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Proposa. for Genera.ion of the Three-Wa. Perceptua. Ma. Using Non-metric Multidimensiona. Sca.ing with Clusters

Journa. of Ma.hema.ics a.d System Science 2012年第9期2卷 564-569页

作者： Moa.yr Ma.ha.o cardoso Junior Rodrigo a.a.do Sca.pel Sa.ety Engineering Division Technological Institute of Aeronautics Sao Jose dos Campos 12200-000 Brazil Depa.tment of a.ro & Mecha.ica. Engineering Technological Institute of Aeronautics S6o Jos~ dos Campos 12200-000 Brazil

The genera.ion of a.perceptua. ma. via.three-wa. multidimensiona. sca.ing a.lows a.a.ysts to see the sepa.a.ion of objects in Euclidea. spa.e. The MDSva.ext method incorpora.es the objects" confidence regions in this a.a.ysis, a.lowing for sta.istica. inference in the difference between objects, but the confidence regions tha. a.e genera.ed a.e very la.ge beca.se of the inherent va.ia.ility a.ong the eva.ua.ors. One solution to this problem is cluster genera.ion prior to the a.plica.ion of the MDSva.ext method in order to obta.n homogeneous subgroups a.d to a.hieve grea.er control of the va.ia.ce. This work is releva.t to studies of perception which usua.ly eva.ua.e the difference between objects or stimuli in the point of view of different people tha. judge this difference using severa. dimensions. This study investiga.ed the possibility of using a.K-mea.s a.gorithm to genera.e subgroups before the MDSva.ext method wa. a.plied, eva.ua.ing the process with two qua.ity indica.ors, one Ex-a.te a.d one Ex-Post. The experiments were conducted ba.ed on simula.ion of judgment ma.rix of different objects in multiple dimensions being eva.ua.ed by severa. judges. In this experiment, the ma.rix used wa. a.10 objects, in 10 fea.ures, judged by 10 people. The results a.e promising a. possible interpreta.ions of the perceptua. ma. a.d the indica.ors genera.ed.

关键词：地图集群多维感知 K-mea.s算法评估对象度量三通

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Study on Combina.ion of Engine/Stea. Turbine Cycle for Improving the Energy Conversion

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Journa. of Energy a.d Power Engineering 2011年第5期5卷 434-437页

作者： a.M. Ba.bosa.S. cardoso D. Ba.tos-Netto Va.e Solucoes em Energia.S.a.Pa.que Tecnol6gico Rodovia Presidente Dutra km 138 Sao Jose dos Campos 12247-004 SP Brazil

This work discusses the combina.ion of two thermodyna.ic cycles seeking to improve the overa.l chemica. energy conversion ra.e into mecha.ica. energy. Here one engine opera.es a.cording a.Ra.kine cycle in order to use pa.t of the therma. energy relea.ed to the bounda.y, i.e., the neighboring a.mosphere. The a.a.ysis of this combined cycle shows tha. it might, under proper condition, represent a.ga.n of 1.2% in the overa.l delivered engine power.

关键词：发动机工作热力循环能量转换汽轮机发动机功率循环使用联合循环转换率

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Pressure Va.ia.ion in the Fluid inside a.Tesla.Turbine

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Journa. of Energy a.d Power Engineering 2011年第6期5卷 525-527页

作者： D. Ba.tos-Netto, S. cardoso H.S. Couto VSE Va.e Soluqoes em Energia.S.a.Pa.que Tecnol6gico Rodovia Presidente Dutra km 138 Sao Jose dos Campos 12247-004 SPBrazil

The recent technologica. developments being a.plied to Tesla.like turbines for converting fluid energy into mecha.ica. (a.is) energy often lea. to non-frequently used models. Given a.disk sha.ed ma.hine rota.ing a.ound its own symmetry a.is, pa.t of the ma.hine energy is tra.sferred to the fluid itself, pushing it to the disk periphery. This wa. the fa.ther the exha.st orifice is from the disk outside contour, the la.ger will be the pressure loss experienced by the system. This work studies the overa.l energy ba.a.ce a.d momentum excha.ge between fluid a.d ma.hine. Simple ca.cula.ion shows tha. for tota. pressure gra.ients a.ove two ba. the ma.hines become inefficient for ha.ing ta.gentia. velocity whose intensity is 50% higher tha. the intensity of the jet velocity prior to the intera.tion. For va.ues of the pressure gra.ient a.ove 5.7 ba., the ma.hine periphera. velocity is equa. to the incident jet velocity. In this ca.e it is not possible to deliver power under perma.ent regime. Fina.ly it is shown tha. when the feeding pressure of a. impulse turbine is enough for more tha. one sta.e, then one should use this option to obta.n therma. efficiencies simila. to those of rea.tion ma.hines. The jet of fluid to move a.Tesla.like turbine should enter the unit a. close a. possible to the direction ta.gentia. to the movement, (i. e., norma. to the ra.ius a. the considered position). This fluid should lea.e the ma.hine right a.ter intera.ting with it. a.y perma.ence of the fluid a.ter tra.sferring its momentum to the ma.hine ca. be extremely prejudicia. to the system beha.ior.

关键词：压力变化特斯拉流体涡轮冲击式水轮机切向速度压力梯度射流速度

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