Interview with Yolande Bavan Member of Lambert, Hendricks and Bavan Vocalist, The Real Ambassadors, 1962 Monterey Jazz Festival Date of Interview: September 23, 2012

Dave and Iola Brubeck created The Real Ambassadors in the late 1950s. The jazz musical pointed out the absurdity of segregation and makes the case that artists such as Louis Armstrong are the best and real ambassadors to demonstrate a nation\u27s ideals. It was recorded in 1961 and performed live only once. Despite their efforts, the play never made it to stage. Here is a collection of letters, photographs, scripts, and audio that document the creation of The Real Ambassadors.https://scholarlycommons.pacific.edu/trai/1000/thumbnail.jp

Seismic fragility of concrete building in Malaysia considering the effects of inadequate lap splice length

The tremors due to Sumatra earthquake have been reported recently with low to moderate seismic activity level, which have been causing fear to people who are in Peninsula Malaysia. Those, that the new structure should be built or partially built with retrofitting of the existing structure, are the major questions to design globe, which lead essential seismic hazard assessment is necessary to ground motion scenarios due to potential earthquakes. A gap in the previous studies was identified that the inadequate lap splice length in column may give higher probability of exceedance in the seismic design. Accordingly, the seismic fragility curve development is useful in contributing further insight to the continuing evolution of low ductile reinforced concrete frame subjected to far field ground motions with studying the effects of inadequate lap splice length. Three models such as three-, six- and nine- storeys, in low ductile bare reinforced concrete frames developed through ETABS, were included in this study. In order to develop the adequate lap splice lengths to RC frame in ETABS, the P-M2-M3 hinges were assigned to all joints in column with “controlled” dynamic lap splice lengths under column behaviour while all hinges in beam and columns were developed with the behaviours based on American Society of Civil Engineers, ASCE 41-13, standard of seismic evaluation and retrofit of existing buildings. Subsequently, all RC frame models were subjected to analyses such as static pushover, push over with first mode and push over with dynamic mode, the observation of the plastic hinges formation in terms of the damage levels of IO, LS and CP were predicted, and finally, the maximum storey drifts of each damage level were projected to determine as capacity of RC frame in the development of fragility assessment. In addition, the performance of all models was studied by a series of Incremental Dynamic Collapse Analysis (IDA) by means of incremental of 0.05g until 0.50g, which were subjected to 15 far-field ground motions. Based on maximum storey drifts in each analysis from IDA, the median, standard deviation and standard error corresponding to Peak Ground Acceleration (PGA) value were attained as demand of the fragility assessment. Finally, according to the predicted capacity and demand, the fragility curves were presented to the frames of 3-storey, 6-storey and 9-storey with column behaviour consisted of controlling inadequate development or splicing subjected to far-field earthquake excitations. By providing adequate lap splice lengths in columns, the push over analysis showed that there were no damages in columns near foundation while the columns near foundation showed the damage levels of IO, LS and CP when they do have inadequate lap splice lengths. In capacity assessment by push over analysis, maximum storey drifts in all cases were increased by providing adequate lap splice lengths, which this trend brought to be stated that the columns were improved in strength to bear horizontal loads against horizontal displacement. Also, based on the observation of plastic hinge formations at all levels, the damage levels were postponed by providing adequate lap splice lengths to columns and this is a very convenient representation to avoid column failure and postpone the damaged states. Based on the predicted maximum storey drifts from IDA, the storey drifts were lower in all cases due to providing adequate lap splice lengths to columns, which this study brought that the parameter of inadequate lap splice length will be super imposition parameter in controlling the drifts and avoiding structural damages. Developed fragility curves can be a statistical tool in representing the probability of exceeding against PGA and for estimating a specific damage measure in design practice

NUMERICAL PREDICTION OF COMPOSITE BEAM SUBJECTED TO COMBINED NEGATIVE BENDING AND AXIAL TENSION

The present study has investigated the finite element method (FEM) techniques of composite beam subjected to combined axial tension and negative bending. The negative bending regions of composite beams are influenced by worsen failures due to various levels of axial tensile loads on steel section especially in the regions near internal supports. Three dimensional solid FEM model was developed to accurately predict the unfavourable phenomenon of cracking of concrete and compression of steel in the negative bending regions of composite beam due to axial tensile loads. The prediction of quasi-static solution was extensively analysed with various deformation speeds and energy stabilities. The FEM model was then validated with existing experimental data. Reasonable agreements were observed between the results of FEM model and experimental analysis in the combination of vertical-axial forces and failure modes on ultimate limit state behaviour. The local failure modes known as shear studs failure, excess yielding on steel beam and crushing on concrete were completely verified by extensive similarity between the numerical and experimental results. Finally, a proper way of modelling techniques for large FEM models by considering uncertainties of material behaviour due to biaxial loadings and complex contact interactions is discussed. Further, the model is suggested for the limit state prediction of composite beam with calibrating necessary degree of the combined axial loads

A P2X receptor from the tardigrade species Hypsibius dujardini with fast kinetics and sensitivity to zinc and copper

<p>Abstract</p> <p>Background</p> <p>Orthologs of the vertebrate ATP gated P2X channels have been identified in <it>Dictyostelium </it>and green algae, demonstrating that the emergence of ionotropic purinergic signalling was an early event in eukaryotic evolution. However, the genomes of a number of animals including <it>Drosophila melanogaster </it>and <it>Caenorhabditis elegans</it>, both members of the Ecdysozoa superphylum, lack P2X-like proteins, whilst other species such as the flatworm <it>Schistosoma mansoni </it>have P2X proteins making it unclear as to what stages in evolution P2X receptors were lost. Here we describe the functional characterisation of a P2X receptor (<it>Hd</it>P2X) from the tardigrade <it>Hypsibius dujardini </it>demonstrating that purinergic signalling is preserved in some ecdysozoa.</p> <p>Results</p> <p>ATP (EC₅₀~44.5 μM) evoked transient inward currents in <it>Hd</it>P2X with millisecond rates of activation and desensitisation. <it>Hd</it>P2X is antagonised by pyridoxal-phosphate-6-azophenyl-2',4' disulfonic acid (IC₅₀15.0 μM) and suramin (IC₅₀22.6 μM) and zinc and copper inhibit ATP-evoked currents with IC₅₀values of 62.8 μM and 19.9 μM respectively. Site-directed mutagenesis showed that unlike vertebrate P2X receptors, extracellular histidines do not play a major role in coordinating metal binding in <it>Hd</it>P2X. However, H306 was identified as playing a minor role in the actions of copper but not zinc. Ivermectin potentiated responses to ATP with no effect on the rates of current activation or decay.</p> <p>Conclusion</p> <p>The presence of a P2X receptor in a tardigrade species suggests that both nematodes and arthropods lost their P2X genes independently, as both traditional and molecular phylogenies place the divergence between Nematoda and Arthropoda before their divergence from Tardigrada. The phylogenetic analysis performed in our study also clearly demonstrates that the emergence of the family of seven P2X channels in human and other mammalian species was a relatively recent evolutionary event that occurred subsequent to the split between vertebrates and invertebrates. Furthermore, several characteristics of <it>Hd</it>P2X including fast kinetics with low ATP sensitivity, potentiation by ivermectin in a channel with fast kinetics and distinct copper and zinc binding sites not dependent on histidines make <it>Hd</it>P2X a useful model for comparative structure-function studies allowing a better understanding of P2X receptors in higher organisms.</p

Caričin Grad – arheološka istraživanja u 2018. godini

Istraživanja Caričinog Grada (Justiniana Prima) nastavljena su tokom 2018. godine u okviru projekta Srpsko-francusko-nemačka arheološka istraživanja u oblasti Caričinog grada. U toku kampanje, sprovedene između 3. jula i 4. avgusta, istraženi su objekti 19c i 20 – horeum i prostor između njih. Pored toga, očišćena je osnova objekta 22 i kompleks građevina podno istočnog bedema i potkovičaste kule Akropolja, označen kao objekat 28 (sl. 1). U radovima su pored saradnika Arheološkog instituta učestvovali istraživači Nacionalnog centra za naučna istraživanja (Centre national de la recherche scientifique UMR 7004) iz Strazbura i Rimsko-germanskog centralnog muzeja (Römisch-Germanisches Zentralmuseum) iz Majnca

Synthesis and characterisation of graphene-reinforced AA 2014 MMC using squeeze casting method for lightweight aerospace structural applications

The need for lightweight materials towards aerospace has increased prominently. This paper focuses on introducing a novel reinforcement mixture of graphene with Al 2014 powder synthesised through ball milling technique. The synthesized powder was utilized as a reinforcement to fabricate Al 2014 based MMCs through squeeze casting technique. The results exhibited that Al 2014 mixture with embedded and interlocked 2D-Grnp (2.517 g/cm3) matched the density of the matrix metal (2.771 g/cm3) that facilitated homogeneous dispersion of 2D-Grnp and solved the dispersion problems during stir casting. As a result, AA 2014 embedded with 2D-Grnp acted as a carrier to homogeneously disperse combined with the squeeze casting process leading to the production of homogeneously reinforced MMC. This can be considered as a potential fabrication route for the launch vehicle super lightweight fuel tank (SLWT) structural application. The final casted plate after T6 heat treatment with 0.5 wt% 2D-Grnp exhibited an improved tensile strength of 361 MPa (52% higher than the monolithic 2014 aluminium alloy) with total elongation of 21% and improved hardness of 119 HRB (45.5 % increase). Furthermore, SEM and TEM results exhibited that squeeze casting led to enhanced interfacial bonding between the 2D-Grnp and Al 2014

Soliton surfaces associated with CP^{N-1} sigma models

Soliton surfaces associated with CP^{N-1} sigma models are constructed using the Generalized Weierstrass and the Fokas-Gel'fand formulas for immersion of 2D surfaces in Lie algebras. The considered surfaces are defined using continuous deformations of the zero-curvature representation of the model and its associated linear spectral problem. The theoretical framework is discussed in detail and several new examples of such surfaces are presented.Comment: 14 page

A comprehensive review of techniques for natural fibers as reinforcement in composites::preparation, processing and characterization

Designing environmentally friendly materials from natural resources represents a great challenge in the last decade. However, the lack of fundamental knowledge in the processing of the raw materials to fabricate the composites structure is still a major challenge for potential applications.Natural fibers extracted from plants are receiving more attention from researchers, scientists and academics due to their use in polymer composites and also their environmentally friendly nature and sustainability. The natural fiber features depend on the preparation and processing of the fibers. Natural plant fibers are extracted either by mechanical retting, dew retting and/or water retting processes. The natural fibers characteristics could be improved by suitable chemicals and surface treatments. This survey proposes a detailed review of the different types of retting processes, chemical and surface treatments and characterization techniques for natural fibers. We summarize major findings from the literature and the treatment effects on the properties of the natural fibers are being highlighted

An artificial neural network that recognizes an ordered set of words in text mining

This paper presents an artificial neural network based tool that locates an ordered set of words in a text. The network model is essentially a single layer network similar to Hopfield model that uses a Hebbian approach to activate the feature layer nodes (see section 2). This model was initially developed to go with our Connectionist Associative Memory Model (CAMM) and later found to be useful in text mining tasks as well. Further additions of features are currently under way to generate statistics and structural graphs based on semantic relationships