251 research outputs found

    Ambivalence resolution in emotion-focused therapy: The successful case of Sarah

    Get PDF
    Ambivalence can be understood as a cyclical movement between two opposing positions of the self: one expressed in a novelty—an innovative moment (IM)—and another one conveyed by a return to the maladaptive pattern. If not properly addressed and resolved during therapy, ambivalence can prevent change and lead to psychotherapeutic failure. Two processes of ambivalence resolution have been suggested: (1) the dominance of the innovative position and consequent inhibition of the problematic position and (2) the negotiation between both positions. Objectives: To empirically study both processes of ambivalence resolution in a successful case of emotion-focused therapy. Method: Sessions were independently coded with three coding systems—the IMs, the return to the problem and the ambivalence resolution. Results: Ambivalence tended to be resolved from the initial to the final sessions. Although resolutions through dominance tended to decrease and resolutions through negotiation seemingly increased along treatment, dominance was, nonetheless, the most prominent process of resolution along the whole treatment. Conclusions: Although it has been suggested that integrating opposing parts of the self is a necessary process for psychotherapeutic success, a less integrative process of ambivalence resolution may also be an important resource along the process.Portuguese Foundation for Science and Technology and the Portuguese Ministry of Science, Technology and Higher Education through national funds and co-financed by FEDER through COMPETE2020 under the PT2020 Part- nership Agreement (POCI-01-0145-FEDER-007653

    Electrical Characterization of Thin-Film Transistors Based on Solution-Processed Metal Oxides

    Get PDF
    This chapter provides a brief introduction to thin-film transistors (TFTs) based on transparent semiconducting metal oxides (SMOs) with a focus on solution-processed devices. The electrical properties of TFTs comprising different active layer compositions (zinc oxide, aluminum-doped zinc oxide and indium-zinc oxide) produced by spin-coating and spray-pyrolysis deposition are presented and compared. The electrical performance of TFTs is evaluated from parameters as the saturation mobility (μsat), the TFT threshold voltage (Vth) and the on/off current (Ion/Ioff) ratio to demonstrate the dependence on the composition of the device-active layer and on ambient characterization conditions (exposure to UV radiation and to air)

    MARVEL, a Tool for Prediction of Bacteriophage Sequences in Metagenomic Bins

    Get PDF
    Here we present MARVEL, a tool for prediction of double-stranded DNA bacteriophage sequences in metagenomic bins. MARVEL uses a random forest machine learning approach. We trained the program on a dataset with 1,247 phage and 1,029 bacterial genomes, and tested it on a dataset with 335 bacterial and 177 phage genomes. We show that three simple genomic features extracted from contig sequences were sufficient to achieve a good performance in separating bacterial from phage sequences: gene density, strand shifts, and fraction of significant hits to a viral protein database. We compared the performance of MARVEL to that of VirSorter and VirFinder, two popular programs for predicting viral sequences. Our results show that all three programs have comparable specificity, but MARVEL achieves much better performance on the recall (sensitivity) measure. This means that MARVEL should be able to identify many more phage sequences in metagenomic bins than heretofore has been possible. In a simple test with real data, containing mostly bacterial sequences, MARVEL classified 58 out of 209 bins as phage genomes; other evidence suggests that 57 of these 58 bins are novel phage sequences. MARVEL is freely available at https://github.com/LaboratorioBioinformatica/MARVEL

    Discovery of optical pulsations in V2116 Ophiuchi/GX 1+4

    Get PDF
    We report the detection of pulsations with 124\sim 124 s period in V2116 Oph, the optical counterpart of the low-mass X-ray binary GX 1+4. The pulsations are sinusoidal with modulation amplitude of up to 4% in blue light and were observed in ten different observing sessions during 1996 April-August using a CCD photometer at the 1.6-m and 0.6-m telescopes of Laborat\'orio Nacional de Astrof\'{\i}sica, in Brazil. The pulsations were also observed with the UBVRIUBVRI fast photometer. With only one exception the observed optical periods are consistent with those observed by the BATSE instrument on board the Compton Gamma Ray Observatory at the same epoch. There is a definite correlation between the observability of pulsations and the optical brightness of the system: V2116~Oph had RR magnitude in the range 15.315.515.3-15.5 when the pulsed signal was detected, and R=16.017.7R = 16.0-17.7 when no pulsations were present. The discovery makes GX 1+4 only the third of 35\sim 35 accretion-powered X-ray pulsars to be firmly detected as a pulsating source in the optical. The presence of flickering and pulsations in V2116 Oph adds strong evidence for an accretion disk scenario in this system. The absolute magnitude of the pulsed component on 1996 May 27 is estimated to be MV1.5M_V \sim -1.5. The implied dimensions for the emitting region are 1.1 R_{\sun}, 3.2 R_{\sun}, and 7.0 R_{\sun}, for black-body spectral distributions with T=105T = 10^5 K, 2×1042 \times 10^4 K, and 1×1041 \times 10^4 K, respectively.Comment: 9 pages, 3 figures in PostScript, latex, accepted for publication on the Astrophysical Journal Letter

    Ergonomics and human factors as a requirement to implement safer collaborative robotic workstations: a literature review

    Get PDF
    There is a worldwide interest in implementing collaborative robots (Cobots) to reduce work-related Musculoskeletal Disorders (WMSD) risk. While prior work in this field has recognized the importance of considering Ergonomics & Human Factors (E&HF) in the design phase, most works tend to highlight workstations’ improvements due to Human-Robot Collaboration (HRC). Based on a literature review, the current study summarises studies where E&HF was considered a requirement rather than an output. In this article, the authors are interested in understanding the existing studies focused on Cobots’ implementation with ergonomic requirements, and the methods applied to design safer collaborative workstations. This review was performed in four prominent publications databases: Scopus, Web of Science, Pubmed, and Google Scholar, searching for the keywords ‘Collaborative robots’ or ‘Cobots’ or ‘HRC’ and ‘Ergonomics’ or ‘Human factors’. Based on the inclusion criterion, 20 articles were reviewed, and the main conclusions of each are provided. Additionally, the focus was given to the segmentation between studies considering E&HF during the design phase of HRC systems and studies applying E&HF in real-time on HRC systems. The results demonstrate the novelty of this topic, especially of the real-time applications of ergonomics as a requirement. Globally, the results of the reviewed studies showed the potential of E&HF requirements integrated into HRC systems as a relevant input for reducing WMSD risk.This work has been supported by FCT–Fundação para a Ciência e Tecnologia and MIT Portugal Program under the doctoral Grant SFRH/BD/151365/2021. This work has been also supported by NORTE-06-3559-FSE-000018, integrated in the invitation NORTE-59-2018-41, aiming the Hiring of Highly Qualified Human Resources, co-financed by the Regional Operational Programme of the North 2020, thematic area of Competitiveness and Employment, through the European Social Fund. Additionally, has been also supported by FCT within the Project “I-CATER–Intelligent robotic Coworker Assistant for industrial Tasks with an Ergonomics Rationale”, Ref. PTDC/EEIROB/3488/2021, and within R&D Units Project Scope: UIDB/00319/2020

    Cálculo do volume na equação de van der Waals pelo método de cardano

    Full text link
    Analytical solutions of a cubic equation with real coefficients are established using the Cardano method. The method is first applied to simple third order equation. Calculation of volume in the van der Waals equation of state is afterwards established. These results are exemplified to calculate the volumes below and above critical temperatures. Analytical and numerical values for the compressibility factor are presented as a function of the pressure. As a final example, coexistence volumes in the liquid-vapor equilibrium are calculated. The Cardano approach is very simple to apply, requiring only elementary operations, indicating an attractive method to be used in teaching elementary thermodynamics

    La(2/3)Sr(1/3)MnO(3) thin films deposited by laser ablation on lithium niobate substrates

    Get PDF
    The structural, magnetic and transport properties of La(2/3)Sr(1/3)MnO(3) thin films, prepared by laser ablation on LiNbO(3) substrates, have been characterized for different temperatures and applied magnetic fields. The deposited films have grown highly oriented, with a (111) preferred growth direction. Their lattice parameter was a = 3.86 angstrom. From the temperature dependence of the magnetization and of the electrical resistivity their Curie (T(C)) and metal-insulator (T(MI)) transition temperatures were determined (T(C) similar to 360 K, T(MI) similar to 260 K). Spin-dependent tunnelling across grain boundaries was found to dominate the behaviour of the transport properties of the La(2/3)Sr(1/3)MnO(3) thin films, on the studied temperature region.I.T. Gomes gratefully acknowledges a PhD grant from Fundação para a Ciência e Tecnologia (SFRH/BD/36348/2007)

    Three narrative-based coding systems: innovative moments, ambivalence and ambivalence resolution

    Get PDF
    Narrative and dialogical perspectives suggest that personal meaning systems’ flexibility is an important resource for change in psychotherapy. Drawn from these theoretical backgrounds, a research program focused on the identification of Innovative Moments (IMs) - exceptions to the inflexible meaning systems present in psychopathological suffering - has been carried out. For this purpose, three process-oriented coding systems were developed: the Innovative Moments Coding System (IMCS), the Ambivalence Coding System (ACS), and the Ambivalence Resolution Coding System (ARCS). They allow, respectively, for the study of change, ambivalence, and ambivalence resolution in therapy. This paper presents these coding systems, the main findings that resulted from their application to different samples and therapeutic models, the main current and future lines of research, as well as the clinical applications of this research program.This research was supported by the Portuguese Foundation for Science and Technology (FCT) through the Post-doctoral Grants SFRH/BPD/108674/2015, SFRH/BPD/95859/2013, SFRH/BPD/98196/2013, SFRH/BPD/84157/2012, and SFRH/BPD/80671/2011, and the doctoral grants SFRH/BD/92408/2013, SFRH/BD/86808/2012, SFRH/BD/77324/2011, SFRH /BD/ 88277/2012. This research was conducted at Psychology Research Centre (UID/PSI/01662/2013), University of Minho, and supported by the Portuguese Foundation for Science and Technology and the Portuguese Ministry of Science, Technology and Higher Education through national funds and co-financed by FEDER through COMPETE2020 under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007653)
    corecore