196,036 research outputs found
Bicyclus maesseni Condamin
No full textBicyclus maesseni Condamin (Figs. 11–14, 27, 31) Bicyclus maesseni Condamin 1971 (Lipke Mate, Ghana) Material studied. 79 ♂ & 127 ♀. See Supplementary Table 1. Diagnosis. The male (Fig. 11) has two well defined androconial structures (apart from the normal brush in the hindwing cellular area) that set it apart from the other species in the group (Fig. 14). Just as in B. ignobilis a part of vein 1 b on the dorsal hindwing is enlarged, but in B. maesseni the enlarged part is much shorter and wider, forming a distinctive bulge close to the base of the wing. There are no long black hairs covering this structure (as found in B. ignobilis). There is also a quite distinct androconial structure located basally in space 1 b, immediately above vein 1, on the dorsal forewing. It is formed by a patch of scales being slightly lighter than the dark base colour, and the basal part of the patch is covered by a loose collection of short hairs. Both sexes (Figs. 11–12) also stand out from similar sympatric species by the heavily darkened veins crossing through the apical patch on the forewing, breaking the patch up in at least two or more separate light subunits. Distribution. West Africa between Sierra Leone and western Nigeria (Fig. 27). This species was previously thought to occur mainly in the Volta region in Ghana and in eastern Ivory Coast. However, a range of new records has recently been acquired from Liberia and Sierra Leone, as well as many more sites in Ghana, often in sympatry with B. ignobilis. Despite all of these new records B. maesseni is still the only representative of the group in the forests of the Volta region, where it can be reasonably common in the wetter areas. There is also a single specimen from Okomu in western Nigeria, collected by J. Wojtusiak in 1986 and kept in the MZUJ collections (T. Larsen & T. Pyrcz Personal Communication). We have investigated detailed photos of this specimen and it is clearly a male of B. maesseni. At first this might appear improbable, but in reality most species that are found in Volta also extend their distribution eastwards across the Dahomey gap into Western Nigeria and often further onwards to the east (Larsen 2005). This suggests that the gap opened up well after most current western rainforest species was already dispersed on both sides of its current borders. It is therefore not impossible that the Okomu specimen is a representative from a small relict population in Western Nigeria. Okomu is one of the better-surveyed parts of this area so it is surprising that no other specimens have been previously found, but B. maesseni might just be incredibly rare east of the Volta region. As most forests in western Nigeria are now lost we might not be able to ever know if the species perhaps used to be more widespread until very recently. Comments. We did not investigate the type material that is kept in MNHN, but the images in the original description (Condamin 1971) are very clear, leaving no doubt about the morphological characters defining the species.Published as part of Brattström, Oskar, Aduse-Poku, Kwaku, Collins, Steve C. & Brakefield, Paul M., 2015, Revision of the Bicyclus ignobilis species-group (Lepidoptera: Nymphalidae: Satyrinae) with descriptions of two new species, pp. 57-79 in Zootaxa 4018 (1) on pages 65-68, DOI: 10.11646/zootaxa.4018.1.3, http://zenodo.org/record/28946
Bicyclus rileyi Condamin
No full text<i>Bicyclus rileyi</i> Condamin <p>(Figs. 7–10, 29–30)</p> <p> <i>Bicyclus rileyi</i> Condamin 1961 (Bitje, Ja River, Cameroon)</p> <p> <i>Bicyclus rileyi</i> Condamin 1965a (Separate description of female neallotype)</p> <p> <b>Material studied. Type material.</b> Holotype ♂: <b>Cameroon,</b> Bitje, Ja River, (3°09’N, 13°00’E), G.L. Bates leg., BMNH (E) #997642 (BMNH). Neallotype: ♀: Same locality as holotype, iv-vi.1910, G.L. Bates leg., BMNH (E) #997643 (BMNH).</p> <p> <b>None-type material. Cameroon:</b> Dja River (3°09’N, 13°00’E): 7 ♂. Ebogo (3°23’N, 11°28’E): 7 ♂, 8 ♀. Maan (2°22’N, 10°37’E): 4 ♂, 1 ♀. Membele (2°27’N, 11°08’E): 1 ♂. Mevele (Membele?): 3 ♂. Mintom (2°42’N, 13°17’E): 1♀. Moloundou (3°09’N, 13°00’E): 1 ♀. <b>DRC:</b> Lukolela (1°03’S, 17°12’E): 1 ♂.</p> <p> <b>Diagnosis.</b> The size alone sets this species well apart from all other morphologically similar looking taxa. The forewing length of the male holotype is 27 mm and the female allotype 31.5 mm. The forewing measurements of males from the other species are usually in the region of 20 mm with females measuring just a few mm longer. The male androconial structures (Fig. 10) are somewhat intermediate compared to more distinctly different members in the species-group. There is a rather thick cover of shiny dark scales and hairs in most of the anal areas of the dorsal hindwing and a comb of dark hairs covering the base of vein 1 on the dorsal forewing. The banding pattern on the ventral side is highly irregular, and the forewing shape is more drawn out towards the apex in the male compared to any of the other species in the group (Fig. 7). The ventral eyespots follow a more even curve than in the other <i>ignobilis</i> -group members. The light pattern on the female dorsal surfaces is much enlarged, reaching well down under the eyespot in space 2 and continuing into space 1b and 1a (Fig. 8). Just like the male, the female is very large compared to any of the other species in the group.</p> <p> <b>Distribution.</b> Southern Cameroon and western DRC (Fig. 29). This species was previously only known from the type pair collected in Bitje, Cameroon in 1910, and described some 50 years later by Condamin (1961; 1965). Since the beginning of the current century, collectors working for ABRI in Cameroon have found a further 34 specimens from a range of locations south of Sanaga River. In 2013 a single specimen was collected in Lukolela in DRC, suggesting an even larger range than previously reported (Brattström 2012). It has been suggested as likely to be present in Gabon, but despite extensive collection efforts in the country no specimens have yet been found (Vande weghe 2010). Given the small amount of collected material known in total for such a large conspicuous species, and mostly from areas where large collection efforts have recently been made, it is likely that the species is highly localised or has a behaviour making it likely to escape detection.</p>Published as part of <i>Brattström, Oskar, Aduse-Poku, Kwaku, Collins, Steve C. & Brakefield, Paul M., 2015, Revision of the Bicyclus ignobilis species-group (Lepidoptera: Nymphalidae: Satyrinae) with descriptions of two new species, pp. 57-79 in Zootaxa 4018 (1)</i> on page 65, DOI: 10.11646/zootaxa.4018.1.3, <a href="http://zenodo.org/record/289462">http://zenodo.org/record/289462</a>
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
FIGURES 7–10. Bicyclus rileyi Condamin 1961. 7 in Revision of the Bicyclus ignobilis species-group (Lepidoptera: Nymphalidae: Satyrinae) with descriptions of two new species
No full textFIGURES 7–10. Bicyclus rileyi Condamin 1961. 7. Male, Cameroon (OB–ABRI–1021). 8. Female, Cameroon (KAP–ABRI– 12–578). 9. Male genitalia, Cameroon (OB–ABRI–0050). 10. Androconial structures (ABRI–14– 657): There is a dark comb of hairs (but no brush like hair-pencil) in the basal area of space 1b on the dorsal forewing (encircled in white). The anal area of the hindwing has a dense cover of dark shiny hairs and scales. The hindwing cell-brush is mainly covered by the forewing so that only the most basal parts are visible.Published as part of Brattström, Oskar, Aduse-Poku, Kwaku, Collins, Steve C. & Brakefield, Paul M., 2015, Revision of the Bicyclus ignobilis species-group (Lepidoptera: Nymphalidae: Satyrinae) with descriptions of two new species, pp. 57-79 in Zootaxa 4018 (1) on page 66, DOI: 10.11646/zootaxa.4018.1.3, http://zenodo.org/record/28946
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
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