1,721,160 research outputs found
Scissor bite in a young patient treated with an orthodontic-orthopedic device. A case report.
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“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
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Respiratory disorders in paediatric age: orthodontic diagnosis and treatment in dysmetabolic obese children and allergic slim children
No full textObesity and allergic susceptibility are worsening problems in the most industrialised countries. With different mechanisms, they both lead to a deterioration of children's life quality because they affect the respiratory system, leading to asthma and respiratory disorders such as mouth breathing and obstructive sleep apnoea. The latter are related to specific types of malocclusions that require an early diagnosis and specific multidisciplinary treatment. The purpose of this work is to show the characteristic signs and symptoms of these disorders in children of the two phenotypes (allergic and slim, obese and dysmetabolic). Intercepting such issues allows both pediatricians and paediatric dentists to refer the child to a multidisciplinary team of specialists able to deal, in a holistic way, with both the physical and behavioural causes, and also with the consequences on systemic and craniofacial development in particular
Cittanova - Heraclia 1987: risultati preliminari delle indagini geomorfologiche e paleogeografiche.
No full textVirtual study models: a comparison of modular application systems.
Full text linkAbstract
INTRODUCTION:
Virtual study models made their first appearance on the orthodontic market in 1999. The early systems offered two-dimensional images; reliable 3D images of study models were obtained only with the introduction of laser technology. Virtual study models have reduced the number of limitations and obstacles associated with the use of conventional plaster models and resulted in the creation of the "paperless orthodontic office". To understand their drawbacks, advantages and affordability, the different systems available for virtual dental casts were compared.
DISCUSSION:
The systems envisaging the use of 3D virtual study models are: Orthocad, e-models, Orthoproof, SureSmile, Invisalign and Libra. All of these systems offer model "manipulation" options, whereas only Orthocad, e-models and SureSmile offer advanced levels of software complexity, so as to ensure: virtual set-up, computer-aided bracket placement, planning and construction of orthodontic appliances. The use of hand-held scanners calls for highly specific skills. Basic requirements to use digital models include: a personal computer, internet access, management software.
CONCLUSION:
The digital elaboration of orthodontic study models is developing beyond the collection of morphologic and diagnostic data, towards the planning and production of orthodontic devices, through the use of morphing simulating the several phases of the treatment. Digital 3D models can be used at a basic and at a more advanced level, depending on the clinician's level of experience.
PMID: 20545088 [PubMed - indexed for MEDLINE
Geomechanical Behavior of Shales
No full textThe paper presents the recent advances and their relevance in the study of the geomechanical behavior of shales considering both experimental and modelling aspects. Shales are involved in several energy-related engineering applications where complex multiphysical conditions are encountered. Partial saturation, non-isothermal conditions, plasticity and damage mechanisms may have a fundamental impact on their geomechanical behavior. The relevance of these aspects for shales is presented in the paper both from advance experimental and modeling point of view
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