137,950 research outputs found
Getting involved and staying involved in academic research: Exploring the impact of exercise on cognition in older adults
No full textThis presentation will explore the various research and scholarly opportunities that led to Dr. Szabo-Reed\u27s current position as a faculty member in Internal Medicine. From her early research opportunities as an undergraduate student to working on several large randomized controlled exercise trials as a graduate student and exploring nutrition and weight loss as a postdoctoral fellow, each experience has impacted how Dr. Szabo-Reed explores the influence of exercise on cognition in older adults today. Dr. Szabo-Reed will also discuss how seeking funding opportunities and connecting with other researchers nationwide has impacted her career and research agenda. A discussion of important life decisions, accomplishments, and challenges will show how you can be an accomplished researcher at a large institution and a “super parent” at home at the same time
Columnocoenia falkenbergensis Baron-Szabo 2021, n. sp.
No full textColumnocoenia falkenbergensis n. sp. v1997 Columnocoenia cf. ksiazkiewiczi ksiazkiewiczi MORYCOWA, 1971: BARON- SZABO, p. 58, Pl. 4, Fig. 3. v2014 Columnocoenia ksiazkiewiczi MORYCOWA, 1964: BARON- SZABO, p. 30, Pl. 17, Figs. 3–4. 2020 Eocolumastrea sp.: KOŁODZIEJ & BUCUR, p. 8, Fig. 7H. Holotypus. ZSH H-KU–793, designated here. Derivatio nominis. Refers to the location from which the material was collected (Falkenberg, Bavaria, Germany). Locus typicus. Falkenberg, Bavaria, Germany. Stratum typicum. Schrattenkalk Formation, Upper Schrattenkalk, lower Aptian. Diagnosis. Columnocoenia having 24+s4 septa (often 26–28, up to around 40 in largest corallites) and corallite diameter ranging between 3–4.5 mm; in areas of intense budding, corallite diameters range between 1–2 mm having septa of 20 or less. Distance of corallite centers is 3–6.5 mm. Description. Massive, plocoid colony; corallites are subcircular to elongate in outline. Costosepta arranged radially in corallites of up to around 2 mm in diameter, becoming bilaterally arranged in larger corallites. Three complete cycles with the beginning of a fourth cycle are present in corallites of 3 mm in diameter or larger. Comparison. The new species differs from other Lower Cretaceous species in having larger corallites (C. ksiazkiewiczi MORYCOWA, 1964: 2 –3.5 mm; C. bucovinensis MORYCOWA, 1971: 1.2–2.3 mm; C. elachia BARON- SZABO, 2002: 0.9–1.3 mm). From most Upper Cretaceous species C. falkenbergensis differs in having smaller corallites (C. lamberti ALLOITEAU, 1957: 6 –8.5 mm; C. oppenheimi BEAUVAIS, 1982: 4–6 mm). From the Upper Cretaceous C. hofergrabensis (BEAUVAIS, 1982), the new species differs in having a greater number of septa (always more than 3 cycles of septa in C. falkenbergensis; a maximum of 3 cycles of septa in C. hofergrabensis). Material. ZSH H-KU–793 (Falkenberg, Germany) (holotype); additional specimen (paratype): SNSB-BSPG– 1997 V 85 (BARON- SZABO coll.) (Schrattenkalk Fm., Upper Schrattenkalk, Kürental area, Germany, lower Aptian) (for locality coordinates see APPENDIX TABLE 5). Distribution. Lower Aptian of southern Germany (Upper Schrattenkalk, Bavaria), middle Aptian of Romania. Remarks. MORYCOWA & MARCOPOULOU- DIACANTONI (2002, p. 47–48) already suggested that the Schrattenkalk material assigned to ksiazkiewiczi differed from MORYCOWA’ S species in having larger corallites.Published as part of Baron-Szabo, Rosemarie Christine, 2021, Upper Barremian-lower Aptian scleractinian corals of central Europe (Schrattenkalk Fm., Helvetic Zone, Austria, Germany, Switzerland), pp. 1-199 in Zootaxa 4960 (1) on page 79, DOI: 10.11646/zootaxa.4960.1.1, http://zenodo.org/record/469378
Effects of carbides on fatigue characteristics of austempered ductile iron
No full textCrack initiation and growth behavior of an austempered ductile iron (ADI) austenitized at 800 °C and austempered at 260 °C have been assessed under three-point bend fatigue conditions. Initiation sites have been identified as carbides remaining from the as-cast ductile iron due to insufficient austenization. The number of carbides cracking on loading to stresses greater than 275 MPa is critical in determining the failure mechanism. In general, high carbide area fractions promote coalescence-dominated fatigue crack failure, while low area fractions promote propagation-dominated fatigue crack failure. Individual carbides have been characterized using finite body tessellation (FBT) and adaptive numerical modeling (SUpport vector Parsimonious ANalysis Of VAriance (SUPANOVA)) techniques in an attempt to quantify the factors promoting carbide fracture. This indicated that large or long and thin carbides on the whole appear to be susceptible to fracture, and carbides that are locally clustered and aligned perpendicular to the tensile axis are particularly susceptible to fracture
FNT-based reed-solomon erasure codes
No full textThis paper presents a new construction of Maximum-Distance Separable (MDS) Reed-Solomon erasure codes based on Fermat Number Transform (FNT). Thanks to FNT, these codes support practical coding and decoding algorithms with complexity O(n log n), where n is the number of symbols of a codeword. An open-source implementation shows that the encoding speed can reach 150Mbps for codes of length up to several 10,000s of symbols. These codes can be used as the basic component of the Information Dispersal Algorithm (IDA) system used in a several P2P systems
The use of reed canary-grass (Phalaris arundinacea) as a short fibre raw material for the pulp and paper industry
No full textThis thesis describes the use of delayed harvested reed canary-grass (Phalaris arundinacea) as a short fibre raw material for the pulp and paper industry. This study examines the following aspects of reed canary-grass: quality, transportation, storage, refining of the raw material by dry fractionation, chemical pulping, bleaching and paper production. The delayed harvesting method of reed canary-grass produces an economically and environmentally sustainable short fibre raw material for the pulp and paper industry. The ash content and fibre properties of reed canary-grass depend on soil type and growing location. The yearly variation in fibre yield and fibre properties is also considerable. There is, however, a potential for minimising quality variations by choosing reed canary-grass varieties suitable to a specific growing location. The leaf and leaf sheath content of reed canary-grass also affects the quality of the pulp. These quality variations can be eliminated by dry fractionation, a method that removes the unwanted parts of the grass. These unwanted parts can be used as a valuable bio-fuel raw material. Transport of reed canary grass after fractionation can be improved by briquetting, a method that doubles the transport capacity of reed canary-grass compared to that of birch logs on a fibre basis. High quality short fibre chemical pulp can be produced from reed canary-grass. The whole process from grass production to pulp production has been demonstrated successfully in full scale. Bleached reed canary-grass pulp can be used in products such as fine paper and white-top liner paper
Giant Reed
No full textGiant reed (Arundo donax L.) is a C3 perennial rhizomatous grass belonging to the Gramineae family, originating in Asia and later spreading to different subtropical wetlands and warm-temperature regions of Europe, Africa, North America, and Oceania. A wide range of yields is reported in the literature depending on the site, climate, soil type and fertility, inputs, cultivation and harvest practices, and age of plantation. Although it produces flowers, seeds are not fertile. Consequently, its propagation is carried out mainly by rhizomes or stem cuttings. Giant reed has an uncommonly high photosynthetic capacity as compared to other C3 species, and is very similar to those of C4 species. It is able to achieve high photosynthetic rates, up to ∼38μmol CO2 m−2 s−1 in well-watered treatments, but with substantial transpiration, leading to low or at least lower water use efficiency than many C4 crops (1.19–2.47gkg−1), but is still more efficient than most C3 species. Radiation use efficiency increases proportionally as nitrogen and available water are increased, and can range from 1.26 to 2.02gMJ−1, although higher values of 5.74gMJ−1-intercepted photosynthetically active radiation are also reported. These are much lower than miscanthus, a typical C4 species. Nitrogen use efficiency (NUE) can range from 168.4 to 467gg−1; single and late harvests, young plantations, and low nitrogen rates lead to increased NUE. Giant reed is also considered as a moderately saline-sensitive plant as it was able to maintain >50% of its relative growth when salinity was <12dSm−1. The response of giant reed to N fertilization is expected to be minimal or even zero, as long as the soil nitrogen availability, the rhizomes reserves, and other N inputs are sufficient to supply the uptakes. On the other hand, irrigation plays a significant role in increased dry matter yields, being 30.0%–40.0% higher in well-watered than in rainfed conditions. However, giant reed can also be considered as a drought-resistant crop. The harvest of A. donax is fully mechanized. The choice of a harvest method over another is determined by several parameters, such as crop status, biomass moisture content at harvest, logistics, availability of equipment and type of storage, required biomass quality, and final use. Fuel characteristics of the harvested material, such as calorific value (17–18.8MJ), ash (5.3%–8.1%) content of stems as well as its cellulose (43.4%), hemicellulose (25.1%–29.2%), and lignin (10.6%) content can be considered satisfactory for the production of energy, biogas, advanced biofuels, paper, and pulp. Recently, interest has been concentrated on the production of fuels, chemicals, and other products of high added value within a multiproduct biorefinery
Benvenuto, Mr. Reed
No full textIntervento/prolusione alla consegna del Premio Internazionale "Alberto Dubito" di Poesia a Ishmael Reed (Venezia, maggio 2016
Negotiating the semantics of agent communication languages
No full textThis paper presents a formal framework and outlines a method that autonomous agents can use to negotiate the semantics of their communication language at run-time. Such an ability is needed in open multi-agent systems so that agents can ensure they understand the implications of the utterances that are being made and so that they can tailor the meaning of the primitives to best fit their prevailing circumstances. To this end, the semantic space framework provides a systematic means of classifying the primitives along multiple relevant dimensions. This classification can then be used by the agents to structure their negotiation (or semantic fixing) process so that they converge to the mutually agreeable semantics that are necessary for coherent social interactions
Black-holes, topological strings and large N phase transitions
No full textThe counting of microstates of BPS black-holes on local Calabi-Yau of the form (p-2)?(-p) S2 is explored by computing the partition function of q-deformed Yang-Mills theory on S2. We obtain, at finite N, the instanton expansion of the gauge theory. It can be written exactly as the partition function for U(N) Chern-Simons gauge theory on a Lens space, summed over all non-trivial vacua, plus a tower of non-perturbative instanton contributions. In the large N limit we find a peculiar phase structure in the model. At weak string coupling the theory reduces to the trivial sector and the topological string partition function on the resolved conifold is reproduced in this regime. At a certain critical point, instantons are enhanced and the theory undergoes a phase transition into a strong coupling regime. The transition from the strong coupling phase to the weak coupling phase is of third order. © 2006 IOP Publishing Ltd.</p
I. Szabo, A jogszabalyok értelmezése
No full textI. Szabo, A jogszabalyok értelmezése. In: Revue internationale de droit comparé. Vol. 13 N°3, Juillet-septembre 1961. pp. 697-699
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