The reliability of clinical indicators of oxygenation: a literature review

Despite oxygen being one of the most frequently administered substances in the hospital environment, there is little empirical data regarding its use. Review of the literature regarding the clinical assessment of hypoxia and hypoxaemia reveals inconsistency in the definition of terms and raises questions as to the reliability of the clinical indicators currently used to assess the need for supplemental oxygen. Assessment of the need for supplemental oxygen and continued re-evaluation of the patient's oxygen requirements is a nursing responsibility. Physical assessment, in combination with pulse oximetry, is the most common method used by nurses to assess oxygenation status. This paper critically appraises the literature to examine the reliability of clinical indicators of oxygenation used by nurses in acute care settings.

Identification of general and double aggregation operators using monotone smoothing

Aggregation operators model various operations on fuzzy sets, such as conjunction, disjunction and averaging. Recently double aggregation operators have been introduced; they model multistep aggregation process. The choice of aggregation operators depends on the particular problem, and can be done by fitting the operator to empirical data. We examine fitting general aggregation operators by using a new method of monotone Lipschitz smoothing. We study various boundary conditions and constraints which determine specific types of aggregation.

Receiver influences on knowledge sharing

Sharer consideration of receiver knowledge needs and behaviours may improve the quality and results of knowledge sharing. This paper examines how sharers may be influenced by perceived receiver knowledge needs and behaviours when making knowledge sharing choices. Such a consideration adopts an emancipatory approach aimed at acknowledging the rights of those employees who need knowledge to receive it, despite the conflicting goals, agendas or efficiency pressures of sharers. Based on a literature review, a receiver-based theory of knowledge sharing is proposed. Empirical data from two case studies highlight the key role played by perceived receiver knowledge needs and behaviours as motivators and inhibitors in sharer choices. A set of key receiver influences on knowledge sharing is provided. This study concludes that companies should develop better ways to connect potential sharers with the real knowledge needs of receivers, particularly when knowledge technologies mediate sharing. Further, the findings suggest that sharing on a need-to-know basis impedes change in organisational power structures and prevents the integration of isolated pockets of knowledge that may yield new value.

Toward successful knowledge transfer in web-based self-service for information technology services

Web-based self-service has emerged as an important strategy for providing pre- and post-sales customer support. Yet, there is a dearth of theoretical or empirical research concerning the organisational, customer-oriented, knowledge-based, and employee-oriented factors that enable web-based self-service systems (WSS) to be successful in a competitive global marketplace. In this paper, we describe and discuss findings from the first phase of a multi-method research study designed to address this literature gap. This study explores critical success factors (CSFs) involved in the transfer of support-oriented knowledge from an information technology (IT) services firm to commercial customers when WSS are employed. Empirical data collected in a CSF study of a large multinational IT services business are used to identify twenty-six critical success factors. The findings indicate that best-in-class IT service providers are aware of a range of critical success factors in the transfer to commercial customers of resolutions and other support-oriented knowledge via WSS. However, such firms remain less certain about what is needed to support customer companies after support-oriented knowledge has initially been transferred to the customer firm.

Families needs in emergency departments: instument development

Background. Families who accompany critically ill relatives in emergency departments (EDs) are an integral part of the care unit. However, there are few empirical data on their needs during this phase of care. In order to guide quality care, general and specific needs of families accompanying these critically ill relatives should be systematically examined.

Aim. The aim of this pilot project was to test the tool, methods and analysis plan for a study to examine the perceived needs of family members accompanying critically ill patients in EDs and their perceptions of ED staff's ability to meet these needs.

Method. Over a 6-week period in 1996, 84 relatives who met the inclusion criteria were recruited to the study. A postal questionnaire, to uncover the needs of family members, was pilot tested. The questionnaire consisted of 40 need statements reflecting five major themes: meaning, proximity, communication, comfort and support. Of the 84 relatives selected for the study, 73% returned completed questionnaires.

Results. The findings of this pilot study suggest that the questionnaire is a valid and reliable tool for researchers wishing to examine and rank the needs of family members who accompany critically ill people in EDs. In addition, the analysis plan was found to be appropriate.

Conclusions. This pilot study provides both a method and a tool for further research into family needs. Examination of the pilot data supported the reliability and validity of the tool and produced findings that challenge nurses to move beyond traditional practice that has excluded families from being an integral part of caring for critically ill patients in EDs.

Bounded and unbounded knowledge : teaching and learning in a web 2 world

beginning of serious problems for the business models of publishers. The ease with which content can be accessed, copied and distributed disrupts the control of those whose role has been to manage and profit from the intellectual property rights of content producers. In effect, the number of “publishers” increased many fold as the Web and other Internet-based technologies became the dominant mode of content distribution. In education, and in other fields, matters of intellectual property, copyright and quality control came to the fore. More recently, with the advent of web based software that makes publishing online available to anyone with access to the Internet the number of “publishers” and modes of publication have increased massively. The shift from a Web which was, for many a read only environment to a read/write Web poses not only ongoing problems for the traditional distributors of content but also now, for the traditional producers of content and knowledge. In this respect, the role of universities as designers and producers of learning materials for credentialed learning is also under challenge. Just as publishers explore alternative business models to adapt to the new digital environment, now universities have begun to explore new ways of working with so-called Web2 software to support teaching and learning online. In particular, some Web2 software affords new opportunities for and different modes of collaboration, which in the view of some points to student participation in knowledge production. While these developments represent important and significant shifts for universities, this paper draws attention to the lack of empirical data and situated contextual knowledge concerning intellectual property rights for knowledge constructed in a collaborative context. In addition, we explore issues in relation to the maintenance of academic integrity and quality where knowledge building takes place in a collaborative, online environment.

Making sense of difference? Teaching identities in postmodern contexts

How do teachers make sense of ethnic and classed differences? Frequently students from non-mainstream cultures and of lower socio-economic status are constructed in the literature and through practice as ‘deficit’ and consequently become marginalised. A range of short-term, ‘quick fix’ policy and curriculum approaches have aimed to address the ‘problems’ of those ‘othered’ from the mainstream due to their perceived difference. These have had little effect on improving educational results for students of specific ethnic and/or class backgrounds whose outcomes remain below the national average.

Poststructural theories offer opportunities to think about how teachers are positioned within discourses of identity. Our research (and others’) suggests the need for teachers to interrogate their assumptions about class and culture and how these are played out in their pedagogical relationships with students.

In this paper we report on a small research project that investigates the professional practices and personal beliefs of teachers. Empirical data from this study will build knowledge about how difference is constructed and diversity is ‘taken up’ by teachers as they engage with secondary students who have Language Backgrounds Other Than English and who are economically disadvantaged.

Identification of weights in aggregation operators

This chapter provides a review of various techniques for identification of weights in generalized mean and ordered weighted averaging aggregation operators, as well as identification of fuzzy measures in Choquet integral based operators. Our main focus is on using empirical data to compute the weights. We present a number of practical algorithms to identify the best aggregation operator that fits the data.

Reconstructing child welfare through participatory and child-centred professional practice : a conceptual approach

The 'child' in child welfare/protection is seen as a dependent waif and an object of interest, on whose behalf adults speak and act. An alternative perspective has argued for child-centredness, and includes concepts of child liberation, rights and citizenship. Policymakers and practitioners who may accept the underlying principles may be concerned about the appropriateness and applicability of such principles in relation to practice with children and their parents in child welfare/protection cases. This paper discusses a conceptual framework for research that aims to explore participatory and child-centred professional practice by critically evaluating and developing, for professional practice, the practical meanings of 'participatory' and 'children as citizens'. We do not present research outcomes based on empirical data; instead, we present our conceptual framework as the first stage of research in progress into participatory and child-centred professional practice.

The origin of kinship in Oceania : Lewis Henry Morgan and Lorimer Fison

This article investigates the importance of Oceania in the early study of kinship. It examines the tensions between evidence and analysis from the Pacific Islands in the development of Lewis Henry Morgan's theory of evolving kinship forms. While other sources from the Pacific islands are investigated it is focused particularly on the correspondence between Morgan and Lorimer Fison, Methodist missionary and key figure in the spread of kinship schedules and anthropological theories throughout Oceania in the I 870s. The empirical data gathered by Fison, challenged Morgan's schema and questioned the orthodox evolutionist hierarchy in Asia and the Pacific. Also investigated is the British response to this unruly
evidence.

The effects of the social structure of digital networks on viral marketing performance

Viral marketing is a form of peer-to-peer communication in which individuals are encouraged to pass on promotional messages within their social networks. Conventional wisdom holds that the viral marketing process is both random and unmanageable. In this paper, we deconstruct the process and investigate the formation of the activated digital network as distinct from the underlying social network. We then consider the impact of the social structure of digital networks (random, scale free, and small world) and of the transmission behavior of individuals on campaign performance. Specifically, we identify alternative social network models to understand the mediating effects of the social structures of these models on viral marketing campaigns. Next, we analyse an actual viral marketing campaign and use the empirical data to develop and validate a computer simulation model for viral marketing. Finally, we conduct a number of simulation experiments to predict the spread of a viral message within different types of social network structures under different assumptions and scenarios. Our findings confirm that the social structure of digital networks play a critical role in the spread of a viral message. Managers seeking to optimize campaign performance should give consideration to these findings before designing and implementing viral marketing campaigns. We also demonstrate how a simulation model is used to quantify the impact of campaign management inputs and how these learnings can support managerial decision making.

Multifractality and long-range dependence of asset returns: the scaling behavior of the Markov-switching multifractal model with lognormal volatility components

In this paper, we consider daily financial data from various sources (stock market indices, foreign exchange rates and bonds) and analyze their multiscaling properties by estimating the parameters of a Markov-switching multifractal (MSM) model with Lognormal volatility components. In order to see how well estimated models capture the temporal dependency of the empirical data, we estimate and compare (generalized) Hurst exponents for both empirical data and simulated MSM models. In general, the Lognormal MSM models generate "apparent" long memory in good agreement with empirical scaling provided that one uses sufficiently many volatility components. In comparison with a Binomial MSM specification [11], results are almost identical. This suggests that a parsimonious discrete specification is flexible enough and the gain from adopting the continuous Lognormal distribution is very limited.

Fitting fuzzy measures by linear programming. Programming library fmtools

We discuss the problem of learning fuzzy measures from empirical data. Values of the discrete Choquet integral are fitted to the data in the least absolute deviation sense. This problem is solved by linear programming techniques. We consider the cases when the data are given on the numerical and interval scales. An open source programming library which facilitates calculations involving fuzzy measures and their learning from data is presented.

True and apparent scaling : the proximity of the Markov-switching multifractal model to long-range dependence

In this paper, we consider daily financial data of a collection of different stock market indices, exchange rates, and interest rates, and we analyze their multi-scaling properties by estimating a simple specification of the Markov-switching multifractal (MSM) model. In order to see how well the estimated model captures the temporal dependence of the data, we estimate and compare the scaling exponents H(q) (for q=1,2) for both empirical data and simulated data of the MSM model. In most cases the multifractal model appears to generate ‘apparent’ long memory in agreement with the empirical scaling laws.

Effective anger intervention for indigenous prisoners : research and development in a South Australian study

Although the need for the development and provision of culturally appropriate rehabilitation programs for offenders is widely acknowledged, there is a lack of empirical data that can be used as the basis for the development of new programs. This paper reports the findings of two studies - first a qualitiative study exploring the meaning of anger for Indigenous men in prison; and second a comparison of Indigenous and non-Indigenous male prisoners on a range of measures relevant to the experience of anger by indigenous prisoners in Australia. The results suggest that Indigenous participants are more likely to experience symptoms of early trauma, have greater difficulties identifying and describing feelings and perceive higher levels of discrimination than non-Indigenous prisoners. The implications of this work for the development of culturally appropriate and effective anger management programs for indigenous male prisoners and those from other imnoirty cultural groups are discussed.