124,779 research outputs found
Performance analysis in field hockey goalkeeping during penalty corners: a case study.
No full textAbstract
BACKGROUND:
To investigate the kinematics of field hockey goalkeeping during penalty corners, in order to provide the first model of performance from a physical standpoint during this particular and important phase of goalkeeping that goes from the injection of the ball (the push-in) up to the shot on goal during a penalty corner. In particular, the focus was on the preparation phase before the actual saves.
METHODS:
Four goalkeepers playing at the international level (age: 22±2.45 years; height: 1.85±0.09 m; body weight: 79.25±8.42 kg; BMI: 23.06±0.69 kg·m-2; role experience 11.5±1.91 years; international caps: 30.00±15.25) participated in the study. A complete video footage was recorded using two high-speed video cameras, using 210 fps sampling rates.
RESULTS:
The goalkeepers covered 1.48±0.32 m, using 3.23±0.43 steps, from the goal line in about 1.33±0.21 s. The estimated mean acceleration was 0.93±0.54 m·s-2. Differences in these parameters were found among the goalkeepers (One-Way ANOVA; p<0.05, ES as partial η²>0.14), also demonstratinga different technical efficiency in relation to the task to be performed.
CONCLUSIONS:
The results of this case study confirm that the principal aim of the goalkeepers during the preparation phase of defending penalty corners is to arrive in the best position of readiness within the available time frame of about 1.5 s. They ran out from the goal line about 1.5 m, not reaching an ideal better distance (≈ 4m), for tactical reasons, concerning the possible interventions of other attackers arriving close to the posts, to enlarge the goalmouth
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
ARIELLA PERLMAN Flute SENIOR RECITAL Saturday, April 1, 2006 3:00 p.m. Lillian H. Duncan Recital Hall
No full textAudio quality degrades near the end of the recording.Program: Sonata in G Minor, BWV 1020 / Johann Sebastian Bach (1685-1750) -- Le Merle Noir
/ Olivier Messiaen (1908-1992) -- Trio for Flute, Oboe, and Piano / Madeleine Dring (1923-1977) -- Sonata "Undine," Op.167 / Carl Reinecke (1824-1910) -- Arcana / Elizabeth Brown (b.1953).This recital is given in partial fulfillment of the requirements for the degree Bachelor of Music
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Examining a teacher-led physically active mathematics intervention: teachers’ perceptions of the facilitators and barriers to implementation in UK primary schools
No full textIntroduction: This study aimed to address a gap in the literature by examining Key Stage One teachers’ perceptions of the facilitators and barriers to implementing physically active mathematics lessons in UK primary schools after administering a physically active mathematics intervention for 6 weeks. Incorporating physical activity into academic lessons presents a unique approach to increasing physical activity among children without compromising the time allotted for academic lessons.
Methods: The intervention was designed in collaboration with the participants and the research team. The study employed a mixed methods approach, utilizing a parallel design in which 14 current key stage one teachers (men = 1, women=13) participated. The participating teachers delivered 6 weeks of physically active mathematics lessons in their respective schools. Training (through two preparatory workshops), schemes of work, and equipment were provided to participants before the intervention began. Survey data were collected through pre- and post-intervention surveys and a weekly intervention delivery log. Participants engaged in individual semi-structured interviews post-intervention. Survey data were analyzed using descriptive statistical analysis.
Results: The combined average number of minutes participants could implement physically active mathematics lessons each week was 59 min. Paired samples t-tests revealed a significant increase in participants’ confidence in delivering physically active mathematics lessons from pre-intervention (M = 2.86, SD = 2.23) to post-intervention (M = 8.31, SD = 1.07; t (12) = −6.739, p < 0.001). Interview data were transcribed verbatim and analyzed through thematic analysis. Several facilitators and barriers to implementing PALs were identified. Key facilitators identified in this study included training, availability of ready-to-use resources, and increased teacher confidence. Furthermore, physically active lessons (PALs) were easier to implement in contexts where play-based learning approaches from the early years foundations stage could naturally extend into subsequent years. However, key barriers included classroom management challenges, time constraints, and space limitations. Additionally, the specific timing of implementation posed challenges, with cold weather restricting outdoor activities and Christmas-related commitments detracting from the time available for PALs.
Discussion: This study highlights the feasibility of implementing physically active mathematics lessons into the curriculum of UK primary schools and provides key considerations for schools aiming to successfully implement these lessons to best aid the implementation of physically active mathematics lessons
Pragmatic Case Studies as a Source of Unity in Applied Psychology
No full textTo unify or not to unify applied psychology: that is the question. In this article we review pendulum swings in the historical efforts to answer this question—from a comprehensive, positivist, “top-down,” deductive yes between the 1930s and the early 60s, to a postmodern no since then. A rationale and proposal for a limited, “bottom-up,” inductive yes in applied psychology is then presented, employing a case-based paradigm that integrates both positivist and postmodern themes and components. This paradigm is labeled “pragmatic psychology” and, its specific use of case studies, the “Pragmatic Case Study Method” (“PCS Method”). We call for the creation of peer-reviewed journal-databases of pragmatic case studies as a foundational source of unifying applied knowledge in our discipline. As one example, the potential of the PCS Method for unifying different angles of theoretical regard is illustrated in an area of applied psychology, psychotherapy, via the case of Mrs. B. The article then turns to the broader historical and epistemological arguments for the unifying nature of the PCS Method in both applied and basic psychology.Peer reviewe
The rehearsal : as it is now acted at the Theatre-Royal
No full text[4], 59, [1] p. ; 23 cm. "The third edition with amendments [sic] and large additions by the author." Signatures: [A]², B-H⁴, I². Errors in paging: p. 28, 29, 32 misnumbered "27," "28," "31," respectively. By the Duke of Buckingham, assisted by Martin Clifford, Thomas Sprat, and others. Cf. Camb. Hist. Eng. Lit., and D.N.B. Discolored pages. Tight margins with text near gutter and page edges
Dr. Edwin Wright Collection: Author Unknown
No full textNotes - The author relates several short stories about his neighbours including Alex McDonell, homesteading and life around Meanook and Athabasca (1 page
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
Measurement of the ratio of branching fractions B(B0→K∗0γ )/B(B0s→φγ ) and the directCP asymmetry inB 0→K∗0γ
No full textThe ratio of branching fractions of the radiative B decays B0→K⁎0γ and B0s→ϕγ has been measured using an integrated luminosity of 1.0 fb−1 of pp collision data collected by the LHCb experiment at a centre-of-mass energy of s√=7TeV. The value obtained is
B(B0→K⁎0γ)B(B0s→ϕγ)=1.23±0.06(stat.)±0.04(syst.)±0.10(fs/fd),
where the first uncertainty is statistical, the second is the experimental systematic uncertainty and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average value for B(B0→K⁎0γ), the branching fraction B(B0s→ϕγ) is measured to be (3.5±0.4)×10−5.
The direct CP asymmetry in B0→K⁎0γ decays has also been measured with the same data and found to be
ACP(B0→K⁎0γ)=(0.8±1.7(stat.)±0.9(syst.))%.
Both measurements are the most precise to date and are in agreement with the previous experimental results and theoretical expectations
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