2,974 research outputs found

    Writing in your own voice: An intervention that reduces plagiarism and common writing problems in students' scientific writing.

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    In many of our courses, particularly laboratory courses, students are expected to engage in scientific writing. Despite various efforts by other courses and library resources, as instructors we are often faced with the frustration of student plagiarism and related writing problems. Here, we describe a simple Writing in Your Own Voice intervention designed to help students become more aware of different types of plagiarism and writing problems, avoid those problems, and practice writing in their own voice. In this article, we will introduce the types of plagiarism and writing problems commonly encountered in our molecular biology laboratory course, the intervention, and the results of our study. From the evaluation of 365 student reports, we found the intervention resulted in nearly 50% fewer instances of plagiarism and common writing problems. We also observed significantly fewer instances of severe plagiarism (e.g. several sentences copied from an external source). In addition, we find that the effects last for several weeks after the students complete the intervention assignment. This assignment is particularly easy to implement and can be a very useful tool for teaching students how to write in their own voices. © 2019 International Union of Biochemistry and Molecular Biology, 47(5):589-598, 2019

    Prediction of Monthly Discharge in Ungauged Catchments Under Agricultural Land Use in the Upper Ping Basin, Northern Thailand

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    The present paper describes a methodology proposed for surface runoff modelling in gauged and ungauged subcatchments of Northern Thailand. Gauged catchments are modelled using calibration against measured flow data, whereas streamflow in the ungauged subcatchments is simulated by a disaggregation procedure utilising measured streamflow data from a larger gauged catchment in which the ungauged subcatchment may be nested. The disaggregation technique is based on the assumption that the streamflow contribution from each subcatchment to the total catchment yield is proportional to a ratio of the catchment's area and its average slope. The Mae Chaem catchment in the Upper Ping River basin was selected as a case study for applying the approach. The model testing performed in two subcatchments, where the modelled streamflow was compared with the measured data, showed that the first pass approach algorithm provides the accuracy of 13-17% of the relative error for the monthly time step

    Functional Subdomains within Human FFA

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    Cataloged from PDF version of article.The fusiform face area (FFA) is a well-studied human brain region that shows strong activation for faces. In functional MRI studies, FFA is often assumed to be a homogeneous collection of voxels with similar visual tuning. To test this assumption, we used natural movies and a quantitative voxelwise modeling and decoding framework to estimate category tuning profiles for individual voxels within FFA. We find that the responses in most FFA voxels are strongly enhanced by faces, as reported in previous studies. However, we also find that responses of individual voxels are selectively enhanced or suppressed by a wide variety of other categories and that these broader tuning profiles differ across FFA voxels. Cluster analysis of category tuning profiles across voxels reveals three spatially segregated functional subdomains within FFA. These subdomains differ primarily in their responses for nonface categories, such as animals, vehicles, and communication verbs. Furthermore, this segregation does not depend on the statistical threshold used to define FFA from responses to functional localizers. These results suggest that voxels within FFA represent more diverse information about object and action categories than generally assumed. © 2013 the authors

    Ultrastructural Study of Yam Tuber as Related to Postharvest Hardness

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    Usually, parenchyma cell walls of monocotyledons do not develop secondary walls; however a few days after harvesting, the yam tuber of Dioscorea dumetorum starts to harden. Two or three weeks Iater, hardness is so pronounced that the tubers cannot be eaten, even after a long cooking time. Cytochemical studies using autofluorescence or some fluorescent dyes, such as phloroglucinol hydrochloride showed that the thin, and flexible cell walls of parenchyma tubers very quickly became fully lignified after harvesting. Ultrastructura 1 stud ies of the hardened ce 11 wa 11 s showed very thick secondary wa 11 s and very deep pit apertures. These secondary walls reacted strong ly with li gn in reactants such as potassium permanganate. The use of a radioactive (l \u27• C) ce llulose precursor, uri dine- 5\u27-d ipho sphateglucose, confirmed the formation of such secondary walls. The lignification started from the corners of the cells around intercellular spaces and proceeded along the walls

    Pengaruh Hambatan Samping Terhadap Kinerja Pada Ruas Jalan Panjaitan (Kelenteng Ban Hing Kiong) Dengan Menggunakan Metode Mkji 1997

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    Jalan merupakan prasarana transportasi darat yang memegang peranan penting dalam sektor perhubungan darat, dalam kehidupan masyarakat modern dengan berkembangnya teknologi, pertumbuhan ekonomi dan jumlah penduduk mengakibatkan banyaknya aktivitas kegiatan yang dilakukan, sedangkan kapasitas dan kinerja jalan yang menampung arus kendaraan, semakin terbatas. Pada kondisi ini sering menimbulkan kemacetan. Kinerja arus lalu lintas di daerah komersial menjadi berkurang, karena disebabkan oleh berbagai faktor yang terjadi pada sisi jalan. Salah satu faktor yang menyebabkan hal tersebut adalah aktifitas pada sisi jalan atau hambatan samping berupa kendaraan keluar masuk, penyeberang jalan, dan kendaraan lambat. Jalan Panjaitan khususnya depan kelenteng Ban Hing Kiong dipilih sebagai lokasi penelitian karena pada ruas jalan ini sering terjadi kemacetan yang diakibatkan oleh tingginya aktifitas sisi jalan berupa banyaknya kendaraan yang berhenti yang menaikkan dan menurunkan penumpang, parkir di badan jalan, penyeberang jalan, kendaraan tidak bermotor, kendaraan yang keluar masuk sisi jalan, yang mempengaruhi arus lalu lintas, kecepatan, kapasitas. Penelitian dilakukan selama 4 hari, yaitu pada hari Senin, Rabu, Jumat, dan Sabtu. Pengambilan data secara langsung dilapangan, untuk volume lalu lintas, kecepatan kendaraan dan data hambatan samping dibagi per 15 menit. Selanjutnya dilakukan analisa data yang dibagi dalam dua bagian yaitu volume lalu lintas, kecepatan, dan kapasitas jalan menggunakan Manual Kapasitas Jalan Indonesia (MKJI) Tahun 1997. Sedangkan untuk pengaruh hambatan samping terhadap kecepatan arus lalu lintas, dianalisa menggunakan regresi berganda dengan bantuan Microsoft Excel dengan cara menghilangkan salah satu faktor hambatan samping untuk mengetahui seberapa besar kontribusi masing-masing faktor hambatan samping terhadap kinerja arus lalu lintas. Hasil penelitian ini menunjukkan bahwa tingginya aktifitas sisi jalan atau hambatan samping cukup berpengaruh terhadap tingkat kinerja arus lalu lintas. Faktor hambatan samping yang sangat berpengaruh terhadap kecepatan arus lalu lintas adalah faktor kendaraan lambat 12.1 %, faktor penyeberang jalan 7.6 %, faktor kendaraan masuk dan keluar 5.5 %, faktor kendaraan berhenti 4.3 %, Selain itu diperoleh nilai kapasitas sebesar 1330.06 smp/jam, dengan derajat kejenuhan (DS) sebesar 0.986, Koefisien Determinasi (r) yang diperoleh dari hasil analisis yaitu sebesar 0.868, hal ini menunjukkan bahwa 86.8 % Perubahan variabel kendaraan keluar dan masuk penelitian, kendaraan berhenti, penyeberang jalan, dan kendaraan lambat secara bersama-sama mempengaruhi kecepatan arus lalu lintas

    Parallel and sequential approximation of shortest superstrings

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    Men-centered approaches for primary and secondary prevention of HIV/ AIDS: A scoping review of effective interventions

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    Approximately 65,000 people live with HIV/AIDS (PLWHA) in Canada and around 82% of declared cases (52,932 cases) of HIV and AIDS are men. Without evidence-based specific interventions, HIV will continue to spread. This scoping review aims to identify evidence on best practice programs for sexual and reproductive health promotion (i.e. HIV/AIDS) targeting men, and to document the best channels for reaching men. English and French language literature indexed in relevant electronic databases was systematically searched. This was complemented by a manual search through five periodicals specializing in men's health. A total of 6608 articles were identified and 39 articles that met all inclusion and exclusion criteria were retained in the synthesis. Three reviewers independently extracted information on: health topic (i.e. HIV/AIDS), design of services (structure and resources), modes of delivery, content of intervention and main outcomes. The preventive practices with the strongest supportive evidence included, just in time information available through electronic channels (website or cell phone). Interventions designed for men only, showed significantly greater effectiveness compared to interventions targeting both men and women. We derived practical recommendations to design an integrated evidence-based preventive intervention targeting men. © 2013 Jbilou J, et al

    Highly charged ions in Penning traps, a new tool for resolving low lying isomeric states

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    The use of highly charged ions increases the precision and resolving power, in particular for short-lived species produced at on-line radio-isotope beam facilities, achievable with Penning trap mass spectrometers. This increase in resolving power provides a new and unique access to resolving low-lying long-lived (T1/2>50T_{1/2} > 50 ms) nuclear isomers. Recently, the 111.19(22)111.19(22) keV (determined from γ\gamma-ray spectroscopy) isomeric state in 78^{78}Rb has been resolved from the ground state, in a charge state of q=8+q=8+ with the TITAN Penning trap at the TRIUMF-ISAC facility. The excitation energy of the isomer was measured to be 108.7(6.4)108.7(6.4) keV above the ground state. The extracted masses for both the ground and isomeric states, and their difference, agree with the AME2003 and Nuclear Data Sheet values. This proof of principle measurement demonstrates the feasibility of using Penning trap mass spectrometers coupled to charge breeders to study nuclear isomers and opens a new route for isomer searches.Comment: 8 pages, 6 figure

    Serum 25-Hydroxyvitamin D and Intact Parathyroid Hormone Influence Muscle Outcomes in Children and Adolescents

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    Increases in 25-hydroxyvitamin D concentrations are shown to improve strength in adults; however, data in pediatric populations are scant and equivocal. In this ancillary study of a larger-scale, multi-sited, double-blind, randomized, placebo-controlled vitamin D intervention in US children and adolescents, we examined the associations between changes in vitamin D metabolites and changes in muscle mass, strength, and composition after 12 weeks of vitamin D3 supplementation. Healthy male and female, black and white children and adolescents between the ages of 9 and 13 years from two US states (Georgia 34°N and Indiana 40°N) were enrolled in the study and randomly assigned to receive an oral vitamin D3 dose of 0, 400, 1000, 2000, or 4000 IU/d for 12 weeks between the winter months of 2009 to 2011 (N = 324). Analyses of covariance, partial correlations, and regression analyses of baseline and 12-week changes (post-baseline) in vitamin D metabolites (serum 25(OH)D, 1,25(OH)2 D, intact parathyroid hormone [iPTH]), and outcomes of muscle mass, strength, and composition (total body fat-free soft tissue [FFST], handgrip strength, forearm and calf muscle cross-sectional area [MCSA], muscle density, and intermuscular adipose tissue [IMAT]) were assessed. Serum 25(OH)D and 1,25(OH)2 D, but not iPTH, increased over time, as did fat mass, FFST, forearm and calf MCSA, forearm IMAT, and handgrip strength (p < 0.05). Vitamin D metabolites were not associated with muscle strength at baseline nor after the 12-week intervention. Changes in serum 25(OH)D correlated with decreases in forearm IMAT, whereas changes in serum iPTH predicted increases in forearm and calf MCSA and IMAT (p < 0.05). Overall, increases in 25(OH)D did not influence muscle mass or strength in vitamin D-sufficient children and adolescents; however, the role of iPTH on muscle composition in this population is unknown and warrants further investigation
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