683 research outputs found
The next bibliometrics: ALMetrics (Author Level Metrics) and the multiple faces of author impact
Get PDFThe main goal of this article is to describe the purpose and content of a new branch of bibliometrics: ALMetrics (Author-Level Metrics). ALMetrics is focused on the quantitative analysis of an author's performance by measuring the dimensions of their intellectual activity as shown through varied metric indicators. This article will list, define, and classify the different metrics that are offered in newer information portals that showcase the scientific activity of authors. These metrics are grouped into five sets: bibliometrics (publication and citation), usage, participation, rating, social connectivity, and composite indicators. This new bibliometric specialty is necessary because of new trends in scientific assessment, which have moved analysis away from old bibliometrics (based on journal analysis and Impact Factor) towards new bibliometrics that analyze both documents and authors via a mix of indicators. Most importantly, ALMetrics responds to the researchers' desire for both knowledge and acknowledgement.Orduña Malea, E.; Martín-Martín, A.; Delgado-López-Cózar, E. (2016). The next bibliometrics: ALMetrics (Author Level Metrics) and the multiple faces of author impact. profesional de la información. 25(3):485-496. doi:10.3145/epi.2016.may.18S48549625
Pengaruh Model Pembelajaran Inquiry Terhadap Hasil Belajar Pendidikan Kesehatan Sekolah Di Prodi PJKR UPMI
No full textPenelitian ini adalah penelitian untuk mengeksplorasi cara menerapan model pembelajaran berbasis inkuiri dapat meningkatkan hasil buku PJOK pada siswa di program studi UPMI. Ada dua kelompok siswa yang diberi perlakuan berbeda: kelompok eksperimen menggunakan model pembelajaran interaktif, sementara kelompok kontrol menggunakan metode pengajaran tradisional. Penelitian yang digunakan adalah kuantitatif dan eksperimental. Dari hasil penelitian ditemukan bahwa penggunaan model pengajaran interdisipliner dapat meningkatkan hasil belajar siswa secara signifikan, terutama dalam berpikir kritis dan pemecahan masalah. Ide ini berasal dari penelitian sebelumnya yang menunjukkan bahwa pembelajaran berdasarkan Inquiry dapat membuat siswa lebih termotivasi untuk belajar dan membantu mereka memahami konsep yang dipelajarinya (Zheng, Warschauer, & Zheng, 2018; Furtak et al., 2012). Gagasan pokok penelitian ini adalah agar model pembelajaran berbasis Inquiry dapat digunakan secara efektif untuk meningkatkan hasil belajar siswa khususnya pada bidang pendidikan kesehatan
Listening Behavior of The Library’s Staffs In Responding Visitor’s Queries Jurnal Pendidikan dan Konseling Volume 5 Nomor 1 Tahun 2023 E-ISSN: 2685-936X dan P-ISSN: 2685-9351 Universitas Pahlawan Tuanku Tambusai
No full textPenelitian ini menganalisis tentang perilaku mendengarkan dua puluh satu pegawai Perpustakaan Umum berdasarkan jenis kelamin, usia, pendidikan, dan respon mendengarkan non-verbal mereka seperti tetap mendengarkan atau tidak, tersenyum, dan memberikan tanggapan seperti menjawab pertanyaan pengunjung. apakah jawabannya panjang atau tidak. Hasilnya, pegawai perpustakaan yang mendengarkan sekitar 47% lulusan diploma. Berdasarkan usia mereka, sebagian besar berusia 46-55 tahun sekitar 54% mendengarkan permintaan pengunjung. Respon staf yang tersenyum saat menjawab pertanyaan hampir sama untuk semua kategori, dan untuk usia 46-55 tahun ada 4 orang yang tersenyum, yaitu 50% dari total yang tersenyum pada kategori usia. Dengan memberikan jawaban panjang, diploma memiliki 4 orang (57%). Pada kategori umur 35-45 tahun dan 46-55 tahun memiliki hasil yang sama dari total yang menjawab panjang. Sebagai bahan pertimbangan, staf yang bergelar sarjana hanya ada 3 orang, artinya pada kategori pendidikan semua staf bergelar sarjana mendengarkan pertanyaan pengunjung dan memberikan jawaban panjang yang ditanggapi
Total synthesis of 7-Epi-FR 66979 and 7-Epi-FR 900482
No full textThe completion of the total synthesis of 7-Epi-FR 66979 and 7-Epi-FR 900482 is presented in this thesis. The natural product FR 66979 and FR 900482 were isolated by the Fujisawa Pharmaceutical Corporation from Streptomyces sandaensis. They are antibiotics with potent antitumor activity. The first stage of the total synthesis is to make indole ester. For the preparation of the precursor of the indole ester, the commercial available starting material 3-hydroxymethylphenol was converted to benzyl aldehyde by using the reagents paraformaldehyde and lewis catalyst SnCl4 after the selective protection of hydroxymethyl group. After the phenol had been protected, this benzyl aldehyde precursor was transformed to indole ester by the Hemetsberger-Knittel reaction in 61% yield. The second stage of the total synthesis is to make fully functionalized pyrroloindole. The indole ester was reduced by DIBAL and then was oxidized to indole aldehyde. The vinylsulfonium salt reacted with this indole aldehyde to form the tetracyclic oxirane, then subsequently treated by sodium azide in acetone-water to afford pyrroloindole in 74% yield. The third stage of the total synthesis is to synthesize the core ring system. The fully functionalized pyrroloindole was successfully oxidized by two equivalents of dimethydioxirane (DMDO) in acetone/water to give ring expanded hydroxylamine hemiketal ring system in 57% yield. The final stage of the total synthesis is to complete the total synthesis. One of the challenging steps is to prepare the hydroxylmethyl group on this core structure. With many studies, the hydrosilylation-oxidation was found to be a good method to make the hydroxymethyl group on this complex molecule. After converting the hydroxymethyl group to urethane and deprotection, 7-Epi-FR 66979 was successfully obtained. With a one step oxidation of 7-Epi-FR 66979, 7-Epi-FR 900482 was prepared. This total synthesis is the shortest and most efficient so far. Epi-FR 66979 is synthesized in 20 steps while epi-FR 900482 required 21 steps. The attempt of making the beta configuration of the hydroxymethyl group on the 7-position for FR 66979 and FR 900482 is also described in this thesis. The efforts included intramolecular hydrosilylation-oxidation, less hindered intermolecular hydrosilylation-oxidation, catalytic hydroboration-oxidation and Danishefsky's methods of the epoxidation and opening. Both less hindered intermolecular hydrosilylation-oxidation and Danishefsky's methods provided intermediate with beta configuration of hydroxymethyl, but the final product was not obtained. A less hindered intermolecular hydrosilylation-oxidation method will provide the best chance to get the natural product when additional more intermediates are prepared in the future.Ph.D.Includes abstractVitaIncludes bibliographical referencesby Weidong Pa
Preliminary Characterization of Predictive Factors of the Visual Change after Epi-On and Epi-Off Corneal Collagen Crosslinking Techniques
Get PDFPurpose. To investigate the potential predictive factors of the visual change achieved with accelerated epi-on and epi-off corneal collagen crosslinking (CXL) in keratoconus. Methods. This retrospective comparative study analyzed 67 eyes treated with an accelerated epithelium-on (epi-on group) and epithelium-off (epi-off group) CXL. The clinical outcomes were evaluated and compared during a 1-year follow-up. Likewise, the relationship of the change achieved with both CXL techniques in the corrected distance visual acuity (CDVA) with different preoperative data was investigated. Results. The mean CDVA change at 3 months postoperatively was −0.04 ± 0.19 and −0.07 ± 0.25 in the epi-on and epi-off groups, respectively (p = 0.809). In the epi-on group, this change was significantly correlated with the preoperative apical (r = −0.375, p = 0.045) and central corneal thickness (r = −0.402, p = 0.031). In the epi-off group, the CDVA change was significantly correlated with not only the preoperative apical (r = 0.402, p = 0.028) and central corneal thickness (r = 0.367, p = 0.046) but also with some topometric and aberrometric indices (r ≤ −0.374, p ≤ 0.042). Furthermore, the change in CDVA in the epi-on group could be predicted from age, preoperative refractive astigmatism J45 component, anterior corneal asphericity, and posterior corneal high order aberration root mean square (p = 0.002, R2 = 0.503). In the epi-off group, the CDVA change could be predicted from the preoperative minimum corneal thickness and magnitude of the vertical anterior corneal primary coma component (p = 0.001, R2 = 0.446). Conclusions. Clearly, different predictive factors of the visual change induced with the accelerated epi-on and epi-off CXL techniques are present, suggesting a different mechanism of action for stiffening the cornea and inducing changes in this structure.The author David P. Piñero was supported by the Ministry of Economy, Industry and Competitiveness of Spain within the program Ramón y Cajal, RYC-2016-20471
Development of Audio-Visual Media on the Physical Motor Development of Students in Big Kindergarten
Get PDFThis study aims to determine the effect of the development of audio-visual media on the motor-physical development of students in BIG Kindergarten. This study involved early childhood students aged 5-6 years as participants. An audio-visual-based online learning approach was used in this study to introduce students to interesting physical activities and support the development of their motor skills. This research method use appropriate methods. The proposed solution is the use of audio-visual media which contains games as access to learning materials to develop children's gross motor skills. LCD/Projector is used to display learning videos. The results showed that the audio-visual media developed, including jumping over shapes, hot ball cold ball, cloth rolling ball, light ball, stepping on a tiger's tail, kangaroo ball game, and motion exercises and songs, had a positive influence on students' physical-motor development. Assessments from physical education experts, sports experts, and teachers show that this media gets a high score in the very good category. Based on the results of this study, it can be concluded that the development of audio-visual media in learning gross motor skills has a positive impact on the physical-motor development of early-age students. This media also received a positive response from students and educators, indicating a higher level of motivation and involvement in sports learning. This research contributes to the development of an innovative and effective learning approach in improving gross motor skills of early childhood students
El año que nos volvimos insostenibles: Análisis de la producción española en Sustainability (2020)
Get PDFThe journal Sustainability, published by MDPI, was the journal that published the most papers by researchers from Spanish institutions in 2020. This justifies a detailed examination of the Spanish scientific production in this journal. At the same time, the work of editing monographic issues in which papers with Spanish authors have been published is analyzed. For this purpose, we have identified whether each paper belongs to regular or to special issues of the journal, identifying whe-ther the author of the paper is also editor of the monograph, or a university colleague. The nationality of the editors was also studied. The subject matter of the articles and their belonging to the area of the journal were analyzed. Most of the papers published by Spanish authors were published in special issues (81.6%), mainly edited by authors of the same natio-nality (63.1%). It is also found that there is an important production carried out by the same editor of the monograph, or by colleagues from the same institution. It is also found that a substantial number of works published inSustainability (42.3%)
have minimal or no relationship with the subject of sustainability. Finally, the implications of these findings are discussed under the light of the publication strategies of Spanish researchers and the science evaluation policies applied in Spain. The main controversial aspects identified have to do with the publication of papers on other subjects, the value of publishing in monographs, which in some cases could be considered as inbreeding, and the short editing times.La revista Sustainability, de la editorial MDPI, fue en 2020 la revista que publicó más trabajos de investigadores de instituciones españolas. Esto justifica un examen detallado de la producción científica española en dicha revista. Se analiza también la labor de edición de números monográficos en los cuales se han publicado trabajos con autores españoles. Para ello se ha identificado la pertenencia de cada trabajo a números especiales y a números regulares de la revista, identificando si el autor del trabajo es también editor del monográfico, o compañero de universidad. Igualmente se estudia la nacionalidad de los editores. Se analiza la temática de los artículos y su pertenencia al área de la revista. La mayor parte de los trabajos publicados por autores españoles se difundieron en números especiales (81,6%), principalmente editados por autores de la misma nacionalidad (63,1%). Se ve asimismo que existe una importante producción realizada por el mismo editor del monográfico, o por colegas de la misma institución. También se encuentra que un número sustancial de trabajos publicados en Sustainability (42,3%) guarda una relación mínima o inexistente con la temática de la Sostenibilidad. Finalmente, se discuten las implicaciones de estos hallazgos a la luz de las estrategias de publicación de los investigadores españoles y de las políticas de evaluación de la ciencia aplicadas en España. Los principales aspectos polémicos identificados tienen que ver con la publicación de trabajos de otros temas, el valor de la publicación en monográficos que en algunos casos podrían ser considerados como endogamia y los reducidos tiempos de edición
Wikipedia gender gap: a scoping review
Get PDFIn this scoping review, we portray an examination of the gender gap on Wikipedia by analyzing scholarly literature from 2007 to 2022. Employing quantitative methods, the study identifies key author characteristics such as gender, disciplines, countries, and institutions. The research reveals a slight majority of female authors, followed by male authors, with limited representation from non-binary authors. Qualitatively, content analysis uncovers two central themes: addressing the contribution gap and incorporating content related to underrepresented genders. Additionally, the study assesses results on the content gap, editing and participation bias, readership imbalances, and strategies to mitigate the gender gap. Furthermore, it explores the repercussions of this gap and categorizes the contributing factors as “the women’s problem,” “the mirror effect,” and “the systemic problem.” Overall, this comprehensive review enhances our comprehension of the Wikipedia gender gap and provides valuable insights into the research landscape in this domain
A Characterization of 0-epi Maps with a Degree
No full textAbstractA map of the form I−f with a strictly condensing operator f is 0-epi if and only if it has nonzero degree on a component of its domain of definition. This proves a conjecture of the second author in M. Väth, J. Math. Anal. Appl.257 (2001), 223–237
Investigation of the 3-epi-25(OH)D3 of 25-hydroxyvitamin D3 in urban schoolchildren
Get PDFBackground: The physiological relevance C-3 epimer of 25-hydroxyvitamin D [3-epi-25(OH)D] is not well understood among youth.
Objective: To assess whether demographic/physiologic characteristics were associated with 3-epi-25(OH)D3 concentrations in youth.
Methods: Associations between 3-epi-25(OH)D3 and demographics, 3-epi-25(OH)D3, total 25-hydroxyvitamin (25(OH)D) (25(OH)D2 + 25(OH)D3), total cholesterol, HDL, LDL and triglycerides were examined in racially/ethnically diverse schoolchildren (n=682, 8-15yrs) at Boston-area urban schools.
Results: Approximately 50% of participants had detectable 3-epi-25(OH)D3 (range 0.95-3.95 ng/mL). The percentage of 3-epi-25(OH)D3 of total 25(OH)D ranged from 2.5 to 17.0% (median 5.5%). Males were 38% more likely than females to have detectable 3-epi-25(OH)D3 concentrations. Both Asian and black race/ethnicity were associated with lower odds of having detectable 3-epi-25(OH)D3 compared to non-Hispanic white children ((Asian vs. white, OR 0.28, 95%CI 0.14-0.53; black vs. white, OR 0.38, 95%CI 0.23-0.63, pThe accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
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