Academic literature on the topic 'Turbo C++'

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Journal articles on the topic "Turbo C++"

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Challab, DJ. "Turbo C++." Information and Software Technology 34, no. 9 (1992): 617–18. http://dx.doi.org/10.1016/0950-5849(92)90140-k.

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Hughes, Larry. "Teaching operating systems using Turbo C." ACM SIGCSE Bulletin 24, no. 1 (1992): 181–86. http://dx.doi.org/10.1145/135250.134547.

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Park, K.-J., and D. Jung. "External condensation heat transfer coefficients of R22 alternative refrigerants on enhanced tubes at three saturation temperatures." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 222, no. 6 (2008): 987–94. http://dx.doi.org/10.1243/09544062jmes933.

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In this study, external condensation heat transfer coefficients (HTCs) of R22, R410A, R407C, and R134a are measured on a 1024 fins per meter (26 fins per inch) low fin tube and Turbo-C tube at saturation temperatures of 30, 39, and 50 °C with wall subcooling of 3–8 °C. Test results show that condensation HTCs of all refrigerants decrease as the saturation temperature increases from 30 to 50 °C. This trend is due to the degradation of thermophysical properties of the liquid phase with an increase in saturation temperature. For the low fin tube data, Beatty and Katz's prediction equation showed a reasonably good agreement for all fluids with less than 20 per cent deviation. The performance of Turbo-C tube is better than that of the low fin tube for R22, R410A, and R134a due to the efficient removal of the condensate. For Turbo-C tube, HTCs of R407C were much lower than those of the other three fluids due to a unique condensation phenomenon associated with non-azeotropic mixtures at vapour—liquid interface. The average heat transfer enhancement ratios for the low fin tube and Turbo-C tube against the plain tube are 4.0–5.5 and 3.0–8.1, respectively, for all refrigerants tested.
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Poljak, Igor, Ivica Glavan, Josip Orović, and Vedran Mrzljak. "Three Approaches to Low-Duty Turbo Compressor Efficiency Exploitation Evaluation." Applied Sciences 10, no. 10 (2020): 3373. http://dx.doi.org/10.3390/app10103373.

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This paper presents three approaches for isentropic, energy, and exergy evaluations of a low-duty liquid natural gas (LNG) vapor turbo compressor during exploitation on a conventional LNG carrier. The evaluation was conducted on the measured performance parameters under 22 various turbo compressor operating regimes. The turbo compressor performance was evaluated in the temperature span from −69 to −105 °C and during changes in the rpm of the main propulsion turbine and, consequently, the main boiler load. The results show that the highest measured turbo compressor isentropic efficiency is in agreement with the manufacturer specifications, equaling 75.23% at a main propulsion turbine rpm of 53.5. At the highest measured loads and rpm, the turbo compressor energy and exergy efficiencies reach the highest values of 57.81% and 28.51%, respectively. In each observed operating regime, the influence of the ambient temperature change on the turbo compressor exergy efficiency was investigated. At the lowest and the highest measured loads, turbo compressor energy and exergy flow streams are presented in a Sankey diagram. Techniques for cargo temperature maintenance during the ship voyage are presented, as the results show that low suction gas temperatures influence turbo compressor efficiency.
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Lim, G. H. "Vibratory feeder motion study using Turbo C++ language." Advances in Engineering Software 18, no. 1 (1993): 53–59. http://dx.doi.org/10.1016/0965-9978(93)90007-g.

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Velásquez Rodríguez, Claudia María, and Juliana María Orozco Cano. "Dislipidemia en niños con desnutrición aguda. Turbo, Colombia." Perspectivas en Nutrición Humana 14, no. 2 (2013): 157–70. http://dx.doi.org/10.17533/udea.penh.16486.

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Objetivo: comparar el perfil lipídico de niños menores de 5 años con desnutrición aguda con ungrupo control. Metodología: estudio descriptivo, de corte transversal, en 43 niños, 26 con desnutriciónaguda y 17 con adecuado peso para la talla (P/T). Entre los grupos de estudio secompararon las concentraciones séricas de CT, c-LDL, c-HDL y TG. Resultados: el grupo condesnutrición presentó una frecuencia significativamente mayor de c-HDL bajas comparados concontroles (19 vs 7% respectivamente, p=0,036) y un riesgo 1,8 veces mayor de c-HDL bajas(OR=1,8; IC 0,960-3,280). Los TG fueron mayores en los desnutridos, pero sin diferencia significativacon los controles. Las concentraciones de CT, c-LDL y c-HDL disminuyeron significativamentea medida que aumentó el grado de desnutrición, mientras que los TG aumentaronpero no significativamente; en los niños con desnutrición grave el índice arterial TG/c-HDL fuesignificativamente mayor que en los moderados y en los controles. Los niños con kwashiorkor presentaron las concentraciones más bajas de CT, c-LDL y c-HDL, las más altas de TG y elmayor índice arterial. Conclusiones: los niños con desnutrición aguda grave, especialmente tipo kwashiorkor, presentan concentraciones más bajas de c-HDL y más altas de TG, con un índicearterial alto que los expone a desarrollar ateroesclerosis.
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Ferreira Lima, João Vicente, Issam Raïs, Laurent Lefèvre, and Thierry Gautier. "Performance and energy analysis of OpenMP runtime systems with dense linear algebra algorithms." International Journal of High Performance Computing Applications 33, no. 3 (2018): 431–43. http://dx.doi.org/10.1177/1094342018792079.

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In this article, we analyze performance and energy consumption of five OpenMP runtime systems over a non-uniform memory access (NUMA) platform. We also selected three CPU-level optimizations or techniques to evaluate their impact on the runtime systems: processors features Turbo Boost and C-States, and CPU Dynamic Voltage and Frequency Scaling through Linux CPUFreq governors. We present an experimental study to characterize OpenMP runtime systems on the three main kernels in dense linear algebra algorithms (Cholesky, LU, and QR) in terms of performance and energy consumption. Our experimental results suggest that OpenMP runtime systems can be considered as a new energy leverage, and Turbo Boost, as well as C-States, impacted significantly performance and energy. CPUFreq governors had more impact with Turbo Boost disabled, since both optimizations reduced performance due to CPU thermal limits. An LU factorization with concurrent-write extension from libKOMP achieved up to 63% of performance gain and 29% of energy decrease over original PLASMA algorithm using GNU C compiler (GCC) libGOMP runtime.
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NAKAGAWA, Shin, Tomoya NAKAJIMA, Tomoaki ITANO, and Masako SUGIHARA-SEKI. "Measurements of Aerodynamic Characteristics of the Turbo-Jav." Proceedings of the Symposium on sports and human dynamics 2016 (2016): C—12. http://dx.doi.org/10.1299/jsmeshd.2016.c-12.

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Nugroho, S. D., C. Z. Pratiwi, and S. Holil. "The design of turbo jet surface aerator to enhance dissolved oxygen level in shrimp pond." IOP Conference Series: Earth and Environmental Science 1036, no. 1 (2022): 012102. http://dx.doi.org/10.1088/1755-1315/1036/1/012102.

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Abstract The dissolved oxygen (DO) is crucial water quality parameters for shrimp farming. The farmers need aerator to break water into fine drops or creating bubbles that can enhance dissolved oxygen level in the pond. Turbo jet surface aerator is the one type of aerator. This aerator works by rotating propeller which is connected by a hollow shaft to the motor. The angular adjustment that is used from the engine holder is 20°. Therefore, the propeller can rotate in half submerged position which is 4.5 cm immersion depth. This turbo jet surface aerator is designed using 0.5 HP electric motor, 7 blades, and 2 floats. The measurement result shows the turbo jet surface aerator can be used to enhance DO level up to 2.8 mg/L with the average of DO level of 6.8 mg/L. Turbo jet surface aerator can be operated properly for 168 hours nonstop with the electric motor temperature of 69°C.
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Setiyo, Muji, Sudjito Soeparman, Slamet Wahyudi, and Nurkholis Hamidi. "The Alternative Way to Drive the Automobile Air-Conditioning, Improve Performance, and Mitigate the High Temperature: A Literature Overview." Periodica Polytechnica Transportation Engineering 46, no. 1 (2017): 36. http://dx.doi.org/10.3311/pptr.8892.

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Over fuel consumption and increasing in CO2 emissions are problems as compensation from the imposition of automobile A/C systems. Another problem is the extreme temperature when the car is parked under sunlight so that the thermal load becomes very large when A/C is turned on. Therefore, this article presents various methods to overcome the problem. Methods to reduce fuel consumption and to reduce CO2 emissions are done by application of VCC and the absorption system. Potential of turbo A/C system and combining vapor compression and LPG fuel system has also been studied. Potential of turbo A/C system and combining vapor compression and LPG fuel system has also been studied. Related to the mitigating of high temperature inside the car cabin when parked under sunlight, the addition of a ventilator and portable car cooling system is a promising option.
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Dissertations / Theses on the topic "Turbo C++"

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Turner, Edward Joseph. "Measurement Drift in 3-Hole Yaw Pressure Probes From 5 Micron Sand Fouling at 1050° C." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/96811.

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3-hole pressure probes are capable of accurately measuring flow angles in the yaw plane. These probes can be utilized inside a jet engine hot section for diagnostics and flow characterization. Sand and other particulate pose a significant risk to hot section components and measurement devices in gas turbine engines. The objective of this experiment was to develop a better understanding of the sensitivity of experimental 3-hole pressure probe designs to engine realistic sand fouling. In this study, Wedge, Cylindrical, and Trapezoidal probes were exposed to realistic hot section turbine environments of 1050 C at 65-70 m/s. 0-5 micron Arizona Road Dust(ARD) is heated under these conditions and used to foul the yaw probes. The sand deposited on the probe was observed to peel off the probe in thin sheets during ambient cool down. Sand fouling was assessed using a stereoscope and digital camera. Probe calibrations were performed in an ambient temperature, open air, calibration jet to mimic engine cold start conditions at Mach numbers of 0.3 and 0.5. Yaw coefficients were calculated for each probe using probe pressure and jet dynamic pressure readings. These coefficients were used to develop calibration curves for each probe initially, and again for every fouling test. Each probe performed differently, but the trends showed that the sand fouling had little impact on the probe error at Mach 0.3, and a slightly increased effect on the probe error at Mach 0.5. The experiment showed that when flow direction was determined using a true dynamic pressure reading from the jet, the probes were able to accurately measure flow direction even after being significantly sanded, some probes holes being over 50% blocked by sand accumulation. Accelerated erosion testing showed that the trapezoidal yaw probe was by far the most sensitive to sand accumulation, followed by the cylindrical probes, and the least sensitive was the wedge probe. A yaw angle range of interest was chosen to ±10 deg of yaw. The least errors from the Yaw Coefficient, as defined in this report, were found to be in the Trapezoidal and Perpendicular probe configurations. The least error found in the wedge probe.<br>MS
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Gazi, Orhan. "Parallelized Architectures For Low Latency Turbo Structures." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608110/index.pdf.

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In this thesis, we present low latency general concatenated code structures suitable for parallel processing. We propose parallel decodable serially concatenated codes (PDSCCs) which is a general structure to construct many variants of serially concatenated codes. Using this most general structure we derive parallel decodable serially concatenated convolutional codes (PDSCCCs). Convolutional product codes which are instances of PDSCCCs are studied in detail. PDSCCCs have much less decoding latency and show almost the same performance compared to classical serially concatenated convolutional codes. Using the same idea, we propose parallel decodable turbo codes (PDTCs) which represent a general structure to construct parallel concatenated codes. PDTCs have much less latency compared to classical turbo codes and they both achieve similar performance. We extend the approach proposed for the construction of parallel decodable concatenated codes to trellis coded modulation, turbo channel equalization, and space time trellis codes and show that low latency systems can be constructed using the same idea. Parallel decoding operation introduces new problems in implementation. One such problem is memory collision which occurs when multiple decoder units attempt accessing the same memory device. We propose novel interleaver structures which prevent the memory collision problem while achieving performance close to other interleavers.
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Olsen, Donald P. "PROPOSED NEW WAVEFORM CONCEPT FOR BANDWIDTH AND POWER EFFICIENT TT&C." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/608730.

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International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>Most traditional approaches to TT&C have employed waveforms that are neither very power nor bandwidth efficient. A new approach to TT&C waveforms greatly improves these efficiencies. Binary Gaussian Minimum Shift Keying (GMSK) provides a constant envelope bandwidth efficient signal for applications above about 10 Kbps. The constant envelope preserves the spectrum through saturated amplifiers. It provides the best power efficiency when used with turbo coding. For protection against various kinds of burst errors it includes the hybrid interleaving for memory and delay efficiency and packet compatible operations in Time Division Multiple Access (TDMA) environments. Commanding, telemetry, mission data transmission, and tracking are multiplexed in TDMA format.
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Abdullah, Nuruddin S. "The design of a PC software package to determine speed, skidding time, skidding distance and drag factor of vehicles implemented in turbo C for MS-DOS V 5.0." Ohio University / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1176494304.

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Sousa, Aline Farias Gomes de. "Enumera??o de espectro de dist?ncias de esquemas de modula??o codificada em treli?a empregando codifica??o turbo." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15321.

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Made available in DSpace on 2014-12-17T14:55:43Z (GMT). No. of bitstreams: 1 AlineFGS_DISSERT.pdf: 1151209 bytes, checksum: 4ae192dd7519e3e14977154f7b70d951 (MD5) Previous issue date: 2010-06-14<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>In this work, a performance analysis of transmission schemes employing turbo trellis coded modulation. In general, the performance analysis of such schemes is guided by evaluating the error probability of these schemes. The exact evaluation of this probability is very complex and inefficient from the computational point of view, a widely used alternative is the use of union bound of error probability, because of its easy implementation and computational produce bounds that converge quickly. Since it is the union bound, it should use to expurge some elements of distance spectrum to obtain a tight bound. The main contribution of this work is that the listing proposal is carried out from the puncturing at the level of symbol rather than bit-level as in most works of literature. The main reason for using the symbol level puncturing lies in the fact that the enummerating function of the turbo scheme is obtained directly from complex sequences of signals through the trellis and not indirectly from the binary sequences that require further binary to complex mapping, as proposed by previous works. Thus, algorithms can be applied through matrix from the adjacency matrix, which is obtained by calculating the distances of the complex sequences of the trellis. This work also presents two matrix algorithms for state reduction and the evaluation of the transfer function of this. The results presented in comparisons of the bounds obtained using the proposed technique with some turbo codes of the literature corroborate the proposition of this paper that the expurgated bounds obtained are quite tight and matrix algorithms are easily implemented in any programming software language<br>Neste trabalho ? feita uma an?lise de desempenho de esquemas de transmiss?o empregando modula??o codificada turbo em treli?a. Em geral, a an?lise de desempenho de tais esquemas ? guiada pelo c?lculo da probabilidade de erro destes esquemas. O c?lculo exato desta probabilidade ? muito complexo e ineficiente sob o ponto de vista computacional, uma alternativa muito utilizada ? o emprego de limitante da uni?o da probabilidade de erro, por ser de f?cil implementa??o computacional e produzir limitantes que convergem rapidamente. Por se tratar do limitante da uni?o, este deve utilizar de expurgo de alguns elementos do espectro de dist?ncias do c?digo para a obten??o de um limitante apertado. A principal contribui??o deste trabalho ? que a enumera??o proposta ? realizada a partir da perfura??o a n?vel de s?mbolo e n?o a n?vel de bit como na maioria dos trabalhos da literatura. O principal motivo do uso da perfura??o a n?vel de s?mbolo reside no fato que a fun??o enumeradora do esquema turbo ? obtida diretamente das seq??ncias complexas de sinais atrav?s da treli?a e n?o de forma indireta a partir da seq??ncias bin?rias que exigem posterior mapeando bin?rio para complexo, como proposto por trabalhos anteriores. Assim, podem ser aplicados algoritmos completamente matriciais a partir da matriz adjac?ncia, que ? obtida a partir do c?lculo das dist?ncias das seq??ncias complexas da treli?a e n?o das seq??ncias bin?rias. Neste trabalho tamb?m s?o apresentados dois algoritmos matriciais de redu??o de estados do codificador bem como do c?lculo da fun??o de transfer?ncia deste. Os resultados apresentados em forma de compara??es dos limitantes obtidos utilizando a t?cnica proposta com alguns c?digos turbo da literatura corroboram com a proposi??o deste trabalho que os limitantes expurgados obtidos s?o apertados e os algoritmos completamente matriciais s?o facilmente implementados em qualquer software de programa??o simb?lica
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Becker, Celso Goncalves. "Otite média com efusão: estudo comparativo da eficácia da inserção do tubo de ventilação versus aplicação tópica de mitomicina C, após timpanotomia e aspiração da efusão." Universidade Federal de Minas Gerais, 2003. http://hdl.handle.net/1843/BUOS-9MPG9Q.

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A otite média com efusão constitui enfermidade de alta prevalência na população pediátrica. A disfunção da tuba auditiva é o principal fator etiológico por promover hipoventilação da orelha média, metaplasia do epitélio da cavidade timpânica e incremento de células caliciformes. A inserção de tubo de ventilação na membrana timpânica é o tratamento cirúrgico de eleição, substituindo temporariamente a função tubária, com grande eficácia na melhora auditiva e na prevenção de recorrências. No entanto, a inserção do tubo de ventilação não é isenta de complicações, além de promover prolongada limitação social pela proibição dos banhos de imersão, em especial, da prática da natação. A timpanotomia, com a aspiração da efusão e sem a inserção do tubo, se fecha em poucos dias, devido à rápida cicatrização da membrana timpânica, não permitindo a reversão da metaplasia, com novo acúmulo da efusão. A mitomicina C é um antineoblástico com efeito antiproliferativo sobre os fibroblastos. Sua aplicação tópica retarda a fibrose e prevene a estenose cicatricial. Em cobaias, a mitomicina C foi eficaz em retardar o fechamento de timpanotomias, permitindo maior tempo de aeração da orelha média, à semelhança do que ocorre com os tubos de ventilação. O objetivo deste estudo foi comparar, através de estudo prospectivo e aqleatório, a eficácia no tratamento cirúrgico da otite média com efusão observada por dois diferentes procedimentos cirúrgicos, a timpanotomia, aspiração da efusão e inserção de tubo de ventilação, em 30 pacientes (grupo TV) e a timpanotomia, aspiração da efusão e aplicação tópica de mitomicina C, em 25 pacientes (grupo MMC). Os fatores de risco para otites e os dados do exame otorrinolaringológico préoperatório foram correlacionados com o resultado final observado na orelha média. Foram também avaliados o tempo de manutenção da timpanotomia e a incidência de complicações nos dois grupos estudados. O grupo MMC apresentou eficácia significativamente menor que o grupo TV no tratamento da efusão na população estudada (p= 0,028; OR= 0,271; IC= 0,082 0,890). Nenhum dos fatores de risco para otite média apresentou associação significativa com o resultado final observado na orelha média. A presença de curva timpanométrica tipo B e a ausência de comprometimento do óstio faríngeo da tuba auditiva pelo tecido adenóide no pré-operatório representaram fatores de mau prognóstico significativo para o resultado final alterado na orelha média, após seis meses de seguimento, em relação à curva tipo C e à presença de comprometimento tubário, respectivamente. A aplicação tópica de mitomicina C na concentração de 0,5 mg/mL, por cinco minutos, nas bordas da timpanotomia, proporcionou um tempo de abertura da membrana timpânica de duas a três semanas. Nenhum dos pacientes do grupo MMC apresentou complicações, enquanto, no grupo TV, a otorréia e a timpanosclerose foram observadas, respectivamente, em 13,3% e 16,7% das membranas timpânicas. O grupo MMC mostrou menor eficácia na resolução da efusão, porém não trouxe complicações, nem promoveu limitação social como a proibição dos banhos de imersão. Novos estudos com maior concentração, maior tempo de aplicação ou aplicação seriada de MMC no tratamento da otite média com efusão, deveriam ser realizados.
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Lee, Chia-Yu, and 李佳侑. "High Voltage Buck-Boost DC-DC Converter for Universal Serial Bus Type-C and Turbo Boost Technology." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/hxkhmw.

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碩士<br>國立交通大學<br>電機工程學系<br>105<br>Recently, the latest Universal Serial Bus type-C connecter not only can transfer data but also deliver power. As mentioned in USB Power Delivery Specification Release 2.0 Version 1.2, USB type-C can deliver power ranged from 0.5W (100mA at 5V) to 100W (5A at 20V). In order to support such input range, the converter must be able to endure up 20V of input voltage. Also, the converter is required to support the latest Intel® turbo boost technology. Turbo boost technology, discussed in an Intel® November 2008 Whit paper, can enable the CPU to run above its base operation frequency in order to draw out more performance when some cores aren’t operating at maximum speed. In the meantime, the processor requires more power to perform at higher speed. Therefore, the DC-DC converter must be able to deliver high power to CPU cores as well. Combining the two condition, the DC-DC converter we need should be able to receive a wide variety of input voltage (5V to 20V) as well as deliver a large power when the CPU need it. Therefore, a buck-boost converter that can step-up and step-down is most suitable. The thesis proposed a current mode buck-boost converter in order to simplify the compensation circuit and have good load regulation at buck/boost mode. However, the current sensing design as well as slope compensation is limited in high voltage condition. In this thesis, we will further discuss high voltage circuit design. The converter this thesis proposed can withstand input/output voltage ranged from 5V to 20V and can transfer 60W maximum power. The load current is up to 6A at buck mode. Only buck mode and boost mode are implemented in order to reduce loss while input and output are at the same voltage. A high voltage current sensing circuit as well as a dynamic slope compensation circuit is implemented. The chip is fabricated with Magna 0.18um process and operated at 1MHz switching frequency.
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Books on the topic "Turbo C++"

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Perry, Greg M. Turbo C. Sams Publ, 1994.

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LeBlanc, Gérard. Turbo C. 4th ed. Eyrolles, 1989.

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International, Borland. Turbo C++. Borland International, 1990.

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Prokof'ev, B. P. Graficheskie sredstva Turbo c i Turbo C++. "Finansy I Statistika", Sp "Lanit", 1992.

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Schildt, Herbert. Using Turbo C. McGraw, 1987.

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Schildt, Herbert. Using Turbo C++. Osborne McGraw-Hill, 1990.

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Wang, Wally. Illustrated Turbo C++. Wordware Pub., 1991.

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Voss, Greg. Turbo C++ DiskTutor. 2nd ed. Osborne McGraw-Hill, 1991.

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Knecht, Ken. Advanced Turbo C. Scott, Foresman, 1989.

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Leventhal, Lance A. Turbo C quickstart. Microtrend Books, 1992.

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Book chapters on the topic "Turbo C++"

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Herrmann, Dietmar. "Der Turbo C-Compiler." In Effektiv Programmieren in C. Vieweg+Teubner Verlag, 1989. http://dx.doi.org/10.1007/978-3-322-83933-6_18.

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Herrmann, Dietmar. "Der Turbo C-Compiler." In Effektiv Programmieren in C. Vieweg+Teubner Verlag, 1991. http://dx.doi.org/10.1007/978-3-663-14170-9_18.

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Mockus, Jonas. "Turbo C Version (TCGM)." In Applied Optimization. Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4671-9_5.

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Aupperle, Martin. "Die C++ Sprache." In Objektorientiert mit TURBO C++. Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-93857-2_2.

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Aupperle, Martin. "C++ Teil 2." In Objektorientiert mit TURBO C++. Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-93857-2_5.

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Aupperle, Martin. "C++ Teil 1 (Klassen)." In Objektorientiert mit TURBO C++. Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-93857-2_3.

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Aupperle, Martin. "Warum objektorientierte Programmierung ?" In Objektorientiert mit TURBO C++. Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-93857-2_1.

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Aupperle, Martin. "Virtuelle Funktionen." In Objektorientiert mit TURBO C++. Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-93857-2_10.

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Aupperle, Martin. "Polymorphismus: Zwei Fallstudien." In Objektorientiert mit TURBO C++. Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-93857-2_11.

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Aupperle, Martin. "Streams." In Objektorientiert mit TURBO C++. Vieweg+Teubner Verlag, 1992. http://dx.doi.org/10.1007/978-3-322-93857-2_12.

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Conference papers on the topic "Turbo C++"

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Hughes, Larry. "Teaching operating systems using Turbo C." In the twenty-third SIGCSE technical symposium. ACM Press, 1992. http://dx.doi.org/10.1145/134510.134547.

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Taylor, Alexander H., Pavan Naik, Simon Nibler, and Nisar Al-Hasan. "Optimization of Variable Geometry Turbine Electric Turbocharger for a Heavy-Duty, On-Highway Fuel Cell." In ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-101224.

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Abstract An air compressor is a necessary component on fuel cell electric generators as fuel cells do not pull in air without an external intervention. There are many fuel cell air compression options, each with their own benefits and drawbacks, such as roots-style screw compressors, radial e-compressors, e-turbos with wastegate, and e-turbos with a variable geometry turbine (VTG). Turbocharger turbine wheels for internal combustion engine applications are optimized to maximize exhaust gas enthalpy extraction while limiting centrifugal forces in the blades. In the presence of high temperature exhaust gas, 950–1050° C for gasoline engines, material strength decreases, elasticity increases, and thus induced stresses must be reduced to prevent turbine failure or contact with the turbine housing. The proton exchange membrane fuel cell (PEMFC) exhaust gas temperature is significantly lower, in the range of 85–90° C, which enables more degrees of freedom in the design and thereby a higher thermodynamic efficiency of the turbine. This work proposes a variable geometry turbine specifically for the fuel cell environment, and compares system performance through 1-D simulations at a lower-power road load and rated power point, to i) baseline electric compressor (e-compressor), ii) electric turbo (e-turbo) with wastegate turbine, &amp; iii) e-turbo with VTG designed for an IC engine environment. The VTG turbine optimized for fuel cell enthalpy harvesting has 13%-points higher efficiency at rated power compared to that of a typical ICE VTG, a relative increase of 23%. This study finds an optimized VTG e-turbo improves PEMFC efficiency at rated power by 3%, or 1.5%-points, compared to the e-compressor without a turbine.
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Walker, Megan, and Xiao Huang. "Isothermal Oxidation of René N5 at 1150°C." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75078.

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In this study, single crystal superalloy René N5 was exposed in air at 1150 °C for up to 16 hours to evaluate the alloy’s short-term oxidation behaviour and the potential for developing a no-bond coat TBC system. The results showed that after 1 hour of exposure, a three layered oxide developed on the surface, consisting of spinel, Ta-containing oxide and alumina just above the substrate. After 4 hours of exposure, oxide spallation occurred; this became more pronounced after 16 hours. The oxide spallation took place between the top spinel layer and alumina layer, where Ta-rich oxide was more abundant. All samples tested for 0.5, 1, 2, 4 and 16 hours developed alumina near the substrate while the occurrence of NiO, spinel and Ta-oxides varied, depending upon the exposure time.
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Chen, Hua, Yuchao Song, Aiguo Gu, Yangfang Zhang, and Hongwei Li. "Turbocharger Turbine Rotor Design for Low U/C Values." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90070.

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Abstract Emission regulations worldwide demand better low-end torque from internal combustion engines. This pushes the operating condition of turbocharger turbine to lower U/C values, where U is the blade tip speed and C is the turbine isentropic spouting velocity which increases with turbine expansion ratio. Traditional radial and some mixed flow turbines, dictated by their rotor design, have their efficiency peaks at U/C value around 0.70, a value considerably larger than desired. In this paper, we deliberate the measures to shift the peak efficiency of turbine rotor toward a lower U/C value than 0.7. The underlying physics of these measures are first explained, CFD and test results where available are then given. Implications to mechanical design, manufacturing and others are also discussed. Finally, an example of a turbine rotor design is given implementing these measures. Test results showed better efficiency was obtained from the design at lower U/C values than from the baseline.
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Boestaman, Refrizal, V. P. Swaminathan, and H. L. Bernstein. "Protective Coatings and Degradation Experiences for First Stage Buckets on GE MS-5002B/C Gas Turbines." In ASME 1996 Turbo Asia Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-ta-032.

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PT Arun operates 21 GE Model MS-5002 B/C gas turbines as mechanical drive with a total power of 514 MW, and a total of 2.7 million hours of accumulated operation. The first generations of simple cycle gas turbines were designed at 1700 F (927 C) firing temperature using first stage buckets design cast from IN-738LC and coated with a conventional 2-phase platinum aluminide coating (Pt-Al). Since 1989, the output power was increased by raising gas turbine firing temperature to 1770 F (965 C). This uprate was implemented by using first stage buckets cast from GTD-111 DS and coated with GT-29 Plus. Metallurgical examination of these coatings at various operating hours have been performed to check their performance and the cause of coating degradation. These results are considered for future coating selection. In the last two years PT Arun has explored a new single phase NiCoCrAlY coating and a single phase Pt-Al diffusion coating using chemical vapor disposition process as an alternate to GT-29 plus coating replacement. Both of these coatings are used at PT Arun and have accumulated 32,400 hours for NiCoCrAlY or GT-33 and 2880 hours for single phase Pt-Al or MDC-150L coating as of June 1996. The information regarding qualification of these alternate coatings (zero running hours) will be discussed in this paper.
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Cheng, W. Y., Y. Z. Robert Hu, and C. C. Wang. "Film Condensation of R-22 and R-410A on Horizontal Enhanced Tubes." In ASME 1997 Turbo Asia Conference. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/97-aa-032.

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This study experimentally investigates the film condensation of R-22 and R-410A on two horizontal enhanced tubes. The test tubes include a GEWA-C and a GEWA-TWX. Data was measured at three different saturation temperatures (35°C, 40°C and 45°C) in accordance with the range of practical condensation conditions in the air-conditioning and refrigeration applications. Average heat transfer coefficients were determined by overall heat transfer coefficients based on energy balance. The comparisons of heat transfer coefficients between R-22 and R-410A for both test tubes were presented.
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Boulanger, Andrew, John Hutchinson, Wing F. Ng, et al. "Experimental Based Empirical Model of the Initial Onset of Sand Deposits on Hastelloy-X From 1000°C to 1100°C Using Particle Tracking." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64480.

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Deposition experiments are performed on a Hastelloy-X coupon using Arizona Road Test Dust (ARD). A statistical empirical model of the initial onset of ARD deposits is developed from the experimental data. The initial onset of deposits are a quadratic function of local surface temperature and impact velocity components (normal and tangential). A prominent observation is that tangential impact velocity has a significant non-linear, independent effect on deposits relative to normal impact velocity and local surface temperatures. All experiments use 20–40 μm ARD on a bare metal surface over a 1000–1100°C range. Unlike prior mass-based deposit studies, initial deposits for this study are quantified using a Coverage Ratio (CR), which is the area covered by deposits relative to the total area available. The empirical CR model has a strong correlation to coupon surface temperature and impact velocity vectors and is a foundation for future numerical or experimental model comparisons.
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Wei, Wei, Weilin Zhuge, Yangjun Zhang, and Yongsheng He. "Comparative Study on Electric Turbo-Compounding Systems for Gasoline Engine Exhaust Energy Recovery." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23204.

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Electric turbo-compounding system attracts more attention in recent years with the advance of electronic control devices. There are mainly three kinds of electric turbo-compounding systems for internal combustion engines: System A has an electric-assisted turbocharger, System B has a turbo-generator that is in series with the turbocharger, and System C has a turbo-generator that is in parallel with the turbocharger. A comparative study on the performance of these three kinds of systems for a 1.8L turbocharged gasoline engine is presented. The comparative study has been carried out using 1D simulation methods. The gasoline engine is modeled with the GT-POWER software and the turbochargers and turbo-generators are modeled with turbo through-flow models. The GT-DRIVE software is used to evaluate the system performance under driving cycles. The performance comparisons of different systems have been carried out under US06 and FTP75 driving cycles. Results show that the performance of System C is better than those of the other two kinds of systems. The fuel economy improvement of System C is 4.0% under US06 driving cycle and 1.6% under FTP75 driving cycle, compared with the original prototype engine.
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Hansen, Mogens Weel, and Jan Sandvig Nielsen. "Optimal Integration of Humid Air Cycle in Energy Intensive Industries." In ASME 1996 Turbo Asia Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-ta-049.

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Humid Air Turbine cycle (HAT) is characterised by its high single cycle efficiency. The HAT cycle is typically constrained by a pinch point at low temperature. This indicates that additional heat in the range 100 °C to 200 °C can be utilised with high marginal efficiency. At the same time energy intensive industries (for example refineries, Cement production plants and Steel works) typically have a surplus of heat from around 250 °C to 300 °C and down. This study is aimed at the integration of HAT Cycle into the industrial process plant where the complementary features can be exploited. The present paper has two main objectives. The first objective is to present a general approach for integration analysis. The approach is based on conceptual design using targeting procedures (e.g. Pinch Analysis). The second objective is to find an optimum integration scheme for specific heat sources available from industrial sites. To illustrate both objectives a case study based on real refinery data is discussed.
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Pint, Bruce A., Rishi Pillai, and James R. Keiser. "Effect of Supercritical CO2 on Steel Ductility at 450°-650°C." In ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/gt2021-59383.

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Abstract The compatibility of ferritic-martensitic (FM) and conventional and advanced austenitic steels with supercritical CO2 (sCO2) is being explored at 450°–650°C to determine their maximum temperature capability. In addition to measuring reaction kinetics and reaction product thickness, bulk carbon content and post-exposure room temperature tensile properties were assessed by exposing both alloy coupons and 25 mm long dogbone tensile specimens. After 1–2 kh exposures in 300 bar research grade (RG) sCO2, ∼9 and 12%Cr FM steels had similar behavior under these conditions. Consistent with the literature, higher Cr and Ni contents in alloy 316H provided lower reaction rates at 450° and 550°C, but limited benefit at 650°C with similar degradation of tensile properties and C ingress observed. An advanced austenitic Nb-modified 20Cr-25Ni alloy 709 provided the best compatibility even at 650°C with no C uptake detected after 1 kh and no significant loss in room temperature tensile properties after exposure. A clear correlation was observed under these conditions between the formation of a thin, protective Cr-rich oxide scale and the prevention of C ingress and tensile property degradation at 650°C.
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