Water Pipeline Leakage Detection Based on Machine Learning and Wireless Sensor Networks

The detection of water pipeline leakage is important to ensure that water supply networks can operate safely and conserve water resources. To address the lack of intelligent and the low efficiency of conventional leakage detection methods, this paper designs a leakage detection method based on machine learning and wireless sensor networks (WSNs). The system employs wireless sensors installed on pipelines to collect data and utilizes the 4G network to perform remote data transmission. A leakage triggered networking method is proposed to reduce the wireless sensor network’s energy consumption and prolong the system life cycle effectively. To enhance the precision and intelligence of leakage detection, we propose a leakage identification method that employs the intrinsic mode function, approximate entropy, and principal component analysis to construct a signal feature set and that uses a support vector machine (SVM) as a classifier to perform leakage detection. Simulation analysis and experimental results indicate that the proposed leakage identification method can effectively identify the water pipeline leakage and has lower energy consumption than the networking methods used in conventional wireless sensor networks

A systematic review of measurement uncertainty visualizations in the context of standardized assessments

This systematic review summarized findings of 29 studies evaluating visual presentation formats appropriate for communicating measurement uncertainty associated with standardized clinical assessment instruments. Studies were identified through systematic searches of multiple databases (Medline, Embase, PsycInfo, ERIC, Scopus, and Web of Science). Strikingly, we found no studies which were conducted using samples of clinicians and included clinical decision-making scenarios. Included studies did however find that providing participants with information about measurement uncertainty may increase awareness of uncertainty and promote more optimal decision making. Formats which visualize the shape of the underlying probability distribution were found to promote more accurate probability estimation and appropriate interpretations of the underlying probability distribution shape. However, participants in the included studies did not seem to benefit from the additional information provided by such plots during decision-making tasks. Further explorations into how presentations of measurement uncertainty impact clinical decision making are needed to examine whether findings of the included studies generalize to clinician populations. This review provides an important overview of pitfalls associated with formats commonly used to communicate measurement uncertainty in clinical assessment instruments, and a potential starting point for further explorations into promising alternatives. Finally, our review offers specific recommendations on how remaining research questions might be addressed.</p

Psychometric properties of a sign language version of the Mini International Neuropsychiatric Interview (MINI)

Background There is a need for psychiatric assessment instruments that enable reliable diagnoses in persons with hearing loss who have sign language as their primary language. The objective of this study was to assess the validity of the Norwegian Sign Language (NSL) version of the Mini International Neuropsychiatric Interview (MINI). Methods The MINI was translated into NSL. Forty-one signing patients consecutively referred to two specialised psychiatric units were assessed with a diagnostic interview by clinical experts and with the MINI. Inter-rater reliability was assessed with Cohen’s kappa and “observed agreement”. Results There was 65% agreement between MINI diagnoses and clinical expert diagnoses. Kappa values indicated fair to moderate agreement, and observed agreement was above 76% for all diagnoses. The MINI diagnosed more co-morbid conditions than did the clinical expert interview (mean diagnoses: 1.9 versus 1.2). Kappa values indicated moderate to substantial agreement, and “observed agreement” was above 88%. Conclusion The NSL version performs similarly to other MINI versions and demonstrates adequate reliability and validity as a diagnostic instrument for assessing mental disorders in persons who have sign language as their primary and preferred language

Paternalism, patient autonomy, and moral deliberation in the physician-patient relationship: Attitudes among Norwegian physicians

Sixteen statements on physician attitudes in the physician-patient relationship were presented to a representative sample of Norwegian physicians (N=990). Three moderately correlated theoretical dimensions were identified in a principal component analysis: paternalism, patient autonomy, and moral deliberation. The paternalism scores increased significantly with age, and psychiatrists scored significantly lower than physicians in somatic specialties. Psychiatrists had the highest scores on the patient autonomy dimension, whereas surgeons scored the lowest. Moral deliberation scores increased slightly with age. To explore the pattern of scores across the three dimensions, the scores were dichotomized and combined in eight different ways. The resulting typology included five different physician profiles: (1) classical paternalists (high scores on paternalism, low scores on both patient autonomy and moral deliberation), (2) modern paternalists (high scores on both paternalism and deliberation, low scores on patient autonomy), (3) autonomists ( high scores on patient autonomy, low scores on both paternalism and deliberation), (4) deliberationists (high scores on deliberation and patient autonomy, low scores on paternalism), and (5) ambivalents (high or low scores on all dimensions, or high or low scores on both paternalism and patient autonomy). The four groups of physicians with 'consistent' attitudes contained between 12 and 19% of the total sample, whereas 37% belonged to the 'ambivalent' group. Laboratory doctors and surgeons belonged significantly more often in the group of classical paternalists than did general practitioners, whereas male physicians were more often modern paternalists than were female physicians. Among the autonomists, women were more numerous than men, doctors in their 40s clearly more numerous than those in their 60s, and psychiatrists clearly more numerous than residents.Physician-patient relationship Physician attitudes Norway Medical profession

Forsøk med Sykmeldt i Jobb

Målsettingen med forsøksprosjektet Sykmeldt i jobb (SMJ) var å teste om ordningen kunne redusere sykefraværet, blant annet ved at tidligere utprøving av arbeidsevne under sykdom og raskere og riktigere gradering av sykmeldingen og reduksjon av den enkeltes samlede sykefravær som følge av dette

The ethics of euthanasia--Attitudes and practice among Norwegian physicians

The ethical guidelines of the Norwegian Medical Association strongly condemn physician participation in euthanasia and assisted suicide. A previous study on attitudes towards euthanasia in the Norwegian population, however, indicates that a substantial part of the population is quite liberal. This study explores Norwegian physicians' attitudes towards and experience with end of life dilemmas. Sixty-six percent of a representative sample of 1476 who received postal questionnaires responded. They confirmed that Norwegian physicians actually seem to hold quite restrictive attitudes towards euthanasia. Seventeen percent answered yes to a question of whether a physician should have the opportunity to actively end the life of a terminal patient in great pain who requests this help, while 4% agreed that the same could be done to a chronically ill patient with great pain and a poor quality of life who otherwise would have several more years to live. Six percent of the physicians had performed actions intended to hasten a patient's death, while 76% said that they at least once had treated patients even if they had felt that treatment should have been discontinued. A multiple logistic regression analysis showed that internal medicine specialists, surgeons and psychiatrists were significantly more restrictive than their colleagues in laboratory specialties, and that physicians educated abroad and those with negative attitudes towards patient autonomy had more liberal attitudes towards euthanasia, when gender and time since graduation from medical school were controlled for.euthanasia physicians patient autonomy

Factor analyzing the Norwegian MATRICS Consensus Cognitive Battery

Aim: The MATRICS Consensus Cognitive Battery (MCCB) assesses seven cognitive domains with 10 subtests. This domain structure has not been demonstrated. Three factors have been produced in US samples. We examined the dimensional structure of the Norwegian MCCB. In addition, we studied the contribution of each subtest to the battery sum score. Methods: The participants were 131 patients with schizophrenia spectrum disorders and 300 healthy controls. Their Norwegian MCCB test scores were subject to exploratory and confirmatory factor analysis and regression analysis. Results: The theoretical MCCB factor structure was not shown. In the patient group, three‐factor and two‐factor models had acceptable fit. In both groups, the Symbol Coding, Spatial Span, Letter–Number Span, and Visual Learning subtests contributed most to the sum score. Conclusion: The theoretical domain structure of the MCCB could not be demonstrated in these Norwegian participants. Consonant with US studies, models with three and two factors had mediocre fit, and in the schizophrenia spectrum disorder group only. In both groups, the subtests Symbol Coding, Working Memory, and Learning were the most sensitive in tapping general neurocognitive performance, supporting US results. We conclude that in both Norway and the USA, the MCCB generates the same cognitive domains through factor analysis, but that these domains are not the ones suggested by the MATRICS project. This research has been published in Psychiatry and Clinical Neurosciences. © 2017 Wile

G-estimation of causal pathways in vocational rehabilitation for adults with psychotic disorders – a secondary analysis of a randomized trial

Background Vocational rehabilitation (VR) has increasingly become an important intervention targeting poor occupational functioning in schizophrenia. The Norwegian Job Management Program (JUMP), sought to enhance occupational outcomes by augmenting VR with either cognitive behavioral therapy (CBT) techniques aiming to improve psychotic symptoms or cognitive remediation (CR) aiming to improve cognition. CBT is standard treatment in schizophrenia, but recent meta-analyses question the effect of CBT on negative psychotic symptoms. It is of interest to study the causal role of psychotic symptoms and cognitive functioning on occupational functioning. Methods Data from the JUMP VR – program, was reanalyzed with a causal inference method to assess the causal effects of reduced symptoms / improved neurocognitive functioning on occupational functioning measured by number of working hours per week. Participants (N = 131) had been randomized to either VR + CBT (N = 68) or VR + CR (N = 63). Large improvements in number of working hours were demonstrated in both intervention groups (nonsignificant group difference). G-estimation was used to assess the strength and nature of the causal effects, adjusted for time-varying confounding and selection – bias from loss to follow-up. Results Significant causal effects of reduction in each of four dimensions of symptoms and improved neurocognition respectively, on number of working hours were found (separate models). The effect of negative symptoms was the strongest and increased in magnitude during the whole observation period, while the effect of two other symptoms and neurocognition was constant. Adjusted for confounding (including potential feedback), the causal effect of a hypothetical change in negative symptoms equal to the average improvement in the CBT group corresponded to an increase in working hours of 3.2 h per week (95% CI: 1.11, 5.35). Conclusion High performance of g-estimation in a small psychiatric data set with few repeated measures and time-varying confounding and effects, was demonstrated. Augmented vocational rehabilitation showed causal effects of intervention targets with the strongest and increasing effect from negative symptoms on number of working hours. Combination of therapy and activation (indirect and direct approach) might explain improvement in both cognition and negative symptoms, and shed some light on effective ingredients for improved treatment of negative symptoms

Norwegian Clinicians’ Experiences of Learnability and Usability of SCID-II, SCID-5-PD and SCID-5-AMPD-I Interviews: A Sequential Multi-Group Qualitative Approach

The DSM-5 presents two competing diagnostic frameworks for personality disorders: the standard categorical model and the Alternative Model of Personality Disorders (AMPD). The AMPD was initially criticized for being too complex and theory laden for clinical implementation. Though inter-rater reliability studies have contested initial claims of the model’s complexity, little attention has been paid to how clinicians experience the usability and learnability of either model. We interviewed twenty Norwegian clinicians about their experiences with either the SCID-II/5-PD (n = 9), SCID-5-AMPD-I (n = 8), or both (n = 3). Separate thematic analyses were conducted for SCID-II/5-PD and SCID-5-AMPD-I groups, and group themes were compared. We identified four themes for each group, relating to required skills, training, challenges and information gained through the interview. We found that training and clinical experience were considered to be important for both interviews. Moreover, the SCID-5-AMPD-I was considered to rely more explicitly on theory specific to the development and content of the AMPD model in general and the LPFS specifically We also identified shared and unique challenges and shortcomings of each interview. We comment on how our findings relate to the debate surrounding the AMPD, and recommend development of clear training guidelines for both interviews