achieve the goal of the study, thinka1oud tasks, retellings, a reading comprehensIon test, indepth interviews and observations were employed to explore the strategies used. An analysis of the recorded data indicates that these readers used thirty strategies classified under five clusters: infomiation gathering, information processing, text interpretation, comprehension monitoring, and comprehension utilisation. In general, readers started gathering information by silent reading, interpreted the text by an inference or a paraphrase, and ended the task by making selfreflections relevant to the text. Most readers managed to identify problems when they occurred, and monitored their comprehension when they doubted their interpretation, as could be seen from their rereading the text or vocalising its pail(s). When direct interpretation was difficult, readers associated the text with prior knowledge or interrelated parts of the text, The readers in this study share characteristics of both poor and good native readers, in the sense that there was evidence ofgood strategy use butthe readers did not manage to maintain it consistently. As a result, even the successful readers were not able to maximise their potential. The implication is that in order to develop students into independent readers, strategy instruction should be part of and appropriately embedded in, the reading instruction. There is a need not merely to teach strategies as such, but rather to teach flexibility in strategy use. While there was sufficient evidence that thinkaloud tasks and their complementary methods worked to achieve the goals ofthe present study, similar studies with different cohorts are suggested for crosschecks.

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A range of factors, both internal and external, is creating changes in teaching and teachers’ professional lives. Information and Communication Technology (ICT) is just one of the major changes impacting on the teaching profession. As teachers face intense pressure to adapt to this tsunami, this study aims to investigate ways in which teachers can be helped. In South Australia, where this study is set, all teachers in Government schools are expected to be "ICT Smart", i.e. able to use appropriate forms of ICT to enhance the teaching and learning environment of their classrooms. From the researcher’s involvement for over a decade in professional development for teachers, and from visits to many schools, it appears that numerous teachers have not reached this standard. The greatest need is in Reception to Year 7 schools where the average age of teachers is nearly 50. Because no state-wide data exists, this study is intended to establish if there is a problem and if there is, to identify specific needs and offer possible solutions. The study is comprised of four parts: Part A, the Introduction gives an overview of the inter-relationships between these parts and the overall Folio. It establishes the setting and provides a rationale for the study and its focus on Professional Development in Information and Communication Technology. Part B, the Elective Research Studies, follows the writer’s involvement in this field since the 1980s. It establishes the theme of "Moving best practice in ICT from the few to the many" which underlies the whole study. Part C, the Dissertation, traces the steps taken to investigate the need for professional development in ICT. This is achieved by analysing and commenting on data collected from a state-wide survey and a series of interviews with leading figures, and by providing a review of the relevant literature and past and existing models of professional development. Part D, Final Comments, provides an overview of the whole Folio and a reflection on the research that has been conducted. The findings are that there is widespread dissatisfaction with existing models and that there is an urgent need for professional development in this area, because nearly 20% of teachers either do not use computers or are considered to be novice users. Another 25% are considered to be below not yet "ICT Smart". Less than 10% of ICT co-ordinators have a formal qualification in the field but more than 85% of them are interested in a Masters program. The study offers solutions in Part B where there is a discussion of a range of strategies to provide on-going professional development for teachers. Chapter 9 provides an outline of a proposed Masters level program and offers suggestions on how it could be best delivered. This program would meet the identified needs of ICT co-ordinators. The study concludes with a series of recommendations and suggestions for further research. The Education Department must address these urgent professional development needs of teachers, particularly those in the more remote country regions. There needs to be a follow-up survey to establish to what extent teachers in South Australia are now "ICT Smart ".

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Explores space and object relations in a digital 3-D animation production, "Moving-Image". The exegesis examines these relations through an analysis of pictorial realism in painting. The illusion of three dimensional forms in the space of the computer screen is contextualised by investigation of the work's underlying digital conditions.

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The 3rd generation partnership project (3GPP) long term evolution (LTE) standard uses single carrier frequency division multiple access (SCFDMA) scheme for the uplink transmissions and orthogonal frequency division multiplexing access (OFDMA) in downlink. SCFDMA uses DFT spreading prior to OFDMA modulation to map the signal from each user to a subset of the available subcarriers i.e., single carrier modulation. The efficiency of a power amplifier is determined by the peak to average power ratio (PAPR) of the modulated signal. In this paper, we analyze the PAPR in 3GPP LTE systems using root raised cosine based filter. Simulation results show that the SCFDMA subcarrier mapping has a significantly lower PAPR compared to OFDMA. Also comparing the three forms of SCFDMA subcarrier mapping, results show that interleave FDMA (IFDMA) subcarrier mapping with proposed root raised cosine filter reduced PAPR significantly than localized FDMA (LFDMA) and distributed (DFDMA) mapping. This improves its radio frequency (RF) power amplifier efficiency and also the mean power output from a battery driven mobile terminal.

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In 2003, Deakin University implemented a centralised learning management system (LMS) under the banner of Deakin Studies Online (DSO), as well as implementing policies requiring all its units of study to have at least a basic online presence from 2004. Given the scope of the university's commitment to online education, it was considered essential to evaluate the effectiveness of this investment. Based on more than 5400 responses obtained from students in 2004 and 2005 as part of the DSO evaluation survey, the analysis presented here identifies those elements of the online learning environment (OLE) that are most used and valued by students, those elements of the OLE that students most want to see improved, and, those factors that most contribute to students' perceptions that use of the OLE enhanced their learning experience. The most used and valued elements were core LMS functions, including accessing unit information, accessing lecture/tute/lab notes, interacting with unit learning resources, reading online discussions, contacting lecturers/tutors and submitting assignments online. The OLE elements identified as most needing attention were receiving feedback on assignments; viewing my marks; and reviewing unit progress. Students felt that using DSO enhanced their learning experience when they were adequately supported by unit teachers and technical support services; when they were able to find and use unit information; and when they were able to read the online contributions of other unit members. The retrospective analysis of data collected in the period 2004-2005 has been shaped by a forward-looking agenda. The array of elements available within, and in association with, traditional LMSs which has emerged since that time raises the future challenge of how to maximise and evidence educational value through the optimal combination of elements from the portfolio of e-learning technologies increasingly available to educators.