323 research outputs found

    A Study on Buckling Response of FML Members of ‘Classical’ Versus Thin-Ply Design

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    The paper is devoted to the buckling response and load carrying capacity of thin-walled open cross-section profiles made of hybrid, multi-layered materials; specifically Fiber Metal Laminates (FML) subjected to static compression loading. The objective of the study is a comparison of ‘classical’ Fibre Reinforced Plastic (FRP) layers versus thin-ply technology design. Analytical, finite element method and experimental investigations are performed to investigate different material combinations and sub-laminate tailoring strategies. These are compared with more common FML designs for thin-walled columns and rectangular plates

    Efektivitas Penerapan Model Pembelajaran Student Fasilitator And Explaining Menggunakan Media Concept Map terhadap Peningkatan Pemahaman Konsep

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    Penelitian ini bertujuan (1) Untuk mengetahui gambaran peningkatan pemahaman konsep siswa kelasX SMA Negeri 1 Walenrang yang diajar menggunakan model pembelajaran Student Fasilitator andExplaining (2) Untuk mengetahui gambaran peningkatan pemahaman konsep siswa kelas X SMANegeri 1 Walenrang yang diajar tanpa menggunakan model student fasilitator and explaining (3)Untuk mengetahui model pembelajaran Student Fasilitator and Explaining efektif untukmeningkatkan pemahaman konsep fisika siswa dari pada siswa yang tidak diajar dengan modelpembelajaran Student Fasilitator and Explaining kelas X SMA Negeri 1 Walenrang. Penelitian inimerupakan jenis penelitian Quasi Experimental Design dengan menggunakan desain penelitian pretestposttestcontrol group design. Teknik analisis yang digunakan adalah analisis statistik deskriptif dananalisis statistik inferensial. Berdasarkan hasil analisis statistik inferensial diperoleh Dhitung = 0,56 , dapat disimpulkan bahwapenerapan Model pembelajaran Student Fasilitator and Explaining dengan Menggunakan MediaConcept Map efektif untuk meningkatkan pemahaman konsep fisika siswa daripada siswa yang tidakdiajar dengan model pembelajaran Student Fasilitator and Explaining dengan Menggunakan MediaConcept Siswa Kelas X SMAN 1 Walenran

    Operational stability of immobilised lipase/acyltransferase during interesterification of fat blends

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    The lipase/acyltransferase from Candida parapsilosis is an unusual enzyme that preferably catalyses alcoholysis over hydrolysis in biphasic aqueous/organic media. The aim of this study was to evaluate the operational stability of an immobilised form of this enzyme during the interesterification of fat blends containing n-3 polyunsaturated fatty acids, in solvent-free media, at 60 7C, carried out continuously and batchwise. When the interesterification was performed in a continuous fluidised-bed reactor, an operational half-life of 9 h was estimated. The biocatalyst was also reused in consecutive 23-h batches, in a total of four batches, either using fresh medium with no water addition or adding water to rehydrate the biocatalyst. When no water and extra water was added to the reaction medium, the obtained half-lives were 10 and 18 h, respectively. Thus, the loss of activity may be explained by a progressive dehydration occurring along the reaction rather than by product or substrate inhibition effects. The interesterification activity was accompanied by changes in the acylglycerol profile. An increase in compounds of low equivalent carbon number (ECN) and in triacylglycerols (TAG) of ECN 42 and 44 was observed. This increase was accompanied by the consumption of TAG of ECN 46, 48 and 5

    Group status drives majority and minority integration preferences

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    WOS:000300955100009 (Nº de Acesso Web of Science)“Prémio Científico ISCTE-IUL 2013”This research examined preferences for national-and campus-level assimilative and pluralistic policies among Black and White students under different contexts, as majority-and minority-group members. We targeted attitudes at two universities, one where 85% of the student body is White, and another where 76% of students are Black. The results revealed that when a group constituted the majority, its members generally preferred assimilationist policies, and when a group constituted the minority, its members generally preferred pluralistic policies. The results support a functional perspective: Both majority and minority groups seek to protect and enhance their collective identities

    On the monotone stability approach to BSDEs with jumps: Extensions, concrete criteria and examples

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    We show a concise extension of the monotone stability approach to backward stochastic differential equations (BSDEs) that are jointly driven by a Brownian motion and a random measure for jumps, which could be of infinite activity with a non-deterministic and time inhomogeneous compensator. The BSDE generator function can be non convex and needs not to satisfy global Lipschitz conditions in the jump integrand. We contribute concrete criteria, that are easy to verify, for results on existence and uniqueness of bounded solutions to BSDEs with jumps, and on comparison and a-priori LL^{\infty}-bounds. Several examples and counter examples are discussed to shed light on the scope and applicability of different assumptions, and we provide an overview of major applications in finance and optimal control.Comment: 28 pages. Added DOI https://link.springer.com/chapter/10.1007%2F978-3-030-22285-7_1 for final publication, corrected typo (missing gamma) in example 4.1
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