3,363 research outputs found

    Using plagiarism feedback as assessment for learning to socialise students into disciplinary writing: A theoretical perspective

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    Plagiarism is an increasingly common offense at some South African institutions of higher learning. The plagiarism range of assessment tasks escalated during the last two decades, as a result of the changing student body that has entered universities after 1994. To address this problem, universities have implemented different electronic plagiarism detection programmes such as Turnitin and Safe Assign that can identify similarities in paragraphs of texts from different documents. The problem is that students are not being trained on how to interpret the results provided by these plagiarism detection programmes. Presently, feedback from plagiarism detection programmes is not being utilised as a self-assessment learning tool but instead is used as a discipline measure to penalise students. Given this gap, this theoretical article argues that the feedback from plagiarism programmes should be used by lecturing staff to teach students about citing and making knowledge claims to socialise them into the literacy of the discipline. This article draws from Knight’s (2001) and Chew, Lin Ding, and Rowell (2015) model on assessment for learning, which argues that feedback on assessment tasks should be used to improve students’ writing to avoid plagiarism. This emphasised the need for a standardised “Turnitin policy” be in place at institutions to enable a continuous learning experience for all students across the institution. The article concludes the critical role of lecturers to socialise students into the discourse community, by making explicit the rules of the discipline through assessment, resulting in students not being tempted to plagiarise

    Humidity Control in Seed Storage

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    A Gentlement\u27s Agreement: Assessing the GNU General Public License and its Adaptation to Linux

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    Crafting Military Commissions Post-Hamdan: The Military Commissions Act of 2006

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    In June 2006, the Supreme Court invalidated President Bush\u27s military commission rules in Hamdan v. Rumsfeld. The Court held that the military commissions fell outside of the military court system established by Congress, and ruled the commissions unconstitutional as applied to both citizens and non-citizens. Congress responded with the Military Commissions Act of 2006 ( the Act ), new legislation to establish military commissions. The Act fails to balance properly the Court\u27s fairness requirements with the extraordinary demands placed on the laws of war by terrorism. This Note summarizes whether terrorist attacks implicate the laws of war, what protections are due parties detained in the War on Terror, and concludes that only the laws applicable to non-international armed conflicts govern Al Qaeda \u27s attacks. After examining Justice Kennedy\u27s safe harbor in his Hamdan concurrence, the Note considers the procedures of the Military Commissions Act of 2006. In light of the Court\u27s decision in Hamdan, as well as the provisions of the Geneva Conventions that it incorporates, the Military Commissions Act fails to uphold the fairness standards expressed by the Court. The Act would require significant revisions before it could withstand constitutional scrutiny, even in wartime

    Study of the system of middle atmosphere-ionosphere using remote-sensing data

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    In the present investigation, the methods of statistical spectral analysis are employed for a study of the quasi-periodic changes of state parameters of the middle atmosphere and the ionosphere, taking into account oscillations with periods of several days. The considered oscillations are typical for planetary waves. The theory and empirical findings regarding transient planetary waves are utilized as a basis for the concepts employed in the data analysis and for the interpretation of the results. The results of the investigation show a presence of coherent variations in the time series of radiation density measurements and other state parameters for the middle atmosphere and the ionosphere. The existence of presumably dynamic coupling processes can be recognized in oscillations with periods of about 16 or 5 days

    Few layer graphene on SiC, pyrolitic graphite and graphene: a Raman scattering study

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    The results of micro-Raman scattering measurements performed on three different ``graphitic'' materials: micro-structured disks of highly oriented pyrolytic graphite, graphene multi-layers thermally decomposed from carbon terminated surface of 4H-SiC and an exfoliated graphene monolayer are presented. Despite its multi-layer character, most parts of the surface of the graphitized SiC substrates shows a single-component, Lorentzian shape, double resonance Raman feature in striking similarity to the case of a single graphene monolayer. Our observation suggests a very weak electronic coupling between graphitic layers on the SiC surface, which therefore can be considered to be graphene multi-layers with a simple (Dirac-like) band structure.Comment: 4 pages, 3 Figures Structure of the paper strongly modified, small changes in Fig 2 and 3. Same interpretation and same result

    Specific Rab GTPase-activating proteins define the Shiga toxin and epidermal growth factor uptake pathways

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    Rab family guanosine triphosphatases (GTPases) together with their regulators define specific pathways of membrane traffic within eukaryotic cells. In this study, we have investigated which Rab GTPase-activating proteins (GAPs) can interfere with the trafficking of Shiga toxin from the cell surface to the Golgi apparatus and studied transport of the epidermal growth factor (EGF) from the cell surface to endosomes. This screen identifies 6 (EVI5, RN-tre/USP6NL, TBC1D10A–C, and TBC1D17) of 39 predicted human Rab GAPs as specific regulators of Shiga toxin but not EGF uptake. We show that Rab43 is the target of RN-tre and is required for Shiga toxin uptake. In contrast, RabGAP-5, a Rab5 GAP, was unique among the GAPs tested and reduced the uptake of EGF but not Shiga toxin. These results suggest that Shiga toxin trafficking to the Golgi is a multistep process controlled by several Rab GAPs and their target Rabs and that this process is discrete from ligand-induced EGF receptor trafficking

    Method of Simulating Flow-Through Area of a Pressure Regulator

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    The flow-through area of a pressure regulator positioned in a branch of a simulated fluid flow network is generated. A target pressure is defined downstream of the pressure regulator. A projected flow-through area is generated as a non-linear function of (i) target pressure, (ii) flow-through area of the pressure regulator for a current time step and a previous time step, and (iii) pressure at the downstream location for the current time step and previous time step. A simulated flow-through area for the next time step is generated as a sum of (i) flow-through area for the current time step, and (ii) a difference between the projected flow-through area and the flow-through area for the current time step multiplied by a user-defined rate control parameter. These steps are repeated for a sequence of time steps until the pressure at the downstream location is approximately equal to the target pressure
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