1,721,126 research outputs found
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
A lightweight BPMN extension for business process-oriented requirements engineering
Full text linkProcess-oriented requirements engineering approaches are often required to deal with the effective adaptation of existing processes in order to easily introduce new or updated requirements. Such approaches are based on the adoption of widely used notations, such as the one introduced by the Business Process Model and Notation (BPMN) standard. However, BPMN models do not convey enough information on the involved entities and how they interact with process activities, thus leading to ambiguities, as well as to incomplete and inconsistent requirements definitions. This paper proposes an approach that allows stakeholders and software analysts to easily merge and integrate behavioral and data properties in a BPMN model, so as to fully exploit the potential of BPMN without incurring into the aforementioned limitation. The proposed approach introduces a lightweight BPMN extension that specifically addresses the annotation of data properties in terms of constraints, i.e., pre- and post-conditions that the different process activities must satisfy. The visual representation of the annotated model conveys all the information required both by stakeholders, to understand and validate requirements, and by software analysts and developers, to easily map these updates to the corresponding software implementation. The presented approach is illustrated by use of two running examples, which have also been used to carry out a preliminary validation activity
Effects of two training protocols on the strength of the medius and maximus gluteus in adult women
No full textGluteal muscles are involved into a lot of daily life and sport movements. A review on the best exercises for
gluteal muscles1 suggests how to maximize the EMG activation of these muscles but does not offer any kind
of information about the best way to train and about the effects of a training period of gluteal muscles on
movement control. Aim of this study is to compare two different training protocols. Fifteen volunteer women
(36.6±5.5 yrs; 162.4±5.1 cm; 58.4±6.6 kg) were divided in two homogeneous training groups. Each group
was trained by the same instructor for 6 weeks, 2 time/w, 30'/session, the training volume and rest were the
same for both groups. Three analytical exercises with emphasis on gluteus medius (Gm) and three integrated
exercise with emphasis on gluteus maximus (GM) were performed in A-group and I-group respectively.
Manual muscle test with hand held dynamometer (Lafayette Instrument, Sagamore Pkwy, USA) and single
leg squat video analysis (Freestep, Sensor Medica, Guidonia-RM, Italy) were performed pre and post the
training period. Both Gm and GM strength significantly improved after both protocols (Gm ↑ 26% and 40%;
GM ↑ 78% and 90% in A-group and I-group respectively). I-group showed highest values of improvement in
comparison with A-group but there were only two significant differences (left Gm max strength and right GM
mean strength). No significant differences were found in single leg squat control and deepness for any group.
Gluteal muscles training seems to be effective both with analytical and integrated exercises. The study does
not show a strong significant difference between the groups in terms of strength improvement. Moreover
single leg squat control and deepness seems to be not connected with analytical or integrated gluteal
muscles training
Measuring shared electrons in extended molecular systems: Covalent bonds from plane-wave representation of wave function
Full text linkIn the study of materials and macromolecules by first-principle methods, the bond order is a useful tool to represent molecules, bulk materials and interfaces in terms of simple chemical concepts. Despite the availability of several methods to compute the bond order, most applications have been limited to small systems because a high spatial resolution of the wave function and an all-electron representation of the electron density are typically required. Both limitations are critical for large-scale atomistic calculations, even within approximate density-functional theory (DFT) approaches. In this work, we describe our methodology to quickly compute delocalization indices for all atomic pairs, while keeping the same representation of the wave function used in most compute-intensive DFT calculations on high-performance computing equipment. We describe our implementation into a post-processing tool, designed to work with Quantum ESPRESSO, a popular open-source DFT package. In this way, we recover a description in terms of covalent bonds from a representation of wave function containing no explicit information about atomic types and positions
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
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