5 results
Validation of the Swedish Version of the Scale Mood Spectrum Self Report (MOODS-SR)
- M. Ioannou, M. Dellepiane, A. Benvenuti, K. Feloukatzis, N. Skondra, S. Steingrimsson
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- Journal:
- European Psychiatry / Volume 30 / Issue S1 / March 2015
- Published online by Cambridge University Press:
- 15 April 2020, p. 1
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Introduction
Mood Spectrum Self Report (MOODS-SR) is an innovative instrument to assess mood spectrum symptomatology. This may provide a better way of conceptualizing the psychopathology of affective disorders.
AimPsychometric evaluation of the Swedish adaptation of MOODS-SR, lifetime version.
MethodsPatients with affective disorders were recruited from outpatient services at Sahlgrenska University Hospital. Patients and a convenience sample of healthy controls were offered to fill in the MOODS-SR. This is a preliminary analysis of the collected data; data from more participants will be presented at the conference. Internal consistency was evaluated using Cronbach's α and the mean score on subdomains compared between groups using a Student's t-test in STATA.
ResultsSeptember 2014, 22 patients with affective disorders and 67 controls had answered the MOODS-SR. The age (mean ± sd) of patients was 39.8 ± 11.8 years compared to 40.7 ± 12.7 years of controls (p=0.79). The patient and the control group consisted of females by 73% and 69% respectively (p=0.33). Cronbach's α was 0.89 in patients and 0.90 in controls regarding the total score on the 7 subdomains; i) mood depressive, ii) mood manic, iii) energy depressive, iv) energy manic, v) cognition depressive, vi) cognition manic, vii) rhythmicity. The mean scores on the 7 subdomains were all statistically significantly higher among patients (p value<0.001).
ConclusionThe Swedish MOODS-SR, lifetime version, has good internal consistency among both patients with affective disorders and controls. Furthermore, the patient group displayed consistently higher mean scores than the control group in all subdomains.
Psychometric evaluation of a 33-item subset of MOODS-SR for distinguishing bipolar disorder
- M. Ioannou, M. Dellepiane, A. Benvenuti, K. Feloukatzis, N. Skondra, S. Steingrimsson
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- Journal:
- European Psychiatry / Volume 33 / Issue S1 / March 2016
- Published online by Cambridge University Press:
- 23 March 2020, p. s223
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Introduction
The MOODS-SR is a self-report instrument consisting of 161 dichotomous items. It is designed to assess lifetime presence of mood spectrum psychopathology. Recently, it has been proposed that a subset of 33 items can be used to distinguishing bipolar disorder.
AimTo evaluate psychometric properties of a 33-item subset and to propose a clinically relevant cut-off for screening for bipolar disorder.
MethodsPatients with mood disorders were recruited from outpatient services at Sahlgrenska University Hospital. Patients and a convenience sample of healthy controls were offered to fill in the MOODS-SR. A post-hoc analysis was conducted for the 33-items subset of the MOODS-SR.
ResultsThe subset showed high internal consistency (Cronbach α = 0.95). The mean scores of patients with bipolar disorder (22.7 ± 6.4) were significantly higher than those of the unipolar (11.3 ± 4.9) and control group (7.0 ± 7.0, P < 0.005). A significant correlation was found between YMRS (r = 0.50, P < 0.005) and the 33-item subset, but not with MADRS (r = –0.22, P = 0.223).
ConclusionThe 33-item subset of MOODS-SR showed promising psychometric properties, including good known-group validity. It discriminated bipolar patients from unipolar patients and healthy subjects. The clinical usefulness of these finding needs further investigation.
Disclosure of interestThe authors have not supplied their declaration of competing interest.
15 - Automotive control
- from Part III - Applications
- Edited by Jan Lunze, Ruhr-Universität, Bochum, Germany, Françoise Lamnabhi-Lagarrigue, Centre National de la Recherche Scientifique (CNRS), Paris
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- Book:
- Handbook of Hybrid Systems Control
- Published online:
- 21 February 2011
- Print publication:
- 15 October 2009, pp 439-470
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Summary
Automotive systems offer a rich opportunity for hybrid models, controls, and tools. Beyond the traditional use of hybrid models for representing the behavior of the composition of discrete controller and continuous plants, automotive mechanical systems exhibit hybrid behavior as demonstrated in this chapter. In addition, hybrid systems can be used to capture system specifications at the highest level of abstraction and to model implementation architectures thus enabling a rich design space exploration.
Introduction
This chapter presents an application of hybrid systems that is of significant industrial interest: power-train modeling and control for automobiles.
Engine control is a challenging problem that involves many functional and non functional requirements. The problem is to develop control algorithms and their implementation with guaranteed properties that can substantially reduce emissions and gas consumption with increased performance.
The introduction of hybrid system modeling and control was motivated by the need for verifying closed-loop systems where the plant to be controlled are continuous-time systems and the controller is a digital system. However, hybrid models are general enough to be useful in other areas of design. In particular, engine control offers a rich set of application of hybrid systems:
The power-train itself can be represented as a hybrid system. In fact, an accurate model of a four-stroke gasoline engine has a “natural” hybrid representation:
Each cylinder in the engine has four discrete modes of operation corresponding to the stroke it is in (hence, its behavior is well represented by a finite state machine (FSM)). […]
12 - Impacts of oceanography on the foraging dynamics of seabirds in the North Sea
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- By F. Daunt, NERC Centre for Ecology and Hydrology, Banchory Research Station, Hill of Brathens, Banchory AB31 4BW, UK, S. Wanless, NERC Centre for Ecology and Hydrology, Banchory Research Station, Hill of Brathens, Banchory AB31 4BW, UK, G. Peters, Centre d'Ecologie et Physiologie Energétiques, Centre National de la Recherche Scientifique, 23 rue Becquerel, 67087 Strasbourg Cedex 2, France, S. Benvenuti, Dipartimento di Etologia, Ecologia ed Evoluzione, Università di Pisa, Via Volta 6, I-56126 Pisa, Italy, J. Sharples, Proudman Oceanographic Laboratory, Bidston Observatory, Birkenhead CH43 7RA, UK, D. Grémillet, Centre d'Ecologie et Physiologie Energétiques, Centre National de la Recherche Scientifique, 23 rue Becquerel, F-67087 Strasbourg Cedex 2, France, B. Scott, Department of Zoology, School of Biological Sciences, University of Aberdeen, Tillydrone Avenue, Aberdeen AB24 2TZ, UK
- Edited by I. L. Boyd, University of St Andrews, Scotland, S. Wanless, NERC Centre for Ecology and Hydrology, UK
- C. J. Camphuysen, Royal Netherlands Institute for Sea Research
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- Book:
- Top Predators in Marine Ecosystems
- Published online:
- 31 July 2009
- Print publication:
- 11 May 2006, pp 177-190
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Summary
Prey densities of at least 100× the average are necessary for profitable foraging by auks
A. G. Gaston (2004)To meet the above requirement, seabirds rely on prey being distributed in patches (Gaston 2004). Oceanography has a profound impact on the distribution of marine life (Miller 2004), and top predators frequently congregate in areas with a high prey biomass (Boyd & Arnbom 1991, Hunt et al. 1999). However, the impact of ocean physics on top-predator foraging behaviour is poorly understood, largely because of the complex trophic linkages involved. In particular, a detailed understanding of the interaction between seabirds and their prey is lacking. Two main methods are currently available to quantify seabird behaviour: animal-borne instrumentation and at-sea observations (see Box 12.1). In this chapter, we examine the impacts of oceanography on the foraging dynamics of North Sea seabirds during the breeding season. The seabirds of the North Sea are primarily piscivorous, with the majority wholly or largely dependent on the lesser sandeel Ammodytes marinus in summer (Furness & Tasker 2000). Using three seabird species with contrasting foraging strategies and dependence on sandeels, we test three specific predictions from the hypothesis that oceanography determines seabird foraging location and behaviour, using data from animal-borne instrumentation, oceanography and primary production collected concurrently. We interpret our findings in the context of the behaviour of seabirds' prey.
13 - Foraging energetics of North Sea birds confronted with fluctuating prey availability
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- By M. R. Enstipp, Centre d'Ecologie et Physiologie Energétiques, Centre National de la Recherche Scientifique, 23 rue Becquerel, F-67087 Strasbourg Cedex 2, France, F. Daunt, NERC Centre for Ecology and Hydrology, Banchory Research Station, Hill of Brathens, Banchory AB31 4BW, UK, S. Wanless, NERC Centre for Ecology and Hydrology, Banchory Research Station, Hill of Brathens, Banchory AB31 4BW, UK, E. M. Humphreys, Earth Biosphere Institute and School of Biology, Ecology and Evolution Group, University of Leeds, Leeds LS2 9JT, UK, K. C. Hamer, Earth Biosphere Institute and School of Biology, Ecology and Evolution Group, University of Leeds, Leeds LS2 9JT, UK, S. Benvenuti, Dipartimento di Etologia, Ecologia ed Evoluzione, Università di Pisa, Via Volta 6, I-56126 Pisa, Italy, D. Grémillet, Centre d'Ecologie et Physiologie Energétiques, Centre National de la Recherche Scientifique, 23 rue Becquerel, F-67087 Strasbourg Cedex 2, France
- Edited by I. L. Boyd, University of St Andrews, Scotland, S. Wanless, NERC Centre for Ecology and Hydrology, UK
- C. J. Camphuysen, Royal Netherlands Institute for Sea Research
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- Book:
- Top Predators in Marine Ecosystems
- Published online:
- 31 July 2009
- Print publication:
- 11 May 2006, pp 191-210
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Summary
In the western North Sea, a large seabird assemblage exploits a limited number of fish species. Sandeels are particularly important prey items in this system, with populations that show strong spatial and temporal variability. This variability might be triggered by oceanic climatic features but could also be influenced by human activities, especially fisheries. In order to assess how different sandeel consumers are buffered against fluctuations in prey availability, we studied the foraging energetics of common guillemots, black-legged kittiwakes, European shags and northern gannets at two major colonies in southeast Scotland. Our analysis was based on: (a) time budgets recorded with data loggers attached to breeding adults foraging at sea; (b) metabolic measurements of captive and free-ranging individuals; and (c) information on diet and parental effort. We calculated daily food intake and feeding rates of chick-rearing adults and examined a number of hypothetical scenarios, to investigate how birds might be buffered against reduced sandeel availability. Our results suggest that under the conditions currently operating in this region, shags and guillemots may have sufficient time and energy available to increase their foraging effort considerably, whereas kittiwakes and gannets are more constrained by time and energy respectively. Of the species considered here, gannets are working at the highest metabolic level during chick rearing, and hence, have the least physiological capacity to increase foraging effort. However, to compensate for their energetically costly life, gannets might make use of a highly profitable foraging niche.