141,376 research outputs found
Lindsaea hamiguitanensis D. N. Karger & V. B. Amoroso 2012, sp. nov.
No full text<i>Lindsaea hamiguitanensis</i> D.N.Karger & V.B.Amoroso, sp. nov. (Fig. 2) <p> <b>Type:</b> — PHILIPPINES. Mindanao: Davao Oriental, Mount Hamiguitan, 6°44'4.16" N, 126° 9'59.88" E, 1100 m, 1 November 2009, <i>Karger 444</i> (holotype PNH!, isotypes UC!, Z!).</p> <p> <i>Lindsaea rhizomate breve repente, pinnulis alternis, remotis, utrinque circa 2–5, 1.0– 1.8 cm longis, 0.8–1.0 cm latis, non incisis, textura herbacea, colore laete virente, petiolibusque rigidis, 10–30 cm longis, quadrangularibus.</i></p> <p>Plants terrestrial. Rhizomes short-creeping, 1.00– 1.75 mm diameter, scales ferruginous, very narrowly triangular, to 1.5 mm long. Petioles 10–30 cm long, to 4 times longer than the laminae, sharply quadrangular, dark reddish brown (proximally) to pale, with more or less well defined paler margins. Laminae triangular, 6– 13 cm long, bipinnate to (basally) tripinnate-pinnatifid, rachises reddish brown, with pale margins, sharply quadrangular. Major primary pinnae 4–6 to a side, spreading to moderately ascending, triangular, the largest (at the bases) to 6 cm long, to 4 cm wide, the proximal ones up to their width apart, the distal ones closer to each other. Distal pinnae gradually reduced, with a conform terminal pinna, costae dark green, slightly winged, adaxially sulcate. Proximal primary pinnae basally with some pinnules 1–3 cm long. Pinnules 2–5 on each side, herbaceous, light green when dry, slightly ascending, not contiguous, dimidiate-ovate to subtrapeziform (basally), the larger ones 1–1.8 cm long, 0.8–1 cm wide, 1.5–2 times longer than wide, margins continuous, rarely incised. Pinnules at lower primary pinnae shallowly incised. Distal pinnules gradually reduced, distal ones confluent with the acuminate terminal segment. Veins free, ca. 1.5 mm apart, 1- or 2-forked. Sori continuous, rarely incised on the basiscopic pinnules of the proximal primary pinnae, convex, extending 1/2 to 2/3 of the length of the pinnules along the sides of the pinnules, to 15 mm long, multinerval. Indusia coloured as the pinnules, indusial margins entire, rarely slightly erose, 0.5–0.7 mm wide, not reaching the margin by 1–1.5 times of their width. Spores trilete.</p> <p> <b>Distribution and habitat:—</b> Known only from Mount Hamiguitan, Mindanao, Philippines, where it grows in lower montane rainforest at 1100–1200 m.</p> <p> <b>Etymology:—</b> The species is named for the type locality.</p> <p> <b>Additional specimen examined (paratype):—</b> PHILIPPINES. Mindanao: Davao Oriental, Mount Hamiguitan, 6°44'4.16" N, 126°9'59.88" E, 1100 m, 1 November 2009, <i>Karger 426</i> (Central Mindanao University Herbarium!, UC!, Z!).</p>Published as part of <i>Karger, Dirk Nikolaus, Lehtonen, Samuli, Amoroso, Victor B. & Kessler, Michael, 2012, A new species of Lindsaea (Lindsaeaceae, Polypodiopsida) from Mt. Hamiguitan, Mindanao, Philippines, pp. 15-20 in Phytotaxa 56 (1)</i> on pages 18-19, DOI: 10.11646/phytotaxa.56.1.4, <a href="http://zenodo.org/record/5061092">http://zenodo.org/record/5061092</a>
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
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
FIGURE 2. A–C. Lindsaea hamiguitanensis D.N.Karger & V.B.Amoroso. A. Habit. B. Rhizome scale. C in A new species of Lindsaea (Lindsaeaceae, Polypodiopsida) from Mt. Hamiguitan, Mindanao, Philippines
No full textFIGURE 2. A–C. Lindsaea hamiguitanensis D.N.Karger & V.B.Amoroso. A. Habit. B. Rhizome scale. C. Pinnule, abaxial, showing indusium. All from Karger 444 (Z).Published as part of Karger, Dirk Nikolaus, Lehtonen, Samuli, Amoroso, Victor B. & Kessler, Michael, 2012, A new species of Lindsaea (Lindsaeaceae, Polypodiopsida) from Mt. Hamiguitan, Mindanao, Philippines, pp. 15-20 in Phytotaxa 56 (1) on page 18, DOI: 10.11646/phytotaxa.56.1.4, http://zenodo.org/record/506109
high-performance immobilized-metal affinity chromatography of proteins on iminodiacetic acid silica-based bonded phase
No full textPersonalized Experiences for End-User Programming on the Web
No full textIn this position paper we explore current work in AtomsMasher, an end-user reactive programming environment for the Web, highlight ongoing work in user interface design, privacy, and sharing, and look towards a future of extending end-user programming from simple tasks to complete experiences
Wicked Problems and Gnarly Results: Reflecting on Design and Evaluation Methods for Idiosyncratic Personal Information Management Tasks
No full textThis paper is a case study of an artifact design and evaluation process; it is a reflection on how right thinking about design methods may at times result in sub-optimal results. Our goal has been to assess our decision making process throughout the design and evaluation stages for a software prototype in order to consider where design methodology may need to be tuned to be more sensitive to the domain of practice, in this case software evaluation in personal information management. In particular, we reflect on design methods around (1) scale of prototype, (2) prototyping and design process, (3) study design, and (4) study population
Information scraps: how and why information eludes our personal information management tools
No full textIn this paper we describe information scraps -- a class of personal information whose content is scribbled on Post-it notes, scrawled on corners of random sheets of paper, buried inside the bodies of e-mail messages sent to ourselves, or typed haphazardly into text files. Information scraps hold our great ideas, sketches, notes, reminders, driving directions, and even our poetry. We define information scraps to be the body of personal information that is held outside of its natural or We have much still to learn about these loose forms of information capture. Why are they so often held outside of our traditional PIM locations and instead on Post-its or in text files? Why must we sometimes go around our traditional PIM applications to hold on to our scraps, such as by e-mailing ourselves? What are information scraps' role in the larger space of personal information management, and what do they uniquely offer that we find so appealing? If these unorganized bits truly indicate the failure of our PIM tools, how might we begin to build better tools? We have pursued these questions by undertaking a study of 27 knowledge workers. In our findings we describe information scraps from several angles: their content, their location, and the factors that lead to their use, which we identify as ease of capture, flexibility of content and organization, and avilability at the time of need. We also consider the personal emotive responses around scrap management. We present a set of design considerations that we have derived from the analysis of our study results. We present our work on an application platform, jourknow, to test some of these design and usability findings
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