Sufficient Reduction in Multivariate Surveillance

The relation between change points in multivariate surveillance is important but seldom considered. The sufficiency principle is here used to clarify the structure of some problems, to find efficient methods, and to determine appropriate evaluation metrics. We study processes where the changes occur simultaneously or with known time lags. The surveillance of spatial data is one example where known time lags can be of interest. A general version of a theorem for the sufficient reduction of processes that change with known time lags is given. A simulation study illustrates the benefits or the methods based on the sufficient statistics.     

The origin of semilingualism: Nils-Erik Hansegård and the cult of the mother tongue

‘Semilingualism’ is one of the most questionable theories produced in the language sciences. Yet, little is known about its origins. We present a critical account of the history of semilingualism, tracing its roots in the work of Nils Erik Hansegård, (1918–2002), inaugural chair of Sámi at Umeå University (1975–1979), who developed a theory of semilingualism (halvspråkighet) in the 1960s. We show how Hansegård theorized semilingualism using ideas from Nazi German linguistics, producing an unforgiving theory of linguistic pathology directed at minoritized bilinguals in Sweden's far north.     

Multivariate outbreak detection

Online monitoring is needed to detect outbreaks of diseases such as influenza. Surveillance is also needed for other kinds of outbreaks, in the sense of an increasing expected value after a constant period. Information on spatial location or other variables might be available and may be utilized. We adapted a robust method for outbreak detection to a multivariate case. The relation between the times of the onsets of the outbreaks at different locations (or some other variable) was used to determine the sufficient statistic for surveillance. The derived maximum-likelihood estimator of the outbreak regression was semi-parametric in the sense that the baseline and the slope were non-parametric while the distribution belonged to the one-parameter exponential family. The estimator was used in a generalized-likelihood ratio surveillance method. The method was evaluated with respect to robustness and efficiency in a simulation study and applied to spatial data for detection of influenza outbreaks in Sweden.     

The protection of unrepresented patients in emergency care research

In emergency care research, it may be the case that neither informed consent nor surrogate consent is possible. In order to nonetheless allow for such research, codes and regulations of research ethics have increasingly incorporated provisions regarding this specific situation. The protection that those provisions offer need to be better understood. This article addresses in what ways they protect individuals, and especially the extent to which the suggested protection compensates for the loss of surrogate consent. The Declaration of Helsinki, the Additional Protocol to the Convention on Human Rights and Biomedicine, and the EU Clinical Trials Regulation serve as the main illustrations.     

Does municipal ownership affect audit fees?

This study analyses whether municipal ownership affects and determines audit fees. Our model of the determinants of audit fees was tested on data from 249 Swedish municipal and 240 private corporations within the real estate industry, thus extending the study of audit fees to hybrid organizations. The statistical analysis was followed up with interviews of five partners from five different audit firms. The result of the study shows that municipal corporations are paying significantly lower audit fees than equivalent private corporations. This finding is primarily explained by lower perceived business risk and by the fact that municipalities are able to push prices by coordinating procurements of audit services.

     

The linguistic sense of placement: Habitus and the entextualization of translingual practices in Swedish academia

This paper adopts a Bourdieusian approach to discourse in contemporary Swedish academia. Habitus, entextualization, and translingual practice are employed as epistemological perspectives for investigating the place of Swedish in the text trajectories of two disciplines where English prevails in publishing. Data from meeting recordings, email correspondence, and interviews show that Swedish is the legitimate language throughout in the text production and that discipline‐specific Swedish is practiced so long as it encompasses all participants’ repertoires. In fact, the researchers point to an almost physical awkwardness linked to the unwarranted use of English among themselves. Following Bourdieu, it is argued that these sensibilities pertain to the linguistic sense of placement of socialized agents and that the unease of being out of place prevents them from lapsing into what is socially perceived as unacceptable discourse in their translingual practices.     

Evaluation of multivariate surveillance

Multivariate surveillance is of interest in many areas such as industrial production, bioterrorism detection, spatial surveillance, and financial transaction strategies. Some of the suggested approaches to multivariate surveillance have been multivariate counterparts to the univariate Shewhart, EWMA, and CUSUM methods. Our emphasis is on the special challenges of evaluating multivariate surveillance methods. Some new measures are suggested and the properties of several measures are demonstrated by applications to various situations. It is demonstrated that zero-state and steady-state ARL, which are widely used in univariate surveillance, should be used with care in multivariate surveillance.