Gaussian process (GP) models are widely used in disease mapping as they provide a natural framework for modeling spatial correlations. Their challenges, however, lie in computational burden and memory requirements. In disease mapping models, the other difficulty is inference, which is analytically intractable due to the non-Gaussian observation model. In this paper, we address both these challenges. We show how to efficiently build fully and partially independent conditional (FIC/PIC) sparse approximations for the GP in two-dimensional surface, and how to conduct approximate inference using expectation propagation (EP) algorithm and Laplace approximation (LA). We also propose to combine FIC with a compactly supported covariance function to construct a computationally efficient additive model that can model long and short length-scale spatial correlations simultaneously. The benefit of these approximations is computational. The sparse GPs speed up the computations and reduce the memory requirements. The posterior inference via EP and Laplace approximation is much faster and is practically as accurate as via Markov chain Monte Carlo.

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Purpose This study aims to take a discursive view on positive leadership (PL). A positive approach has gained momentum in recent years as appropriate leadership practices are implemented in organizations. Despite the turn toward discursive approaches in organization studies, there is insufficient evidence supporting PL as a socially constructed experience. Design/methodology/approach The present study addresses an integrative discourse perspective for capturing the PL concept as a social process within the public health-care context. Findings Four meanings of PL are highlighted: role-taking, servicing, balancing and deciphering. Research limitations/implications The meanings shift the emphasis of certain PL definitions to a contextual interpretation. For scholars, the perspective demonstrates a multidimensional process approach in the desired organizational context as a counterbalance to one unanimously agreed-upon PL definition. Practical implications For leaders, an integrative discourse perspective offers tools for comprehending PL as a process: how to identify, negotiate and reconcile various PL meanings. Originality/value An integrative discourse perspective provides a novel perspective capturing the PL concept within the public health-care field.

This study investigates project participants’ sensemaking of lived work experiences during periods of organizational change within Finnish public healthcare. It introduces a discursive sensemaking perspective to investigate lived experiences, that is, reflexive practitioners’ situational thinking. Drawing upon 17 interviews, the study identifies diverse repertoires through which the lived experiences are considered meaningful. These are repertoires of: (1) transformation, (2) realism, (3) politics, (4) individuality, (5) reflexivity, and (6) senselessness. The results show that project-based work in public healthcare differs from project participants’ expectations because projects are perceived to increase rather than decrease bureaucracy and include unsustainable working conditions that have to be endured.

A phenomenological psychology approach in organizational studies has been somewhat overlooked, particularly in research on leadership and employee well-being. This study presents a new way of examining leadership and employee well-being. A novel experience qualities approach was utilized with the aim of revealing the authentic structure of human experiences, particularly experience qualities such as emotions, knowledge, and assumptions. This study investigated the role of leadership in creating employee well-being experiences in a professional organization. The data were collected from 23 in-depth interviews conducted with company leaders and employees in Finland and then analyzed using the phenomenological method. The results indicated affirmative similarities and differences (experience domains) in experience qualities of well-being between leaders and employees. By identifying different experience qualities of well-being, leaders can promote their own and employees’ well-being more precisely and effectively. Practical implications for leaders are discussed.