196,417 research outputs found
Plantopusa Koretsky & Rahmat 2021, gen. n.
No full textPlantopusa, gen. n. D i a g n o s i s. As for the type species. E t y m o l o g y. From Latin — Plana = flat; from Greek micro — short, small; “semenovi” in honour of Dr. Yuriy Semenov (Palaeontological Museum of the National Museum of Natural History, National Academy of Sciences of Ukraine, Kyiv = NMNHU-P) in recognition of his contributions to the discovery and collecting of this fossil material. T y p e a n d o n l y k n o w n s p e c i e s. Planopusa semenovi, new species.Published as part of Koretsky, I. A. & Rahmat, S. J., 2021, Unique Short-Faced Miocene Seal Discovered In Grytsiv (Ukraine), pp. 143-154 in Zoodiversity 55 (2) on page 145, DOI: 10.15407/zoo2021.02.143, http://zenodo.org/record/645584
Planopusa semenovi Koretsky & Rahmat 2021, sp. n.
No full textPlanopusa semenovi, sp. n. (figs 2–5; tables 1 –3) H o l o t y p e. NMNHU-P 64-709, rostral part of the skull with I3, C, P1, P2, and isolated P4 and M1; P3 is absent (fig. 2). Collected by Yu. A. Semenov in 1995 and stored in the NMNHPM. Type locality. Grytsiv, Shepetivskyi District Khmelnytskyi Region, Western Ukraine, karst deposits in limestone quarry on the right bank of Chomora River, 3 km west of village of Grytsiv; 49°58ˈ 05.2 N 27°10ˈ03 E (reef zone). F o r m a t i o n a n d A g e. Middle Sarmatian, middle-late Miocene; MN 9, likely in the interval from 11.146 –11.056 Ma. Diagnosis. Small seal with extremely short rostrum (table 1), differing from all other fossil and extant phocines by: 1) flattened palatal process of maxilla; 2) P4 longer than M1; 3) alveoli form a straight line; 4) wider rostrum across canines compared to other small Phocinae (but narrower than in Monachopsis pontica). Description. The partial skull likely belongs to an adult, based on the fused sutures. However, teeth are not worn, characteristic for sub-adults. The maxilla has a very short convexity over P1 and convexity started over P2. The incisive bone is partially broken and palatal process of the maxilla is flattened from the level of the anterior alveolus of P2. The large grooves (fissura palatine) from anterior palatal foramina are directed towards the incisors (as in Enhydra lutris, fig. 3), in contrast to the condition stated by Wozencraft (1989) for other phocids, but similar to seals of the subfamily Devinophocinae (Koretsky and Holec, 2002; Koretsky and Rahmat, 2015). The concave palatine is wider (18.0 mm) between canines, similar to that in Devinophoca emryi (Koretsky and Rahmat, 2015). The hard palate is half the length of the smallsub-adult of Pusa caspica. Palatal grooves are shallow, but present without the posterior palatal foramen. Part of the palatal bone is missing. Posterior border of the anterior palatal foramen is situated at the level of P1 (in contrast to that in Pusa caspica where it is between C and P1). In coronal view, the space between the posterior border of the anterior palatal foramen and the anterior border for the choanae is 7.5 mm (11.0 mm in Pusa caspica). The lingual alveolar margins of canines and incisors are at the same level as those of the cheek teeth (as in D. emryi), but alveolar margins of C and P1 are compressed towards the midline. From the anterior palatal foramina to the level of P2, the palatine is flat. A deep, antero-posteriorly aligned groove (sulcus palatinus) is present posterior to P2, characterized as a derived condition among phocids according to Wyss and Flynn (1993) and in contrast to D. emryi. Maxillary teeth: All teeth are very small with double roots (except C, P1). The incisors are arranged in a straight line. The roots of alveoli I3 are larger than I2, which in turn is larger than I1. The I3 crown is preserved with a small cingulum on the lingual side, round in cross-section. Cingula present only on lingual sides of the crown and do not extend the buccal (labial) side (in contrast to Devinophoca) (fig. 2). Canines project ventrally, slightly worn (possibly sub-adult), but the anterior surface in both canines is worn or due to overbite with grinding of the lower canine (figs 2, 3). The diastema is absent between C and P1, which is located obliquely to the tooth row. The snout is shortened, but the canines are relatively large compared to the length of the snout and other teeth, supporting the overbite hypothesis where the lower canine wears the upper, similar to those in Gulo gulo (wolverine) (IZUAN 896, from the Archangelsk area). Diastemata between postcanine teeth are absent. All alveoli are rounded and the posterior roots of P2, P4, and M1 are larger than anterior roots. Tooth crowns are not worn. The large paraconid (central cusp) is turned caudally, with one small anterior cusp and a posterior cusp that is larger and positioned higher. The third cusp is placed on the basal cingulum, located caudally to the posterior cusp, and it is much smaller than other cusps (especially smaller on M1). The P1 has a single root, oval in cross-section, almost intact (similar to Praepusa). Its crown is 5.0 mm long (table 2), with a conical (triangular) central cusp and cuspidate lingual cingulum bearing diminutive two posterior cusps (in contrast to D. emryi). Cinguli on P2, P4, and M1 are parallel to the lower enamel margin. On P2, P4, and M1, the gum line is parallel to the margin of the dentary. The complete crowns on postcanine teeth (except P1) are irregularly shaped in occlusal view (in contrast to D. emryi). The P1 is flattened disto-lingually on its lingual side. The cingulum, bearing minute cuspules, encircles the crown on the lingual side of the P1. The P2-M1 crowns are triangular in occlusal view and slightly worn. The P2-M1 teeth have two roots, both round in cross-section. The posterior root on P2 is wider and much larger than the anterior alveolus. The P2 is situated in parallel to the tooth row. The P2 crown has a very prominent lingual cingulum with a minute anterior cingular cusp and slightly larger than two posterior cusps. The cingulum on the labial side extends around the entire tooth (in contrast to D. emryi) with carinae (sharp tooth edges) similar to those observed in Monachinae (Amson and Muizon, 2014). The buccal side of the P4 is straight. This tooth has the widest crown base. Posterior root is larger than anterior one, with one anterior cusp, two posterior cusps, and an additional cusp on the lingual side of the cingulum. The crown is triangular in occlusal view. The P4 is larger than M1. The M1 is very small (5.5 mm long and 3.5 mm wide) with two fused roots. The crown is triangular in occlusal view, similar to other postcanines, but much smaller. The anterior cusp is absent, but there is a single posterior cusp and a gracile cingular posterior cusp. Cingulum on the labial side is absent; the tip of the tooth is turned caudally. Cingula are located transversely only on the lingual sides of the crown, not extending the labial (buccal) side (in contrast to those in Devinophoca). C o m p a r i s o n s w i t h s m a l l - s i z e d r e p r e s e n t a t i v e s o f t h e f a m i l y P h o c i d a ePublished as part of Koretsky, I. A. & Rahmat, S. J., 2021, Unique Short-Faced Miocene Seal Discovered In Grytsiv (Ukraine), pp. 143-154 in Zoodiversity 55 (2) on pages 145-149, DOI: 10.15407/zoo2021.02.143, http://zenodo.org/record/645584
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
Pontophoca Mc Laren 1960
No full textGenus <i>Pontophoca</i> Mc Laren, 1960 <p>1860 (atlas 1858) <i>Phoca</i> — von Nordmann: 317, 356–357, pl. 23, fig. 3, 7; pl. 24, fig. 1; 1922 <i>Phoca —</i> Kellogg: 120 (part); 1924 <i>Phoca —</i> Alekseev: 203, fig. 4–7; 1925 <i>Phoca —</i> Simionescu: 180, 188, 190–191, fig. 5P; pl. 1, fig. 2; 1941 <i>Phoca —</i> Macarovici, Oescu: 351–352, 363–367, 378–379, fig. 7, 8; pl. 2, fig. 13, 19; 1941 <i>Pontophoca</i> — Kretzoi: 354, fig. 3.2 (nom. nud.); 1942 <i>Phoca —</i> Macarovici: 262–263, 267, pl. 2, fig. 18.1; 1947 <i>Phoca —</i> Friant: 12; 1947 <i>Monachus</i> — Friant: 6, 16, 47–50, pl. 1, fig. 1a–c; 1956 <i>Phoca —</i> Pidoplichko: 142; 1960 <i>Phoca —</i> McLaren: 51, 52; *1960 <i>Pontophoca</i> — McLaren: 47, 52, fig. 1g, h, I; 1961 <i>Phoca</i> — Kirpichnikov: 29, 32, 34, 36; 1964 <i>Pontophoca —</i> King: 131; 1965 <i>Phoca —</i> Aslanova: 52; 1977 <i>Phoca —</i> Grigorescu: 407, 411, 413–418, fig. 5D; 1979 <i>Phoca —</i> Dubrovo, Kapelist: 36; 1985 <i>Phoca —</i> Trelea, Simionescu: 19; 1992 <i>Phoca —</i> Muizon: 35; 2002 <i>Pontophoca —</i> Koretsky, Grigorescu: 149–162, fig. 1–3.</p> <p>T y p e s p e c i e s: <i>Phoca sarmatica</i> Alekseev, 1924 (pl. 1, <i>1А, 1B</i>). Holotype from Kishinev, Moldova, Eastern Europe (Alekseev, 1924), Middle Miocene, middle Sarmatian.</p> <p>S t r a t i g r a p h i c a l r a n g e. Aside from the type locality the genus is also known from the late Miocene (early-middle Tortonian, 8.0–11.5 ma) of Denmark, northern Europe.</p> <p>I n c l u d e d s p e c i e s. Until now, only the type species was included in this genus. Here, we introduce a second species, <i>Pontophoca jutlandica</i> Koretsky et al., sp. n.</p> <p>R e f e r r e d m a t e r i a l. Mandible, scapula, tibiae and fibulae, femora, humeri, innominates (Koretsky, Grigorescu, 2002).</p> <p>E m e n d e d d i a g n o s i s. Lower premolars p1 and p2 double-rooted, placed parallel to tooth row axis; protoconid on p2 triangular; diastemata present; metaconid and basal cingulum weakly developed. Deltoid crest of humerus terminates in middle of diaphysis, its proximal part averted in dorsal direction; distal epiphysis considerably inflated compared to proximal epiphysis; lesser tubercle located higher than proximal end of deltoid crest and head; index of head’s height (ratio of head width/head height) near 100 %; supracondylar crest strongly developed. Height of femoral greater trochanter slightly exceeds that of head; its distal end narrower than its proximal end; head very small compared with the otherwise massive bone and seated on narrow neck; minimal width of diaphysis located in proximal part of bone between neck and distal part of greater trochanter; distal end of femur 1.4– 1.5 times broader than proximal end; condyles widely separated; maximal distance between epicondyles about or more than 70 % of bone’s length.</p>Published as part of <i>Koretsky, I., Rahmat, S. & Peters, N., 2014, Rare Late Miocene Seal Taxa (Carnivora, Phocidae) From The North Sea Basin, pp. 419-432 in Vestnik Zoologii 48 (5)</i> on page 421, DOI: 10.2478/vzoo-2014-0050, <a href="http://zenodo.org/record/6449169">http://zenodo.org/record/6449169</a>
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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