1,643 research outputs found

    Linguistic expectation management in online discourse processing: An investigation of Dutch inderdaad 'indeed' and eigenlijk 'actually'

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    Interpersonal discourse particles (DPs), such as Dutch inderdaad (≈‘indeed’) and eigenlijk (≈‘actually’) are highly frequent in everyday conversational interaction. Despite extensive theoretical descriptions of their polyfunctionality, little is known about how they are used by language comprehenders. In two visual world eye-tracking experiments involving an online dialogue completion task, we asked to what extent inderdaad, confirming an inferred expectation, and eigenlijk, contrasting with an inferred expectation, influence real-time understanding of dialogues. Answers in the dialogues contained a DP or a control adverb, and a critical discourse referent was replaced by a beep; participants chose the most likely dialogue completion by clicking on one of four referents in a display. Results show that listeners make rapid and fine-grained situation-specific inferences about the use of DPs, modulating their expectations about how the dialogue will unfold. Findings further specify and constrain theories about the conversation-managing function and polyfunctionality of DPs

    A method for dense packing discovery

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    The problem of packing a system of particles as densely as possible is foundational in the field of discrete geometry and is a powerful model in the material and biological sciences. As packing problems retreat from the reach of solution by analytic constructions, the importance of an efficient numerical method for conducting \textit{de novo} (from-scratch) searches for dense packings becomes crucial. In this paper, we use the \textit{divide and concur} framework to develop a general search method for the solution of periodic constraint problems, and we apply it to the discovery of dense periodic packings. An important feature of the method is the integration of the unit cell parameters with the other packing variables in the definition of the configuration space. The method we present led to improvements in the densest-known tetrahedron packing which are reported in [arXiv:0910.5226]. Here, we use the method to reproduce the densest known lattice sphere packings and the best known lattice kissing arrangements in up to 14 and 11 dimensions respectively (the first such numerical evidence for their optimality in some of these dimensions). For non-spherical particles, we report a new dense packing of regular four-dimensional simplices with density ϕ=128/2190.5845\phi=128/219\approx0.5845 and with a similar structure to the densest known tetrahedron packing.Comment: 15 pages, 5 figure

    Learning on electrical circuits while playing 'E&E electrical endeavours' : design research on a serious game optimizing for conceptual understanding

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    In a two year design research project, a serious game was developed in a close collaboration of educational researchers, game-designers and secondary school teachers. In a first round, the game was used in classroom employing an open-inquiry format. It was found that the game had a strong impact on the student’s conceptual development but that it provoked the construction of misconceptions. The game was then adapted and partially redesigned on the basis of the evaluation outcomes and additional expert-review. Also the way of using the game in classroom was redesigned and written down in a teachers’ guide. In a second round this pedagogical approach to using the game in classroom alternating open inquiry type gaming-episodes with guided reflection and internalisation episodes, was used. Again a strong impact on students’ conceptual understanding of electrical circuits was found. Significantly less misconceptions occurred. The results indicate that the close collaboration of school teachers, educational experts and game designers was fruitful for improving the serious game and its use in school practice. Moreover it became clear that serious games have a potential to strongly contribute to students’ conceptual understanding, in particular by the mental model implicitly represented in the game´s layout and structure

    Trends in sexually transmitted infections in the Netherlands, combining surveillance data from general practices and sexually transmitted infection centers

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    <p>Abstract</p> <p>Background</p> <p>Sexually transmitted infections (STI) care in the Netherlands is primarily provided by general practitioners (GPs) and specialized STI centers. STI surveillance is based on data from STI centers, which show increasing numbers of clients. Data from a GP morbidity surveillance network were used to investigate the distribution in the provision of STI care and the usefulness of GP data in surveillance.</p> <p>Methods</p> <p>Data on STI-related episodes and STI diagnoses based on ICPC codes and, for chlamydia, prescriptions, were obtained from GP electronic medical records (EMRs) of the GP network and compared to data from STI centers from 2002 to 2007. Incidence rates were estimated for the total population in the Netherlands.</p> <p>Results</p> <p>The incidence of STI-consultations and -diagnoses increased substantially in recent years, both at GPs and STI centers. The increase in consultations was larger than the increase in diagnoses; Chlamydia incidence rose especially at STI centers. GPs were responsible for 70% of STI-related episodes and 80-85% of STI diagnoses. STI centers attract relatively younger and more often male STI-patients than GPs. Symptomatic STIs like <it>Herpes genitalis </it>and genital warts were more frequently diagnosed at GPs and chlamydia, gonorrhea and syphilis at STI centers.</p> <p>Conclusions</p> <p>GPs fulfill an important role in STI care, complementary to STI centers. Case definitions of STI could be improved, particularly by including laboratory results in EMRs. The contribution of primary care is often overlooked in STI health care. Including estimates from GP EMRs can improve the surveillance of STIs.</p

    Проектирование оборудования автоцистерны для применения в подразделениях добровольной пожарной охраны на базе специального автомобиля АРС-14

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    Актуальность данной работы заключается в том, что пожары с течением времени охватывают большую территорию и наносит значительный экономический ущерб сельским поселениям, удаленным на значительное расстояние от подразделений ФПС МЧС России. В связи с этим укомплектование добровольно пожарных команд ВДПО является решением данной проблемы. Целью данной работы является повышение эффективности ведения пожаротушения подразделениями ВДПО.The relevance of this work is that fires over time cover a large area and cause significant economic damage to rural settlements remote from a significant distance from the units of the Federal Emergency Service of Russia. In this regard, the manning of volunteer firefighters VDPO is the solution to this problem. The purpose of this work is to increase the efficiency of firefighting by VDPO units

    Functional and Clinical Outcomes After Plate Osteosynthesis Versus Intramedullary Nailing of a Humeral Shaft Fracture:The Results of the HUMMER Multicenter, Prospective Cohort Study

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    BACKGROUND: Plate osteosynthesis (referred to throughout as plating) and intramedullary nailing (referred to throughout as nailing) are the most common operative strategies for humeral shaft fractures. However, it is undecided which treatment is more effective. This study aimed to compare functional and clinical outcomes of these treatment strategies. We hypothesized that plating would result in an earlier recovery of shoulder function and fewer complications. METHODS: From October 23, 2012, to October 3, 2018, adults with a humeral shaft fracture, OTA/AO type 12A or 12B, were enrolled in a multicenter, prospective cohort study. Patients were treated with plating or nailing. Outcome measures included the Disabilities of the Arm, Shoulder and Hand (DASH) score, Constant-Murley score, ranges of motion of the shoulder and elbow, radiographic healing, and complications until 1 year. Repeated-measure analysis was done with correction for age, sex, and fracture type. RESULTS: Of the 245 included patients, 76 were treated with plating and 169 were treated with nailing. Patients in the plating group were younger, with a median age of 43 years compared with 57 years for the nailing group (p &lt; 0.001). The mean DASH score after plating improved faster over time, but did not differ significantly from the score after nailing at 12 months (11.7 points [95% confidence interval (CI), 7.6 to 15.7 points]) for plating and 11.2 points [95% CI, 8.3 to 14.0 points] for nailing). The Constant-Murley score and shoulder abduction, flexion, external rotation, and internal rotation displayed a significant treatment effect (p treatment ≤ 0.001), in favor of plating. The plating group had 2 implant-related complications, whereas the nailing group had 24, including 13 nail protrusions and 8 screw protrusions. Plating resulted in more postoperative temporary radial nerve palsy (8 patients [10.5%] compared with 1 patient [0.6%]; p &lt; 0.001) and a trend toward fewer nonunions (3 patients [5.7%] compared with 16 patients [11.9%]; p = 0.285) than nailing. CONCLUSIONS: Plating of a humeral shaft fracture in adults results in faster recovery, especially of shoulder function. Plating was associated with more temporary nerve palsies, but fewer implant-related complications and surgical reinterventions, than nailing. Despite heterogeneity in implants and surgical approach, plating seems to be the preferred treatment option for these fractures. LEVEL OF EVIDENCE: Therapeutic Level II . See Instructions for Authors for a complete description of levels of evidence.</p
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