86,526 research outputs found
Human-robot interaction and psychoanalysis
No full textPsychological attitudes towards service and personal robots are selectively examined from the vantage point of psychoanalysis. Significant case studies include the uncanny valley effect, brain-actuated robots evoking magic mental powers, parental attitudes towards robotic children, idealizations of robotic soldiers, persecutory fantasies involving robotic components and systems. Freudian theories of narcissism, animism, infantile complexes, ego ideal, and ideal ego are brought to bear on the
interpretation of these various items. The horizons of Human-robot Interaction are found to afford new and fertile grounds for psychoanalytic theorizing beyond strictly therapeutic contexts
Effetti dento-scheletrici in pazienti in crescita con malocclusione di classe II associati al trattamento con twin-block: risultati preliminari.
No full textTwin Block treatment in growing Class II patients: Dento-skeletal effects
No full textOBJECTIVES. The aim of this study was to verify dento-skeletal changes produced by Twin Block (TB) treatment in growing patients with Class II malocclusions by mandibular retrusion, compared with untreated Class II subjects.MATERIALS AND METHODS. The data were derived from private practice records. A total of 12 patients treated with TB appliances were compared with 12 untreated controls. The two groups were matched for age and type of malocclusion.RESULTS. The t-test showed no statistically significant differences between patients and controls at To. The comparison between the two groups showed significant mean changes and the TB appliance appeared to have some effects on the skeletal sagittal intermaxillary and dental relationships.CONCLUSIONS. The TB appliance appeared to be effective in prepubertal patients with Class II malocclusion by mandibular retrusion.OBJECTIVES. The aim of this study was to verify dento-skeletal changes produced by Twin Block (TB) treatment in growing patients with Class II malocclusions by mandibular retrusion, compared with untreated Class II subjects. MATERIALS AND METHODS. The data were derived from private practice records. A total of 12 patients treated with TB appliances were compared with 12untreated controls. The two groups were matched for age and type of malocclusion. RESULTS. The t-test showed no statistically significant differences between patients and controls at T0. The comparison between the two groups showed significant mean changes and the TB appliance appeared to have some effects on the skeletal sagittal intermaxillary and dental relationships. CONCLUSIONS. The TB appliance appeared to be effective in prepubertal patients with Class II malocclusion by mandibular retrusion
Bioprinting of human dermal microtissues precursors as building blocks for endogenous in vitro connective tissue manufacturing
No full textThe advent of 3D bioprinting technologies in tissue engineering has unlocked the potential to fabricate in vitro tissue models, overcoming the constraints associated with the shape limitations of preformed scaffolds. However, achieving an accurate mimicry of complex tissue microenvironments, encompassing cellular and biochemical components, and orchestrating their supramolecular assembly to form hierarchical structures while maintaining control over tissue formation, is crucial for gaining deeper insights into tissue repair and regeneration. Building upon our expertise in developing competent three-dimensional tissue equivalents (e.g. skin, gut, cervix), we established a two-step bottom-up approach involving the dynamic assembly of microtissue precursors (μTPs) to generate macroscopic functional tissue composed of cell-secreted extracellular matrix (ECM). To enhance precision and scalability, we integrated extrusion-based bioprinting technology into our established paradigm to automate, control and guide the coherent assembly of μTPs into predefined shapes. Compared to cell-aggregated bioink, our μTPs represent a functional unit where cells are embedded in their specific ECM. μTPs were derived from human dermal fibroblasts dynamically seeded onto gelatin-based microbeads. After 9 days, μTPs were suspended (50% v/v) in Pluronic-F127 (30% w/v) (μTP:P30), and the obtained formulation was loaded as bioink into the syringe of the Dr.INVIVO-4D6 extrusion based bioprinter. μTP:P30 bioink showed shear-thinning behavior and temperature-dependent viscosity (gel at T > 30 °C), ensuring μTPs homogenous dispersion within the gel and optimal printability. The bioprinting involved extruding several geometries (line, circle, and square) into Pluronic-F127 (40% w/v) (P40) support bath, leveraging its shear-recovery property. P40 effectively held the bioink throughout and after the bioprinting procedure, until μTPs fused into a continuous connective tissue. μTPs fusion dynamics was studied over 8 days of culture, while the resulting endogenous construct underwent 28 days culture. Histological, immunofluorescence analysis, and second harmonic generation reconstruction revealed an increase in endogenous collagen and fibronectin production within the bioprinted construct, closely resembling the composition of the native connective tissues
Secondary alveolar bone grafting using autologous versus alloplastic material in the treatment of cleft lip and palate patients: systematic review and meta-analysis
No full textAbstract Background A systematic review assessing autologous versus alloplastic bone for secondary alveolar bone grafting in patients with cleft lip and palate was published in 2011 and included only one randomized controlled trial comparing traditional iliac bone graft to recombinant human bone morphogenetic protein-2 (rh-BMP2). Objectives To perform a systematic review with meta-analysis on the use of secondary alveolar bone grafting (autologous bone and rh-BMP2 graft) in order to improve bone volume and height in patients with cleft lip and palate. Data sources An electronic search was conducted via PubMed/MEDLINE, Cochrane Central Register of Controlled Trials (CONTROL) via Cochrane Library, EMBASE via Ovid, and LILAC for studies published between January 2008 and September 2018. The systematic review registration number at PROSPERO was 42018085858. Eligibility criteria Only RCTs were included. Inclusion criteria were patients with the diagnosis of unilateral cleft lip and palate older than 5 years of age, radiographic evaluation (CT and/or CBCT) of the cleft area, and at least a 6-month follow-up. Main outcome measures Bone formation and bone height by radiographic CT evaluation (preoperatively, after 6 months and after 1 year of follow-up) and length of hospital stay were assessed. Results Four studies met strict inclusion criteria. Autologous bone graft showed statistically significant higher bone formation after 6-month follow-up (MD − 14.410; 95% CI − 22.392 to − 6.428; p = 0.000). No statistically significant difference was noted after a 1-year follow-up (MD 6.227; 95% CI − 15.967 to 28.422; p = 0.582). No statistically significant difference in bone height was noted after 6-month (MD − 18.737; 95% CI − 43.560 to 6.087; p = 0.139) and 1-year follow-up (MD − 4.401; 95% CI − 30.636 to 21.834; p = 0.742). Patients who underwent rh-BMP2 graft had a statistically significant reduced hospital stay (MD − 1.146; 95% CI − 2.147 to − 0.145; p = 0.025). Limitations The main limitation is the high risk of bias among included studies. Conclusion Autologous bone and rh-BMP2 graft showed a similar effectiveness in maxillary alveolar reconstruction in patients with unilateral cleft lip and palate assessing bone graft volume and height although rh-BMP2 graft showed a relative shorter length of hospital stay (high uncertainty level)
Variations on the Author
No full text“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
[Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]
No full textNewspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
Also By The Same Author: AKTiveAuthor, a Citation Graph Approach to Name Disambiguation
No full textThe desire for definitive data and the semantic web drive for inference over heterogeneous data sources requires co-reference resolution to be performed on those data. In particular, name disambiguation is required to allow accurate publication lists, citation counts and impact measures to be determined. This paper describes a graph-based approach to author disambiguation on large-scale citation networks. Using self-citation, co-authorship and document source analyses, AKTiveAuthor clusters papers, achieving precision of 0.997 and recall of 0.818 over a test group of eight surname clusters
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