722 research outputs found

    Pressure distribution on a hydrofoil running near the water surface

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    The effect of the free surface on the pressure distribution on the upper side of a shallow-running hydrofoil is considered from a general point of view. Previous theoretical and experimental work is reviewed in order to compare the range of flow variables for which each treatment of the surface proximity problem is valid. A qualitative theoretical expression for the pressure is developed. This result shows the relative importance of the pertinent parameters and it is shown to agree qualitatively with previous experiments as well as with new pressure measurements made in the Free Surface Water Tunnel. The above considerations reinforce the view generally held in the past, that the methods of potential theory when properly applied to hydrofoils at shallow submergences may be expected to lead to valid and useful results

    Demystifying Assessment: The Road To Accreditation

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    Accreditation serves as both a quality assurance and accountability mechanism for our learning institutions. It is a voluntary process of self-regulation and non-governmental peer review supported, in general, by providers of tertiary education and examines the philosophy, goals, programs, facilities, resources, and financial viability of the institution. The culture of assessment and the information it generates should be embedded effectively within all institutional systems. This would enable an organization to focus their attention on the assumptions they make with respect to student learning and to promote a culture of continuous assessment and improvement in order to elevate students quality of learning. It is through a process of programmatic assessment that evidence is gathered to support an application for accreditation to an appropriate accrediting agency. What is driving the assessment movement in higher education? How do accreditation bodies make their decisions? What is the precise basis for accreditation? For example, what filtering process does accreditation bodies use when determining what evidence is or is not relevant when arriving at the final accreditation decision. Presumably, as in courts of law, there must be some mechanism or pre-defined criteria in which evidence is weighed and an appropriate decision is reached. Unfortunately, the mechanism is poorly understood by educational institutions and faculty alike. However, the standards of almost all accreditors include the expectation that institutions clearly state student learning outcomes (SLOs) and to assess those outcomes. Although there are a variety of academic accrediting bodies their policies and approaches tend to be more alike than different and appear to share similar expectations for the assessment of SLOs. The key is the Assessment of Student Learning and it is a critical issue for students, teachers, curriculum designers, the accreditation process, quality assurance, and review of courses. How a student learns (student learning styles) and what they actually do learn (subject material) are often driven by the assessment required for a course of study. Assessment is an ongoing, continuing improvement process aimed at understanding and elevating student learning. Assessment involves: 1. Having clear, explicit and transparent expectations for both the student and the institution.2. Setting the criteria for learning at an appropriate level to demonstrate quality of learning.3. Gathering, analyzing, and reflecting on the evidence in a systematic way to determine if student learning has occurred to the depth and breadth stated.4. Using the information gathered to document, explain, and elevate student learning. The purpose of this paper is to present a roadmap to assessment that, if followed, will assist an organization in presenting themselves in the best possible light in order to gain accreditation. As methodology proceeds and ultimately provides the guiding strategy for the design and selection of methods used in the assessment process, the authors will present a methodology that will ensure that the assessment process is effective and successful. The authors will identify and analyze practices necessary to present a clear and concise body of work to an accreditation body. The authors will discuss the required elements involved in assessment in education and how to use assessment effectively as a means of maintaining both academic standards and enhancing the quality of the student learning experience

    eBay and the BlackBerry: A Media Coverage Case Study

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    This paper centers on media coverage relating to eBay and related patent system developments. In particular, it provides a quantitative comparison between media coverage of eBay and that relating to another recent patent case: the litigation between NTP, Inc. and Research in Motion, Ltd. involving the popular BlackBerry® handheld wireless communications device, and examines the extent and nature of the NTP-related coverage in light of the co-pendency of the two cases and the issues they share in common. In so doing, it facilitates consideration of the experience of news coverage consumers - including, presumably, Supreme Court Justices - while eBay was pending at the Court

    MEASUREMENT ACCURACY OF HEAD IMPACT MONITORING SENSOR IN SPORT

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    Head injury and brain trauma exposure in sport have been recognized as potential contributors to long-term neurological disorders. As a result sensors have been proposed as an impact severity monitoring tool for on-field measurement of head accelerations. The purpose of this study was to characterize the accuracy of a head impact monitoring sensor system. Peak acceleration responses from a Smart lmpact Monitor (SIM) sensor were compared against reference sensors from a Hodgson-WSU headform. The headform with SIM was impacted for 7 impact conditions and 3 inbound energies. Moderate to strong positive correlations were found between the SIM and reference sensors for all impact conditions. At higher inbound energy the SIM overestimated, suggesting that under higher risk conditions the SIM represents a conservative tool in identifying dangerous impacts

    Low Dose Histone Deacetylase Inhibitor, Depsipeptide (FR901228), Promotes Adenoviral Transduction in Human Rhabdomyosarcoma Cell Lines

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    Purpose. Transduction of rhabdomyosarcoma (RMS) cells with adenoviral vectors for in vivo and in vitro applications has been limited by the low to absent levels of coxackie and adenovirus receptor (CAR). This study investigates the potential use of low doses of a histone deacetylase inhibitor, depsipeptide (FR901228), currently in Phase II human trials, to enhance adenoviral uptake in six rhabdomyosarcoma cell lines

    IMPACT FREQUENCY VALIDATION OF HEAD IMPACT SENSOR TECHNOLOGY FOR USE IN SPORT

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    Head impact frequency has been identified as a contributing factor to long-term trauma experienced by the brain. A peak linear acceleration greater than 20g has been proposed as defining a single impact. The purpose of this study was to examine the accuracy of a single head impact sensor to identify 209 impacts under short

    Expert Discovery Protections: Comparing District Courts with the PTAB

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    Expert witness testimony can be critical in patent litigation in all forums. In Patent Trial and Appeal Board (“PTAB”) proceedings, particularly inter partes review (“IPR”) and post-grant review (“PGR”), expert testimony through declarations and depositions plays a central role in both challenging and defending patents. In district courts, live expert testimony is key to proving infringement and invalidity. Accordingly, the legal protections governing the disclosure of expert testimony in discovery in both forums are carefully proscribed, but with notable distinctions

    The Development of the Teacher as a Professional in an Alternative Teacher Education Program

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    Recruitment and retention strategies are a growing concern for Catholic educational leaders. This article offers a glimpse into the dynamics of a leading teacher recruitment effort, the Alliance for Catholic Education (ACE) sponsored by the University of Notre Dame. After surveying the first two cohorts who taught in Catholic schools through ACE, the authors uncover significant and meaningful components of this alternative teacher preparation program with a view to challenging traditional teacher education efforts and preservice requirements

    Linked Optimization-simulation Aquifer Management Model

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