196,044 research outputs found
Calathiscus Claereboudt & Al-Amri, 2004, new genus
No full textCalathiscus new genus Type species: Calathiscus tantillus Diagnosis: see under only known species, Calathiscus tantillus Calathiscus tantillus new species (Figs. 1 – 6). Material examined Holotype: Sultan Qaboos University, SQU040001, Cemetery Bay Pillar Rock, 8m, Muscat (Oman). Collector: Michel Claereboudt. The holotype consists of a whole colony (1. 7 x 3.4 cm) (Fig. 1, 4). Paratypes: 1 Florida Museum of Natural History, UF 535, Masirah Island, 3–4 m (Oman). Collector: Gustav Paulay (Fig. 2,A). 2 Institut Royal des Sciences Naturelles de Belgique, IG 30190, Cemetery Bay, Muscat, 6 m. Collector: Michel Claereboudt (Fig. 2 B). Diagnosis Corallites are 1.7 mm in diameter with calices small, rarely exceeding 1.5 mm There are two complete and one incomplete, variable, cycles of septa (6 + 6 + 3—10). A columella is absent. Living colonies have large polyps, with an elongated column and lanceolate tentacles that are normally extended during the day. Tentacles vary in number from 15 to 22 corresponding to the number of septa. Previous records This species has not been previously recorded. Description Colonies are encrusting or hemispherical, very small, rarely more than 30 mm across. Corallites are rounded and very small (1.7 mm in diameter on average) with calices rarely exceeding 1.5 mm. The wall is thin and consists of rows of irregular, granulated denticles that correspond to septal insertions, and are connected with synapticular links leaving few pores between adjacent corallites, particularly in lightly calcified colonies from deeper water. Calices are shallow. Septa form 2 subequal cycles with a third cycle expressed to varying degrees in different corallites and colonies. Only the first 2 cycles are complete, and show an irregular pattern of septal fusion. There are between 15 and 22 septa, some reduced to a single row of denticles along the corallite wall. A ventral trident (or triplet) is present in some calices and defines with a dorsal septum an axis of bilateral symmetry. The lateral septa do not form regular pairs as in Porites, but are occasionally fused. In most specimens, a single synapticular ring is clearly visible surrounding a central fossa in which there is no columella. Pali formed by large granulated denticles are present on the margin of 6 septa although in some lightly calcified specimens, the pali are poorly defined. There is an additional denticle on some septa between wall and palus. Living colonies have large polyps, with an elongated column and lanceolate tentacles, that are normally extended during the day. All observed colonies were light green with radiating brown marks on the oral cones and a darker ring on the tentacles. Tentacles vary in number from 15 to 22 and correspond to the septal arrangement. Colonies are very sensitive to even slight changes in water pressure or movement and respond readily to the slightest disturbance by retracting the polyps. Remarks The series of corallites studied showed considerable variation in the development of the various skeletal features, particularly the number of septa and size of the pali. The number of septa varied from 15 to 22. The development of a ring of synapticulae linking the septa in the center of the corallites and the fusion patterns of the septa (ventral triplets and lateral pairs) was also variable. The appearance of the living polyps on the other hand was very stable, and the species was readily identifiable underwater by its color, number of tentacles and small size. Etymology Calathiscus is named after a small woven wicker basket (C alathiscus in Latin) to reflect simultaneously the “porous” and delicate nature of the calices of this genus and the small size of the colonies. Gender masculine. The specific epithet tantillus, literally “ever so small” in Latin, was chosen to suggest the small size of the calices and the colonies of this species. Habitat and distribution All colonies were found attached to hard substrate: fragments of coral skeleton, large flagstone of limestone and Ophiolite bedrock. Colonies of Calathiscus tantillus have been found in several reef communities between 4 and 22 m in depth in mixed communities dominated by several species of Cyphastrea, Leptastrea, Favites and small colonies of Porites and Goniopora. In the Gulf of Oman, these depths correspond to the lower part of the reefs, as reefs rarely extend below 12– 15 m. The species has been found in communities established on ancient limestone but also, more commonly, in coral communities growing directly on ophiolite. Although never common and always cryptic, colonies of Calathiscus tantillus can be relatively abundant but never exceed 2 or 3 cm 2 in size. Some specimens observed at the deepest location (Fahl Island, 22 m) where partially discolored with the disk and tentacles taking brownpurple color. Calathiscus tantillus was observed in most coral rich communities in the Muscat Area (Daymaniyat Islands, Cemetery Bay, Bandar Khayran) and one specimen (Paratype 2, FLMNH UF 535) was collected in the Arabian Sea near the Island of Masirah (20 º0’ 40 ”N, 58 º 38 ’0”E). Discussion Calathiscus tantillus is easy to differentiate from species of Porites by the large size of its extended polyps and the lighter, more porous structure of its skeleton. The new species is distinguished from Goniopora by the small size of the calices (almost 1 / 2 the diameter found in species with small corallites such as G. tenuidens Quelch, 1886, G. eclipsensis Veron and Pichon, 1982, and G. minor Crossland, 1952), fewer septa, as well as by the fusion patterns of the septa and the arrangement of pali and denticles: particularly the presence of a ventral triplet in many well calcified colonies and the pali present only on the first cycle of septa. Although fully extended polyps with long columns are also found in other poritids, the number of tentacles (15–22) in this species separates it from Goniopora which has 24 tentacles and Alveopora which has only 12 (Veron 2000). The mixture of characteristics from Porites and Goniopora found in the present series of specimens confirms its affinities with the Poritidae: Goniopora, Porites, Stylaraea and to a lesser extent Alveopora. The most complex calicular structures in the Poritidae are found in Goniopora and Poritipora (Veron 2002) with 3 cycles of septa present in most species (Veron and Pichon 1982). Stylaraea, Porites and Alveopora have only two cycles of septa (Veron 2000). Bernard (1903) argued for a complete separation of Alveopora from the Poritidae, and although morphologically there were few arguments against the idea that Alveopora is derived from Goniopora by a further reduction of complexity and development of the skeletal features (Veron and Pichon 1982), recent genetic studies have shown that Alveopora may be more closely related to acroporids than to other Poritidae (Romano and Cairns 2000). The reduction in the number of septa is also visible in the polyp number of tentacles: 24 in Goniopora, and Poritipora (Veron 2002), typically 15–22 in Calathiscus and 12 in Alveopora, Stylaraea and Porites. Several species of Poritidae are also characterized by very small colonies. The largest colonies of Stylaraea for instance are only a few cm across and several small Porites not exceeding a few cm in diameter are being described (J.E.N. Veron, Pers. Comm.).Published as part of Claereboudt, Michel R. & Al-Amri, Issa S., 2004, coral (Scleractinia, Poritidae) from the Gulf of Oman, pp. 1-8 in Zootaxa 532 on pages 2-8, DOI: 10.5281/zenodo.15752
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
Intern experience at CH���M Hill, Inc.: an internship report
No full textIncludes author's vita"Submitted to the College of Engineering of Texas A&M University in partial
fulfillment of the requirement for the degree of Doctor of Engineering."Includes bibliographical referencesA review of the author's internship experience with CH���M HILL, Inc.
during the period September 1975 through May 1976 is presented. During this nine month
internship the author worked as an Engineer II in the Industrial Processes discipline of this
large consulting engineering firm... The author's prime responsibility was as one of three
lead design engineers on the design of a large wastewater treatment facility for a pulp mill
in Hoquiam, Washington owned by ITT Rayonier Inc. The work generally consisted of the design
of individual treatment units and associated piping and pumping. The purpose of the project
was to provide wastewater treatment capabilities that would satisfy the effluent limitations
(standards) imposed upon the mill by the State of Washington Department of Ecology and the
U.S. Environmental Protection Agency. The author's assignment also entailed necessary
interaction with the project manager and other CH���M HILL design engineers and support staff
members, the client's representatives, and representatives of two other consulting engineering
firms working on the project. Thus, the internship position at CH���M HILL provided considerable
experience coordinating the author's work with the work of other engineers, guiding the design
and administrative efforts of a support staff, and interacting regularly with the client and
other consulting firms. This broad exposure to a variety of engineering and organizational
problems provided a valuable educational experience
Transition to turbulence in a qblique shock-wave/boundary-layer interaction at M=15
No full textDirect numerical simulations are carried out for different forcing techniques to trigger transition during the interaction between an oblique shock-wave and a laminar boundary-layer at M = 1.5. Three forcing methods are used: a) forcing of oblique unstable modes, whose shape and behaviour are determined by the local linear stability theory, b) broadband free-stream acoustic disturbances, and c) a cold plasma flow control device. While the oblique-mode breakdown is dominant for low-amplitude forcing, long streaky structures drive the transition process in a high-amplitude disturbance environment. LES are also performed on the experimental setup by the Institute of Theoretical and Applied Mechanics (ITAM) from Novosibirsk State University with cold plasma actuation. As well as the disturbance type, the effect of Reynolds number and forcing amplitude will be investigated
Letter from Cedrick M. Shimo to the Office of Redress Administration, June 4, 1991
No full textA letter from Cedrick M. Shimo to the Office of Redress Administration arguing that John Y. Udaka is entitled to a redress payment.These materials are from box 73 and 74 of the Frank Chin Papers. The Frank Chin Papers contain personal and professional correspondence between Frank Chin and Michi Weglyn relating to particular projects on which either author was working as well as files related to the Day of Remembrance Tribute to Michi Weglyn
The construction of Karen Karnak: The multi-author-function
No full textThis thesis is situated within the comparatively recent developments of Web 2.0 and the emergence of interactive WikiMedia, and explores the mode of authorship within a Read/Write culture compared to that of a Read/Only tradition. The hypothesis of this study is that the role of the audience has become merged with the author, and as such, represents new functions and attributes, distinct from a more conventional concept of authorship, in which the roles of audience and author are more separate. Read/Write and participatory culture, as defined by this study, is focused on collaboration, and includes the influences of D.I.Y. culture, Open-Source practices and the production of text by multiple authors. Multi-authorship presents a re-thinking of several concepts which support the notion of the individual author, since the focus of multi-authorship is not on attribution and ownership of a finished text, but on the continued malleability of a text. Modes of multi-authorship, demonstrated in the use of the pseudonyms Alan Smithee and Karen Eliot, represent declarative authors whose names signify multiple origins, whilst concurrently indicating a distinct body of work. The function of these names form an important context to this study, since primary research involves the construction of an experimental mode of multi-authorship utilising WikiMedia technology and the interaction of thirty nine participants, who are invited to create a body of work under the collective pseudonym Karen Karnak. The data generated by this experiment is analysed using aspects of Michel Foucault's author-function to identify and determine power structures inherent in the WikiMedia context. The interplay of power structures, including concepts such as identity, ownership and the body of work, affect the resulting mode of authorship and contribute to the construction of Karen Karnak, suggesting further areas of research into the emerging multi-author
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