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Search Results: 1 - 10 of 19598 matches for " Ricardo Lent "
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Energy–QoS Trade-Offs in Mobile Service Selection
Erol Gelenbe,Ricardo Lent
Future Internet , 2013, DOI: 10.3390/fi5020128
Abstract: An attractive advantage of mobile networks is that their users can gain easy access to different services. In some cases, equivalent services could be fulfilled by different providers, which brings the question of how to rationally select the best provider among all possibilities. In this paper, we investigate an answer to this question from both quality-of-service (QoS) and energy perspectives by formulating an optimisation problem. We illustrate the theoretical results with examples from experimental measurements of the resulting energy and performance.
Microtriatoma pratai sherlock & Guitton, 1982 é sin?nimo do Hemíptero predador Aradomorpha Championi Lent & Wygodzinsky, 1944 (Reduviidae, Reduviidae): notas
Lent, Herman;
Memórias do Instituto Oswaldo Cruz , 1982, DOI: 10.1590/S0074-02761982000400013
Abstract: microtriatoma pratai sherlock & guitton, 1982 is not a species of this genus of the subfamily triatominae. it is not hematophagous. i identify it as aradomorpha championi lent & wygodzinsky, 1944, a predator insect of the subfamily reduviidae.
Frequent injuries in adolescent athletes
Turk Pediatri Ar?ivi , 2011,
Abstract: As a result of the decrease in the age of starting doing sports and competition, the frequency and the variety of the athletic injuries in the childhood and adolescence have increased. The results of the similar traumas in the adulthood and adolescence are different from each other. While the rapid anatomic development and growing-up in adolescence affects the performance in a negative manner, it also increases the risks of the athletic injuries. In adolescence the frequency of both, microtraumatic overuse and uni-traumatic (in-or extrinsic) injuries are similar. The athletic injuries are closely related to the executed discipline. The apophysitis’, ligament injuries, stress fractures, tendonitis, ostheochondral injuries, syndesmosis injuries, avulsion fractures, impingement syndromes and spondylolyses are the mostly experienced ones. (Turk Arch Ped 2011; 46 Suppl: 43-5)
Evolu o dos conhecimentos sobre vetores da doen a de Chagas 90 anos após sua descoberta
Lent Herman
Memórias do Instituto Oswaldo Cruz , 1999,
Position Estimation of Robotic Mobile Nodes in Wireless Testbed using GENI
Ahmed Abdelhadi,Felipe Rechia,Arvind Narayanan,Thiago Teixeira,Ricardo Lent,Driss Benhaddou,Hyunwoo Lee,T. Charles Clancy
Computer Science , 2015,
Abstract: We present a low complexity experimental RF-based indoor localization system based on the collection and processing of WiFi RSSI signals and processing using a RSS-based multi-lateration algorithm to determine a robotic mobile node's location. We use a real indoor wireless testbed called w-iLab.t that is deployed in Zwijnaarde, Ghent, Belgium. One of the unique attributes of this testbed is that it provides tools and interfaces using Global Environment for Network Innovations (GENI) project to easily create reproducible wireless network experiments in a controlled environment. We provide a low complexity algorithm to estimate the location of the mobile robots in the indoor environment. In addition, we provide a comparison between some of our collected measurements with their corresponding location estimation and the actual robot location. The comparison shows an accuracy between 0.65 and 5 meters.
A Search on Two-Electron Atoms  [PDF]
Mustafa ?apak,lent G?nül
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.29127
Abstract: Using the basic ingredient of two-body problem, we propose accurate algebraic solutions in a closed form for the ground state of helium and helium-like atoms. These simple but explicit expressions involve exact screening parameters for each system considered and provide an insight into their physical structure. The energy eigenvalues have been exactly calculated for atoms with nuclear charge Z in the range 1 ≤ Z ≤ 12, clarifying the relation between the screening parameteter and Z.
The Performance of the Higher-Order Radiation Condition Method for the Penetrable Cylinder
lent Y lmaz
Mathematical Problems in Engineering , 2007, DOI: 10.1155/2007/17605
Abstract: We have considered the scattering of a plane wave by a penetrable acoustic circular cylinder. The boundary conditions are continuity of the total pressure and the total velocity. The wave speed and density of the target are different from that of the surrounding medium. We investigated the performance of higher-order SRCs up to L4 operator in two dimensions. We assume that in the rectangular Cartesian system of axes, (x,y,z), the z axis coincides with the axis of the cylinder and an incident wave propagates in a direction perpendicular to the z axis. All the field quantities are then independent of z. Numerical results are added to present the change of the module of the total field and the magnitude of the far field with respect to θ.
A genitália externa dos machos de sete espécies de Triatoma Laporte, 1832 da regi?o Neártica (Hemiptera, Reduviidae, Triatominae)
Lent, Herman;Jurberg, José;
Memórias do Instituto Oswaldo Cruz , 1987, DOI: 10.1590/S0074-02761987000200011
Abstract: seven species from the neartic region, triatoma barberi usinger, 1939; t. rubida (uhler, 1894); t. gerstaeckeri (stal, 1859); t. lecticularia (stal, 1859); t. protracta (uhler, 1894); t. recurva (stal, 1868) and t. sanguisuga (leconte, 1855) were comparatively analysed with emphasis on the genital structures of the male bug: the phallosome (ph), the phallosome struts (sph), the endosoma process (pren), the vesica (v) and the articulatory apparatus (apb). the phallic structures were useful as a supplementary morphological criterion to the present taxonomical standards. these wild species are found naturally infected by trypanosoma cruzi in the united states and mexico. some of them live outside human dwellings while other are occasionally domiciliary, although they do not colonize these homes.
Estudo comparativo da genitália externa masculina de Linshcosteus costalis ghauri e L. Kali Lent & Wygodzinsky (Hemiptera, Reduviidae, Triatominae)
Lent, Herman;Jurberg, José;
Memórias do Instituto Oswaldo Cruz , 1983, DOI: 10.1590/S0074-02761983000400005
Abstract: the study of the male genitália of two from the five known species of the oriental genus linshcosteus distant -: l. costalis ghauri e l. kali lent & wygodzinsky -, with emphasis on the comparative aspects of the five structures which have shown more differences. the general aspects of these genitalia follow what the authors had observed in previous works published for the other genera of the tribe triatomini, subfamily triatominae. the external morphology, which characterizes the genus, is peculiar, because of the short length of the rostrum which only reaches or approaches the posterior level of the eyes, when observed by profile and rest position, besides not existing a stridulatory prosternal sulcus too.
A genitália externa na tribo Bolboderini (Hemiptera, Reduviidae, Triatominae)
Lent, Herman;Jurberg, José;
Memórias do Instituto Oswaldo Cruz , 1984, DOI: 10.1590/S0074-02761984000100001
Abstract: seven species of the bolboderini tribe belonging to the genera bolbodera, belminus, microtriatoma and parabelminus, two of them found naturally infected with trypanosoma cruzi, were analysed and compared emphasizing eight structures of the male external genitalia: median process of pygophore (prp), conjunctiva process (prcj), pedicel (ep1b), endosoma process (pren), struts (sph), phallosoma (ph), medium bridge (prg) and vesica (v). microtriatoma trinidadensis (lent, 1951) and m. borbai lent & wygodzinsky, 1979 have shown a structural morphological aspect similar to parabelminus yurupucu lent & wygodzinsky, 1979 and p. carioca lent, 1943 differing clearly from belminus peruvianus herrer, lent & wygodzinsky, 1954, b. herreri lent & wygodzinsky, 1979 and bolbodera scabrosa valdés, 1910, not only by the absence but by the shape of some structures. these comparative observations confirm the affinity between microtriatoma and parabelminus and their relations with belminus and bolbodera.
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