5,426 research outputs found
Voice Compression and Communications: Principles and Applications for Fixes and Wireless Channels
No full textUp-to-date, expert coverage of topics in wireless voice communications Voice communication is the most important facet of mobile radio service. Even when the predicted surge of wireless data and Internet services becomes a reality, voice will remain the most natural means of human communication. Voice Compression and Communications details issues in wireless voice communications and treats compression, channel coding, and wireless transmission as a joint subject. Part I covers background material, whereas Part II provides detailed information on both proprietary and standardized analysis-by-synthesis codecs, including the speech codecs of virtually all existing wireline-based and wireless systems. Parts III and IV discuss mainly research-based wideband, audio, as well as very low-rate schemes likely to find their way into future standards. Voice Compression and Communications describes fundamental concepts in a non-mathematical way early in the book for those with only a background knowledge of signal processing and communications. More advanced readers will find detailed discussions of theoretical principles, future concepts, and solutions to various specific wireless voice communications problems
1973-10-25 Morehead State Concert and Lecture Series J.P. Donleavy
No full textRenowned author J.P. Donleavy speaks on the plight of an author and the methods to write, recorded on October 25, 1973
Inserting Computational Technologies In Architectural Curricula
No full textThis chapter describes two case studies concerning the introduction of computational design methods and technologies in new undergraduate architectural curricula, one in Portugal and the other in Brazil. In both cases, the immediate goal was to introduce state-of-the-art technologies in the curriculum to promote creative design thinking. The ultimate goals were to fulfill the criteria of intellectual satisfaction, acquisition of specialized professional skills, and contribution for the economic development of society that should underlie university education. The chapter describes the theoretical framework, the various courses and labs that were devised and implemented, as well as the strategies used to implement them. Then it presents the final results and concludes with a discussion of the pros and cons of each strategy. The main lesson drawn from both efforts was that cultural and organizational aspects are at least as important as technical aspects for the successful integration of computer media in architectural education. © 2012, IGI Global.390411Akin, O., Computational design instruction: Towards a pedagogy (1990) The Electronic Design Studio, pp. 302-316. , In Mitchell, W. J., & Purcell, P. (Eds.), Cambridge, MA: MIT PressBeamish, A., (2008) Learning From Work: Designing Organizations For Learning and Communication. Stanford, CA, , Stanford: Business BooksBenrós, D., Duarte, J.P., An integrated system for providing mass customized housing (2009) Automation In Construction, 18, pp. 310-320. , doi:10.1016/j.autcon.2008.09.006Breen, J., Changing roles for (multi) media tools in design - Assessing developments and applications of (multi)media techniques in design education, practice and research (2004) Architecture In the Network Society, 22nd ECAADe Conference Proceedings, pp. 530-539. , In B. Rudiger, B. Tournay, & H. Orbaek (Eds.), Copenhagen, Denmark: Royal Danish Academy of Fine ArtsCaldas, L.G., Duarte, J.P., Fabricating innovative ceramic covers: Re-thinking roof tiles in a contemporary context (2005) 23rd ECAADe Conference Proceedings, pp. 269-276. , In J. Duarte (Ed.), Lisbon, Portugal: IST PressCelani, G., A importância da pesquisa na formação de docentes: O caso da informática (2007) Cadernos De Pós-graduação Em Arquitetura E Urbanismo, 7 (1), pp. 1-10Celani, G., Teaching CAD programming to architecture students (2008) Revista Gestão & Tecnologia De Projetos, 3 (2), pp. 1-23Chen, N., Kvan, T., Wojtowicz, J., van Bakergem, D., Casaus, T., Davidson, J., Place, time, and the virtual design studio (1994) Reconnecting, 14th ACADIA Conference Proceedings, pp. 115-132. , In A.C.Harfmann & M.Fraser (Eds.), St. Louis, MO: Washington UniversityDuarte, J.P., Towards the mass customization of housing: The grammar of Siza's houses at Malagueira (2005) Environment and Planning. B, Planning & Design, 32 (3), pp. 347-380. , doi:10.1068/b31124Duarte, J.P., Caldas, L.G., Rocha, J., Freeform ceramics: Design and production of complex forms with ceramic elements (2004) Architecture In the Network Society, 22nd ECAADe Conference Proceedings, pp. 174-183. , In B. Rudiger, B. Tournay, & H. Orbaek (Eds.), Copenhagen, Denmark: Royal Danish Academy of Fine ArtsMark, E., Martens, B., Oxman, R., The ideal computer curriculum (2001) Architectural Information Management, 19th ECAADe Conference Proceedings, pp. 168-175. , In H. Penttila (Ed.), Helsinki, Finland: Helsinki University of TechnologyMitchell, W.J., The theoretical foundation of computer-aided architectural design (1975) Environment and Planning B, 2, pp. 127-150. , doi:10.1068/b020127Mitchell, W.J., McCullough, M., (1994) Digital Design Media, , New York, NY, Van Nostrand ReinholdOxman, R., Theory and design in the first digital age (2006) Design Studies, 27, pp. 229-265. , doi:10.1016/j.destud.2005.11.002Pupo, R.T., Celani, G., Prototipagem Rápida e Fabricação Digital para Arquitetura e Construção: Definições e Estado da Arte no Brasil (2008) Cadernos De Pós Graduação Em Arquitetura E Urbanismo, 8 (1), pp. 31-41Schon, D., (1987) Educating the Reflective Practitioner, , San Francisco, CA, Josey-Bass PublishersSchon, D.A., Wigging, G., Kinds of seeing and their functions in designing (1992) Design Studies, 13 (2), pp. 135-156. , doi:10.1016/0142-694X(92)90268-FWojtowicz, J., Davidson, J.N., Mitchell, W.J., Design as digital correspondence (1992) Computer Supported Design In Architecture: Mission, Method, Madness, 12th ACADIA Conference Proceedings, pp. 89-101. , In K. Kensek & D. Noble (Eds.), Charleston, SC: Clemson UniversityWojtowicz, J., Papazian, P., Fargas, J., Davidson, J.N., Cheng, N., Asynchronous architecture (1993) Education and Practice: The Critical Interface, 13th ACADIA Conference Proceedings, pp. 107-117. , In F. Morgan & R. Pohlman (Eds.), College Station, TX: Texas A & M Universit
Bothynus condacki Duarte & Grossi 2020, new species
No full text<i>Bothynus condacki</i> Duarte & Grossi, new species <p>(Figs. 6 A–B; 8F; 9F; 12F)</p> <p> <b>Diagnosis.</b> <i>Bothynus condacki</i> is similar to <i>B. stenelus.</i> However, <i>B. condacki</i> can be distinguished by the following characters: metatrochanter with acute apex (Fig. 6B) (apex rounded in <i>B. stenellus</i>); parameres with rounded lateral flaps, and with a strong apical contraction at inner margin of right paramere (Fig. 8F).</p> <p> <b>Etymology</b>. The specific epithet is a tribute to the collector of the holotype, João Condack, who is an expert on Pteridophyta.</p> <p> <b>Type material</b>. Holotype male dissected. <b>Brasil</b>: <b>Minas Gerais</b>: Conceição do Ibitipoca, 28.XII.1998, J.P. Condack—(CERPE).</p> <p> <b>Description</b>. <b>Holotype male</b> (Fig. 6A). <b>Body length</b>: 24.0 mm. <b>Body width</b>: 13.mm. <b>Color</b>: Completely dark. <b>Head</b>: Clypeus subpentagonal, densely punctate, glabrous, apex with 2 short teeth. Frontoclypeal suture with 2 small, transverse tubercles. Interocular width equals 3.3 transverse eye diameter; frons with surface coarsely ru- gopunctate, with scarce setae scattered laterally near eyes. <b>Mouthparts</b>: Mandibles tridentate; apical and medial teeth triangular, basal tooth lobed and smaller than previous tooth. Maxilla with quadridentate galea; 2 strong apical teeth, 2 weak basal teeth. Mentum subtriangular, surrounded with setose punctures, discal area slightly convex, glabrous. <b>Pronotum:</b> Strongly convex posteriorly in lateral view; anterior area with a small apical tubercle followed by a, rounded shaped concavity, moderately deep. Discal and lateral areas finely punctate; concavity punctate in 2 areas at sides, anteriorly with dense, C-shaped and coalescent punctures, becoming moderately punctate toward posterior area. <b>Scutellar shield</b>: Subparabolic shaped, smooth, 1.7 times wider than long. <b>Elytra</b>: Surface nearly completely smooth, punctures inconspicuous (only observed under 90X magnification), longitudinal striae barely marked. <b>Legs</b>: Protarsomere V with 1 ventro-basal tooth; protarsomere IV extending ventrally, nearly reaching the apex of the ventro-basal tooth of tarsomere V. Metatrochanter with acute apex (Fig. 6B). <b>Abdomen</b>: Ventrite I completely, densely setose, II–VI moderately setose on sides, becoming gradually weak toward disc; discal area glabrous. Tergite VII with stridulatory apparatus formed by a band of innumerous, transverse, finely marked carinae. Tergite VIII nearly smooth, only with transverse, oval shaped punctures, confined to disc. <b>Aedeagus</b>: Parameres in caudal view (Fig. 8F), nearly symmetric, middle area with narrow outer margins, apical half with lateral flaps distinctly wider than basal half, apex of the right paramere with a strong contraction at inner margin. In lateral view, apex shortened, downcurved (Fig. 9F).</p> <p> <b>Female</b>. Unknown.</p> <p> <b>Geographic distribution</b>: Brazil: Minas Gerais (Fig. 12F). <i>Bothynus condacki</i> is known only from southeastern Brazil, in a locality dominated by Cerrado and open Rupestrian fields. This is the only species of the <i>B. entellus</i> species group that occurs in a xeric habitat, the other species are found in very wet, forested habitats.</p>Published as part of <i>Duarte, Paulo R. M. & Grossi, Paschoal C., 2020, Bothynus entellus (LePeletier & Serville) (Coleoptera: Scarabaeidae: Dynastinae) species group: taxonomic revision and description of two new species, pp. 101-121 in Zootaxa 4750 (1)</i> on pages 113-118, DOI: 10.11646/zootaxa.4750.1.5, <a href="http://zenodo.org/record/3702869">http://zenodo.org/record/3702869</a>
Entrainment and detrainment rates from the piv measurements at the top of laboratory analogs of stratocumulus and cumulus clouds
No full textWe analyze mixing at the top of laboratory analogs of convective clouds: stratocumulus and cumulus to investigate entrainment of environmental air into the cloud. We retrieve two components of air velocity using Particle Image Velocimetry technique. Suitable image processing allows to determine cloud–clear air interface. Using velocity differences between cloudy and clear sides of the interface we calculate entrainment / detrainment rates
CItyMaker: Designing Grammars for Urban Design
No full textDue to its complexity, the evolution of cities is something that is difficult to predict and planning new developments for cities is therefore a difficult task. This complexity can be identified on two levels: on a micro level, it emerges from the multiple relations between the many components and actors in cities, whereas on a macro level it stems from the geographical, social and economic relations between cities. However, many of these relations can be measured. The design of plans for cities can only be improved if designers are able to address measurements of some of the relationships between the components of cities during the design process. These measurements are called urban indicators. By calculating such measurements, designers can grasp the meaning of the changes being proposed, not just as simple alternative layouts, but also in terms of the changes in indicators adding a qualitative perception. This thesis presents a method and a set of tools to generate alternative solutions for an urban context. The method proposes the use of a combined set of design patterns encoding typical design moves used by urban designers. The combination of patterns generates different layouts which can be adjusted by manipulating several parameters in relation to updated urban indicators. The patterns were developed from observation of typical urban design procedures, first encoded as discursive grammars and later translated into parametric design patterns. The CItyMaker method and tools allows the designer to compose a design solution from a set of programmatic premises and finetune it by pulling parameters whilst checking the changes in urban indicators. These tools improve the designer’s awareness of the consequences of their design moves.Building Technology / UrbanismArchitectur
Vortex Dynamics in The Transitional and Turbulent Wake of 6:1 Prolate Spheroid at 45-deg incidence angle
No full textThe incompressible flow past a 6:1 prolate spheroid with an inclination angle of 45o at Re = 3,000 has been studied by means of direct numerical simulations (DNS). The Reynolds number is based on the inflow velocity and minor-axis length. The preliminary results presented here are focused mainly on vortex dynamics and vortical structures in the wake. The wake behind this configuration starts almost symmetric but is soon strongly deflected and bent as it evolves to the intermediate wake. A pair of unequal-strength vortices dominates the intermediate wake, of which one exhibits the shape of a long vortex tube while the other rapidly breaks down into turbulent-like vortical structures
Experimental characterisation of large scale structures in a high Reynolds number turbulent boundary layer
No full textA very large field of view (4δ x 1δ) with a good spatial resolution owing to the use of four 2k x 2k pixel cameras was conducted in a flat plate boundary layer at two Reynolds numbers (Reθ ≈7,500 and 20,000). Comparing the flow statistics with previously obtained hot-wire data under similar flow conditions show good agreement. The goal of this experiment is to detect and characterise the large scale motions which develop in the log region of a high Reynolds number turbulent boundary layer
Letter from J.P. Bradley to Mr. [William] S. Martin The Dominguez Estate Company, June 28, 1940
No full textRegarding attached payment by Mr. K.L. Schaap settling his account
Collaborative design in education : evaluation of three approaches
No full textCollaboration in design can take place in a physical, social space, in a distributed or virtual environment, or in a combination of both. Design teams use a range of ICT means to support both synchronous and asynchronous communication. While these tools are designed to facilitate collaboration, the collaboration process still requires planning and organisation in a social context, which are activities that students and professionals need to learn. In current practice there is a need for designers and design managers who have the competences to collaborate in design and to organise distributed collaboration processes. At the department of Architecture, Building, and Planning at Eindhoven University of Technology, we have developed a course on Collaborative Design in the Master of Science curriculum. This course addresses both the organisational, social, and technical issues of collaboration in design. The paper introduces the objectives and educational methods used in this course. It describes the experiences of both teachers and students that were gained now that the course was taught in three subsequent year
- …
