438 research outputs found

    High school mathematics teachers’ competence on the contents of a quantitative research paper

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    Competence in research is an attractive feature that should be established for all practitioners because specialists with training and expertise in research will recognize strategic thinking, interpretation, and synthesizing more easily. Hence, this study aimed to describe the knowledge competency among junior high school mathematics teachers on the research processes applied on the contents of the various sections of a quantitative research paper. The descriptive method of research has been used to characterize the knowledge competence of 108 junior high school teachers on the research processes. The study used the research skill test, which was a researcher-made instrument, consisting of 50 multiple choice items with four choices each. The instrument went through the process of validity and reliability analysis obtaining a good result of 0.81. This study revealed that they were “novice” or had achieved the learning level of competency on the research processes applied on the contents of the different parts of a quantitative research paper. More so, they identified that interpretation of statistical results was a challenging part of doing a research paper

    A Strategic Analysis for the Creation of a Global MBA in Technology Management

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    In a time where globalization and technology are shaping the future of management education, the faculty of business at Simon Fraser University has engaged in talks with the Grenoble Graduate School of Business (GGSB) to create a joint MBA degree. The intent of this partnership is to leverage SFU\u27s experience in technology management and international business training with Grenoble\u27s strengths in implementing international business education in order to create a major destination program for both institutions. The viability of entering such a partnership with Grenoble to develop a Global Management of Technology MBA program is examined here

    Better than bench top. High speed antioxidant screening via the cupric reducing antioxidant capacity reagent and reaction flow chromatography

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    This study is based upon a recently established method for quantification of the antioxidant capacity of natural samples via a HPLC separation and a hyphenated selective detection (post-column derivatization with cupric reducing antioxidant capacity reagent) technique. This protocol demonstrated the main improvements to transform the quantitative protocol into a high-speed qualitative automated assay to screen samples for their potential total antioxidant capacity, typically performed via manual mixing of the sample and derivatisation and measured on a 96 well plate reader/bench top UV–Vis spectrophotometer. This approach with automated mixing is a more informative alternative for total antioxidant capacity as the antioxidant peaks are profiled for each sample within four minutes. This antioxidant profile may be used for routine analysis of raw materials and/or a guide for targeted approaches for structure elucidation for laboratories interested in early drug discovery, natural product research and the search of alternative antioxidant additives in consumer goods/therapeutics. This technique could also be used to monitor the stability, alteration or adulteration of manufactured goods containing antioxidants.Fil: Suktham, Thirada. University of Western Sydney; AustraliaFil: Jones, Andrew. University of Western Sydney; AustraliaFil: Acquaviva, Agustín. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Departamento de Química. Grupo Cromatografía; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; ArgentinaFil: Dennis, Gary R.. University of Western Sydney; AustraliaFil: Shalliker, R. Andrew. University of Western Sydney; AustraliaFil: Soliven, Arianne. University of Western Sydney; Australia. Universidad de la República; Urugua

    Investigating STEM Senior High School Scientific Research Productivity and Selected Affecting Factors: A Mixed Triangulation Study

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    Only recently, primary education institutions in the Philippines started to embrace research, resulting in few investigations into research productivity and affecting factors. This mixed method triangulation study measures senior high school scientific research productivity and influencing factors. A total of 130 students, 68 papers, nine faculty, and ten evaluators were the participants in the study. Results showed low research productivity in the quantity and quality of papers. Results also revealed a significant relationship between student and teacher scientific research skills (SRS) and research policy to the quality of research. In conclusion, there is a need for improvement in primary education research productivity by increasing student and teacher SRS and holistically formulating a research policy

    Evaluation of 3,3′-Triazolyl Biisoquinoline N,N′-Dioxide Catalysts for Asymmetric Hydrosilylation of Hydrazones with Trichlorosilane

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    A new class of axial-chiral biisoquinoline N,N′-dioxides was evaluated as catalysts for the enantioselective hydrosilylation of acyl hydrazones with trichlorosilane. While these catalysts provided poor to moderate reactivity and enantioselectivity, this study represents the first example of the organocatalytic asymmetric reduction of acyl hydrazones. In addition, the structures and energies of two possible diastereomeric catalyst–trichlorosilane complexes (2a–HSiCl3) were analyzed using density functional theory calculations

    Comparison Between Dance-Based and Traditional Exercise on Health-Related Quality of Life: A Cross-Sectional Analysis

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    Health-related quality of life (HRQoL) includes physical health, cognitive well-being, and the presence of social support. Declines in HRQoL can result in physical impairment, social isolation, and impaired cognition. Regular exercise (EX) participation may lead to better HRQoL among older adults. Dance-oriented group fitness classes (DANCE) can provide participants with structured EX that involves high levels of coordination and social comradery. DANCE EX may be a viable alternative to traditional EX (TRAD) for the maintenance of HRQoL. PURPOSE: To determine whether participation in regular DANCE EX displays higher HRQoL in older adults when compared to those who participate in TRAD EX. METHODS: Twenty-nine older adults (age 69.8 ± 9.6 yrs; 28 females; 93.1% white) enrolled in a cross-sectional study examining those who either participated in DANCE EX or TRAD EX at the time of enrollment. All participants completed the following assessments: the Medical Outcomes Study Short Form 36 subscale for physical functioning (SF-36); the International Physical Activity Questionnaire (IPAQ); the Mini Mental State Examination (MMSE); the Duke Social Support Index (DSSI); and the Senior Fitness Test (SFT). RESULTS: A MANOVA test demonstrated a statistically significant difference in SFT scores between groups (F(2,29) = 3.11 p 0.05). Weekly MET-mins of moderate (DANCE: 2,487.7 ± 2,226.3, TRAD: 1,752.0 ± 1,734.5) and vigorous (DANCE: 2,870.8 ± 2,829.8, TRAD: 1,920.0 ± 3,301.5) physical activity did not differ between groups (p > 0.05). CONCLUSIONS: DANCE EX supported higher levels of physical health—and no effect on cognitive well-being and social support—when compared to TRAD EX. DANCE EX may be a viable form of EX to support HRQoL in older adults

    Adenomatous polyposis coli regulates radial axonal sorting and myelination in the PNS

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    The tumor suppressor protein adenomatous polyposis coli (APC) is multifunctional – it participates in the canonical Wnt/β-catenin signal transduction pathway as well as modulating cytoskeleton function. Although APC is expressed by Schwann cells, the role that it plays in these cells and in the myelination of the peripheral nervous system (PNS) is unknown. Therefore, we used the Cre-lox approach to generate a mouse model in which APC expression is specifically eliminated from Schwann cells. These mice display hindlimb weakness and impaired axonal conduction in sciatic nerves. Detailed morphological analyses revealed that APC loss delays radial axonal sorting and PNS myelination. Furthermore, APC loss delays Schwann cell differentiation in vivo, which correlates with persistent activation of the Wnt signaling pathway and results in perturbed extension of Schwann cell processes and disrupted lamellipodia formation. In addition, APC-deficient Schwann cells display a transient diminution of proliferative capacity. Our data indicate that APC is required by Schwann cells for their timely differentiation to mature, myelinating cells and plays a crucial role in radial axonal sorting and PNS myelination

    Population dynamics of rhesus macaques and associated foamy virus in Bangladesh.

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    Foamy viruses are complex retroviruses that have been shown to be transmitted from nonhuman primates to humans. In Bangladesh, infection with simian foamy virus (SFV) is ubiquitous among rhesus macaques, which come into contact with humans in diverse locations and contexts throughout the country. We analyzed microsatellite DNA from 126 macaques at six sites in Bangladesh in order to characterize geographic patterns of macaque population structure. We also included in this study 38 macaques owned by nomadic people who train them to perform for audiences. PCR was used to analyze a portion of the proviral gag gene from all SFV-positive macaques, and multiple clones were sequenced. Phylogenetic analysis was used to infer long-term patterns of viral transmission. Analyses of SFV gag gene sequences indicated that macaque populations from different areas harbor genetically distinct strains of SFV, suggesting that geographic features such as forest cover play a role in determining the dispersal of macaques and SFV. We also found evidence suggesting that humans traveling the region with performing macaques likely play a role in the translocation of macaques and SFV. Our studies found that individual animals can harbor more than one strain of SFV and that presence of more than one SFV strain is more common among older animals. Some macaques are infected with SFV that appears to be recombinant. These findings paint a more detailed picture of how geographic and sociocultural factors influence the spectrum of simian-borne retroviruses

    Better than bench top : High speed antioxidant screening via the cupric reducing antioxidant capacity reagent and reaction flow chromatography

    Get PDF
    This study is based upon a recently established method for quantification of the antioxidant capacity of natural samples via a HPLC separation and a hyphenated selective detection (post-column derivatization with cupric reducing antioxidant capacity reagent) technique. This protocol demonstrated the main improvements to transform the quantitative protocol into a high-speed qualitative automated assay to screen samples for their potential total antioxidant capacity, typically performed via manual mixing of the sample and derivatisation and measured on a 96 well plate reader/bench top UV–Vis spectrophotometer. This approach with automated mixing is a more informative alternative for total antioxidant capacity as the antioxidant peaks are profiled for each sample within four minutes. This antioxidant profile may be used for routine analysis of raw materials and/or a guide for targeted approaches for structure elucidation for laboratories interested in early drug discovery, natural product research and the search of alternative antioxidant additives in consumer goods/therapeutics. This technique could also be used to monitor the stability, alteration or adulteration of manufactured goods containing antioxidants.Laboratorio de Investigación y Desarrollo de Métodos Analíticos (LIDMA
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