70 research outputs found

    Crossing the Rubicon: Introducing fully online courses into the curriculum of a traditional liberal arts college

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    This interactive session will describe the experience of introducing fully online courses into the curriculum of DeSales University, a small, traditional, primarily residential, liberal arts college. The initiative was undertaken in order to meet a university strategic objective that all traditional day students have the opportunity to take up to two online courses as part of their undergraduate degree program. Attendees will be encouraged to share their own experiences, plans, concerns, and successes. The session will cover: Why the project was undertaken How the challenges involved with recruiting full-time faculty to participate in the project, including how intellectual property concerns, were addressed The thought process behind designing full semester length online courses specifically for the traditional-age student population Why students enrolled in the courses What it’s been like to design and teach the courses from the faculty perspective How the students are performing in the courses relative to traditional format courses DeSales University has offered online courses to nontraditional and graduate students for many years. However, traditional day students were prohibited from taking online classes on the theory that “parents didn’t send their sons and daughters to a private residential college so they could take online classes from their dorm rooms.” Learn what turned the tide in favor of online courses. Reconsider whether introducing online courses at your institution will add or detract from students’ overall experience. The panel includes Dr. Brennan Pursell, a History professor in the role of course developer and instructor; Christopher Hewatt, the instructional designer paired with Dr. Pursell; and Dr. Eric Hagan, director of the university’s instructional technology department

    Oyster Mortality Studies In Virginia. II. The Fungus Disease Caused By Dermocystidium Marinum In Oysters Of Chesapeake Bay

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    A high death rate of oysters in Virginia waters during the warm months of summer and fall was reported by Hewatt & Andrews (1954b). One of the most important causes of this warm-season mortality is the fungus Dermocystidium marinum, a pathogen discovered in the Gulf of Mexico by Mackin, Owen & Collier (1950). The fungus is found along the coast of the Western Atlantic from Delaware Bay to Florida and on the coast of the Gulf of Mexico from Florida to Texas. In Chesapeake Bay the disease was studied for pathogenicity to oysters, seasonal occurrence, distribution, and its effect on the oyster industry. Over 3000 dead or dying oysters and 7000 live oysters were examined. Most of the dead or dying oysters were obtained from trays suspended in the York River at Gloucester Point, Virginia, but the live oysters came from many localities in Chesapeake Bay

    Temperature Control Experiments on the Fungus Disease, Dermocystidium marinum, of Oysters

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    In 1950 Mackin, Owen, and Collier described a fungus parasite, Dermocystidium marinim, found in oysters of Louisiana coastal waters. Since that, time numerous studies have been conducted on the nature of the fungus and its effects upon the host. It has been definitely established that the pathogen is the main contributor to the causes of mortality of oysters in some areas. Ray and Chandler (1955) have adequately reviewed the literature on the subject. Among the various observations that have been made on the fungus disease there is very positive evidence that the incidence and intensity of the infection are primarily controlled by the temperature of the water. Mackin (1953) found that mortality rates and intensity of the infection were greatly depressed during the winter months in Barataria Bay, Louisiana. Hewatt and Andrews (1953) reported a high mortality period extending from June through October in the lower York River, Virginia., Ray and Chandler (1955) stated that temperatures exceeding 20°c. favor the development of Dermocystidium marinum in waters of the Gulf of Mexico. During the summer of 1954 we conducted a series of experiments in an effort to determine the effects of relatively low and high temperatures on the development of the fungus disease. Oysters were collected from two different sources. One group of oysters, estimated to be three years of age, was collected from Wreck Shoal of the James River, where no evidence of the fungus has been found. This group \u27Will be referred to as the Nonendemic Oysters & The other group of oysters came from the Rappahannock River, where fungus infections have been found. This group will be designated Endemic Oysters .

    Crossing the Rubicon: Introducing fully online courses into the curriculum of a traditional liberal arts college

    Get PDF
    This interactive session will describe the experience of introducing fully online courses into the curriculum of DeSales University, a small, traditional, primarily residential, liberal arts college. The initiative was undertaken in order to meet a university strategic objective that all traditional day students have the opportunity to take up to two online courses as part of their undergraduate degree program. Attendees will be encouraged to share their own experiences, plans, concerns, and successes. The session will cover: Why the project was undertaken How the challenges involved with recruiting full-time faculty to participate in the project, including how intellectual property concerns, were addressed The thought process behind designing full semester length online courses specifically for the traditional-age student population Why students enrolled in the courses What it’s been like to design and teach the courses from the faculty perspective How the students are performing in the courses relative to traditional format courses DeSales University has offered online courses to nontraditional and graduate students for many years. However, traditional day students were prohibited from taking online classes on the theory that “parents didn’t send their sons and daughters to a private residential college so they could take online classes from their dorm rooms.” Learn what turned the tide in favor of online courses. Reconsider whether introducing online courses at your institution will add or detract from students’ overall experience. The panel includes Dr. Brennan Pursell, a History professor in the role of course developer and instructor; Christopher Hewatt, the instructional designer paired with Dr. Pursell; and Dr. Eric Hagan, director of the university’s instructional technology department

    Cavity Modes Study in Hyperuniform Disordered Photonic Bandgap Materials

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    We introduce novel architecture for cavity design in an isotropic disordered photonic band gap material. We demonstrate that point-like defects can support localized modes with different symmetries and multiple resonant frequencies, useful for various applications

    s and d-wave symmetries of the solutions of the Eliashberg equations

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    We examine the different possible symmetries of the superconducting gap obtained by solving the Eliashberg equations. We consider an electron-phonon interaction in a strong coupling scenario. The Coulomb pseudopotential plays the crucial role of providing the repulsion needed to favour the d-wave symmetry. But the key parameter that allows very anisotropic solutions even with very strong coupling is the small angular range of the interaction due to predominantly electron-phonon forward scattering that is found in the high-Tc superconductors. We find both s and d-wave solutions whose stability depends mainly on the angular range of the interaction.Comment: Uuencoded LaTeX file anf 6 Postscript figures (14 pages). Accepted for publication in Physica

    New polychaetous annelids from Texas

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    3 p. : ill. ; 24 cm
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