Relative entropy minimizing noisy non-linear neural network to approximate stochastic processes

A method is provided for designing and training noise-driven recurrent neural networks as models of stochastic processes. The method unifies and generalizes two known separate modeling approaches, Echo State Networks (ESN) and Linear Inverse Modeling (LIM), under the common principle of relative entropy minimization. The power of the new method is demonstrated on a stochastic approximation of the El Niño phenomenon studied in climate research.     

Association between cognitive impairments and anxiety disorders following traumatic brain injury

This study examined the association between cognitive impairment and anxiety disorders following traumatic brain injury (TBI). Sixty-six participants recruited from a rehabilitation hospital completed the Structured Clinical Interview for the DSM–IV (Diagnostic and Statistical Manual of Mental Disorders–Fourth Edition) and cognitive tests at one year post injury. Prevalence of anxiety disorder was 27.3%. Logistic regression analyses revealed that the attention/working memory, information processing, and executive functions models were significantly associated with anxiety disorder. The memory model was not significant. Processing speed emerged as the strongest model associated with anxiety disorder. The role of cognitive impairment in the etiology of anxiety disorders after TBI is discussed, and treatment implications are explored.     

Bone metabolism induced by denture insertion in positron emission tomography

18F‐fluoride positron emission tomogra‐phy (PET) can identify subtle functional variation prior to the major structural change detectable by X‐ray. This study aims to investigate the mechanobiological bone reaction around the abutment tooth and in the residual ridge, induced by insertion of removable partial denture (RPD) within two different groups of patients: patients without denture experience (Group 1) and patients with denture experience before (Group 2), using 18F‐fluoride PET imaging technique. 18F‐fluoride PET/computerised tomography (CT) scan was performed to examine the bone metabolic change in mandible before and after the RPD treatment. Region of interests (ROIs) were placed in alveolar bone around abutment tooth and in residual bone beneath the RPD. Standardised uptake value (SUV), reflecting the accumulation of 18F‐fluoride, was measured for each ROI. In all subjects of Group 1, SUVs after insertion were higher than before in both alveolar bone and residual bone, while there was less significant change in SUV in subjects of Group 2. This study demonstrated using longitudinal 18F‐fluoride PET scans to effectively examine the bone metabolic change in mandible induced by occlusal loading after RPD insertion. Using this technique, within the six subjects in this study, it was shown that bone metabolism around abutment tooth and residual ridge increased after RPD insertion in case of first‐time denture user, while there was no big change in the patient with experience of denture before. This study revealed the effectiveness of applying PET to evaluate bone metabolic activity as mechanobiolo‐gical reaction.     

Vocational identity and psychological adjustment: A study in French adolescents and emerging adults

The aim of the present research was to study vocational identity in French adolescent and emerging adult students by using a French adaptation of the Vocational Identity Status Assessment (VISA), and to analyze the links between vocational identity formation and negative and positive psychological adjustment. Participants were 1077 French students who completed self-report scales about vocational identity, depression and satisfaction with life. The French version of the VISA showed good psychometric properties and six identity statuses were derived by means of cluster analysis: achievement, foreclosure, moratorium, searching moratorium, diffused diffusion and carefree diffusion. The main findings show that diffused diffusion and moratorium represent the dark sides of identity because of their negative psychological adjustment, and that the two processes of reconsideration of commitment were differently associated with psychological adjustment. These findings demonstrate that clinical interventions should be adapted to the individual's identity profile.     

Making choices about medical interventions: the experience of disabled young people with degenerative conditions

Background Current western policy, including the UK, advocates choice for service users and their families, taking greater control and being more involved in decision making. However, children’s role in health decision making, especially from their own perspective, has received less research attention compared to doctors and parents’ perspectives. Objective To explore the perspective and experiences of disabled young people with degenerative conditions as they face significant medical interventions and engage in decision‐making processes. Design and methods Findings from a longitudinal qualitative study of 10 young people (13–22 years) with degenerative conditions are reported. Individual semi‐structured interviews were conducted with participants over 3 years (2007–2010); the paper reports data from all three interview rounds. Interviews focused on medical intervention choices the young people identified as significant. Results Although the young people in this study felt involved in the medical intervention choices discussed, findings demonstrate a complex and diverse picture of decision making. Results highlighted different decisional roles adopted by the young people, the importance of information heuristics and working with other people whilst engaging in complex processes weighing up different decisional factors. Discussion Young people’s experiences demonstrate the importance of moving beyond viewing health choices as technical or rational decisions. How each young person framed their decision was important. Recognizing this diversity and the importance of emerging themes, such as living a normal life, independence, fear of decisions viewed as ‘irreversible’ and the role of parents and peers in decision making highlights that, there are clear practice implications including, active practitioner listening, sensitivity and continued holistic family working.     

Religious Faith and Transformational Processes in Marriage

Leading scholars of marital processes strongly recommend supplementing the current focus on marital conflict to include research on transformative processes. This qualitative study examines the connection between religion and the transformative processes of commitment and coping in marriage. The sample for this study includes 184 married couples (N = 368 individuals), making it far larger than most in‐depth, qualitative interview‐based studies. Participants included Christians, Jews, and Muslims with an over sampling of minorities and immigrant families living in all eight regions of the United States. For several decades studies have shown a largely positive correlation between (a) religiosity and marital commitment and (b) religiosity and (generally) positive coping, but with little explanation regarding how and why. Findings of this study indicate that there are specific religious beliefs and practices related to how these couples approach their marriages—including several that relate to the two transformative processes of commitment and coping.     

Numerical Architecture

The idea that there is a “Number Sense” (Dehaene, 1997) or “Core Knowledge” of number ensconced in a modular processing system (Carey, 2009) has gained popularity as the study of numerical cognition has matured. However, these claims are generally made with little, if any, detailed examination of which modular properties are instantiated in numerical processing. In this article, I aim to rectify this situation by detailing the modular properties on display in numerical cognitive processing. In the process, I review literature from across the cognitive sciences and describe how the evidence reported in these works supports the hypothesis that numerical cognitive processing is modular. I outline the properties that would suffice for deeming a certain processing system a modular processing system. Subsequently, I use behavioral, neuropsychological, philosophical, and anthropological evidence to show that the number module is domain specific, informationally encapsulated, neurally localizable, subject to specific pathological breakdowns, mandatory, fast, and inaccessible at the person level; in other words, I use the evidence to demonstrate that some of our numerical capacity is housed in modular casing.     

Nurses discuss bedside handover and using written handover sheets

Background The analysis of nursing errors in clinical management highlighted that clinical handover plays a pivotal role in patient safety. Changes to handover including conducting handover at the bedside and the use of written handover summary sheets were subsequently implemented. Aim The aim of the study was to explore nurses’ perspectives on the introduction of bedside handover and the use of written handover sheets. Method Using a qualitative approach, data were obtained from six focus groups containing 30 registered and enrolled (licensed practical) nurses. Thematic analysis revealed several major themes. Findings Themes identified included: bedside handover and the strengths and weaknesses; patient involvement in handover, and good communication is about good communicators. Finally, three sources of patient information and other issues were also identified as key aspects. Conclusions How bedside handover is delivered should be considered in relation to specific patient caseloads (patients with cognitive impairments), the shift (day, evening or night shift) and the model of service delivery (team versus patient allocation). Implications for nursing management Flexible handover methods are implicit within clinical setting issues especially in consideration to nursing teamwork. Good communication processes continue to be fundamental for successful handover processes.