Bibliografías temáticas / Double truck

Índice

Artículos de revistas
Tesis
Libros
Capítulos de libros
Actas de conferencias
Informes

Literatura académica sobre el tema "Double truck"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 9 de febrero de 2022

Crea una cita precisa en los estilos APA, MLA, Chicago, Harvard y otros

Elija tipo de fuente:

Consulte las listas temáticas de artículos, libros, tesis, actas de conferencias y otras fuentes académicas sobre el tema "Double truck".

Junto a cada fuente en la lista de referencias hay un botón "Agregar a la bibliografía". Pulsa este botón, y generaremos automáticamente la referencia bibliográfica para la obra elegida en el estilo de cita que necesites: APA, MLA, Harvard, Vancouver, Chicago, etc.

También puede descargar el texto completo de la publicación académica en formato pdf y leer en línea su resumen siempre que esté disponible en los metadatos.

Artículos de revistas sobre el tema "Double truck"

Sutimin, Muhamad Syafei, Didik Rilastiyo Budi, Kusnandar, Topo Suhartoyo y Panuwun Joko Nurcahyo. "Plyometric Double Leg Tuck Jump: Pengaruhnya Terhadap Power Otot Tungkai Atlet Bola Voli". SPRINTER: Jurnal Ilmu Olahraga 2, n.º 1 (9 de abril de 2021): 112–19. http://dx.doi.org/10.46838/spr.v2i1.92.

Texto completo

Resumen

Metode latihan merupakan faktor penting dalam pembinaan olahraga prestasi, pelatih dapat memaksimalkan potensi atlet apabila mampu menerapkan metode latihan dengan tepat. Metode latihan yang dapat diterapkan pada permainan bola voli yaitu bentuk latihan plyometric double leg truck jump. Tujuan dari penelitian ini yaitu untuk menganalisis perbedaan pengaruh latihan plyometric di pasir dengan di tanah terhadap peningkatan power otot tungkai atlet bola voli pelajar. Jenis penelitian ekperimen dengan desain two group pretes-postest desigen, jumlah sampel 24 orang atlet dan menggunakan instrumen penelitian vertical jumpt test. Analisis data menggunakan uji t. Hasil penelitian menunjukan terdapat pengaruh yang signifikan setelah atlet melakukan latihan plyometric double leg truck jump dengan p=0,000, terdapat perbedaan pengaruh latihan plyometric double leg truc jump di tanah dan pasir dengan p=0,000. Metode latihan plyometric double leg truck jump di pasir meningkatkan power otot tungkai lebih baik daripada latihan di tanah dengan perbedaan skor sebesar 9,4%. Sehingga direkomendasikan untuk melakukan latihan plyometric double leg truck jump di pasir untuk meningkatkan power otot tungkai atlet bola voli pelajar.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Yin, Yu Ming, Jue Yang y Wen Ming Zhang. "Handling and Roll Prediction of Electric Drive Mining Trucks". Advanced Materials Research 712-715 (junio de 2013): 1135–38. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.1135.

Texto completo

Resumen

A method is proposed to predict the handling and roll properties of electric drive mining trucks and evaluate their safety status. Trucksim is used to simulate the truck dynamics and Simulink is used to model the electric drive system, the truck model takes a double-lane change manoeuvre according to ISO 3888-1. A 190t mining truck is demonstrated and the understeer gradient and roll angle results respect its safety status well. Using this method, mining truck designers could make the handling and roll prediction before manufacture and modify their design.

Los estilos APA, Harvard, Vancouver, ISO, etc.

An, Lingshi, Feng Zhang, Yongchang Geng y Bo Lin. "Field Measurement of Dynamic Compressive Stress Response of Pavement-Subgrade Induced by Moving Heavy-Duty Trucks". Shock and Vibration 2018 (2018): 1–12. http://dx.doi.org/10.1155/2018/1956906.

Texto completo

Resumen

This paper presents the dynamic compressive stress response of pavement-subgrade induced by moving heavy-duty trucks. In order to study the distribution characteristic of dynamic pressure of pavement-subgrade in more detail, truck loadings, truck speeds, and dynamic pressure distributions at different depths were monitored under twenty-five working conditions on the section of Qiqihar-Nenjiang Highway in Heilongjiang Province, China. The effects of truck loading, truck speed, and depth on dynamic compressive stress response can be concluded as follows: (1) increasing truck loading will increase the dynamic pressure amplitude of subgrade-pavement and dominant frequencies are close to the characteristic frequencies caused by heavy-duty trucks at the speed of 70 km/h; (2) as truck speed increases, the dynamic pressure amplitudes of measuring points have an increasing tendency; the dynamic pressure spectrums are also significantly influenced by truck speed: the higher the truck speed, the wider the spectrum and the higher the dominant frequencies; (3) as depth increases, the dynamic pressure amplitudes of measuring points decrease rapidly. The influence of the front axle decreases gradually until disappearing and the compressive stress superposition phenomenon caused by rear double axles can be found with increasing depth.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Regehr, Jonathan D., Jeannette Montufar y Garreth Rempel. "Safety performance of longer combination vehicles relative to other articulated trucks". Canadian Journal of Civil Engineering 36, n.º 1 (enero de 2009): 40–49. http://dx.doi.org/10.1139/l08-109.

Texto completo

Resumen

This article helps improve the understanding about the safety performance of longer combination vehicles (LCVs) relative to other articulated trucks operating on rural highways, using evidence from the Canadian portion of the CANAMEX trade corridor. The analysis reveals that from a collision rate perspective, LCVs as a group have better safety performance than other articulated trucks. Turnpike doubles have the lowest collision rate of all articulated truck types (16 collisions per 100 million vehicle-kilometres of travel or VKT), followed by Rocky Mountain doubles (32 collisions per 100 million VKT). The collision rate for triple trailer combinations (62 collisions per 100 million VKT) is higher than the collision rates for tractor semitrailers (42 collisions per 100 million VKT) and legal-length tractor double trailers (44 collisions per 100 million VKT). These results are an important input for civil engineering and transport policy decisions concerning longer combination vehicle operations.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Hutchinson, B. G. y D. J. Parker. "Parametric analyses of large truck braking efficiencies". Canadian Journal of Civil Engineering 16, n.º 2 (1 de abril de 1989): 105–12. http://dx.doi.org/10.1139/l89-025.

Texto completo

Resumen

Simplified braking models are used to analyze the braking efficiencies of a range of truck types under a variety of loading conditions and tire–pavement coefficients of friction. These analyses show that while most of the fully loaded trucks are capable of achieving a braking efficiency of 70%, the braking efficiencies of the unloaded or partially unloaded trucks deteriorate substantially. A bobtail tractor, an unloaded semi-trailer with tridem rear axle group and two air-lift belly axles, and a B-train double trailer with rear trailer unloaded have estimated braking efficiencies of 40–50%. The braking distances required by the unloaded and partially loaded vehicles from a 100 km/h operating speed are two to four times longer than those specified in the Canadian geometric design standards. Comparisons of the model-estimated braking distances with those obtained in one set of field tests show that the models are capable of reflecting accurately observed field behaviour. The results presented in the paper demonstrate the need for a systematic review of those highway design standards that are based on the braking capabilities of vehicles using the highway system. Key words: highway geometric design, truck braking efficiency, braking distances, highway safety.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Bertoloni, William, Jorge Luiz da Silva, Janessa Sampaio de Abreu y Douglas Luís Andreolla. "Bem-estar e taxa de hematomas de bovinos transportados em diferentes distâncias e modelos de carroceria no estado do Mato Grosso - Brasil". Revista Brasileira de Saúde e Produção Animal 13, n.º 3 (septiembre de 2012): 850–59. http://dx.doi.org/10.1590/s1519-99402012000300022.

Texto completo

Resumen

Neste estudo, objetivou-se avaliar o bem-estar e taxa de hematomas de 3.415 bovinos nelore, transportados em diferentes tipos de caminhão (tipo truck, tipo carreta baixa, e tipo carreta double deck) e distâncias de transporte. Os animais transportados pela carreta double deck e tipo baixa apresentaram, no desembarque, maior incidência de quedas (77,52ª; 75,31ª) comparativamente aos caminhões truck (49,09b). Maior incidência de escorregões (95,78ª), vocalizações (82,9ª); utilização de ponteiras elétricas (96,06ª) e batidas em objetos fixos (88,74ª) também foram observadas em animais transportados pela double deck, comparativamente, a carreta tipo baixa e caminhão tipo truck. No segundo experimento, 120 bovinos nelore foram transportados nos mesmos caminhões, pelo mesmo matadouro-frigorífico, porém em duas distância de transporte diferentes (acima de 180km e abaixo de 130km). Observou-se maior incidência de hematomas nas carcaças de bovinos transportados pela carreta tipo double deck em ambas as distâncias (1,09ª; 1,02b) se comparada aos outros tratamentos, assim como maior ocorrência de lesões (1,81ª; 1,65ab). Utilizou-se o teste não paramétrico de Kruskal-Wallis a 5% de significância em delineamento inteiramente casualizado.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Shi, Cai Hong, Shao Hua Kang, Chun Hui Li, Jun Zhong Hu, Lin Huang y Xi Zheng Zhang. "Design and Analysis of Double Wishbone Suspension Module with Wheel-Track Variant Wheels". Advanced Materials Research 945-949 (junio de 2014): 867–73. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.867.

Texto completo

Resumen

Based on the new type of wheel-track variant wheel prototype which is developed independently and creatively, the paper focuses on several problems, including the severe wear of track links, the difficulty in steering under the form of track, and so on, and combines the characteristics of variant wheel, so as to design and analyze the positional parameters of variant wheel-double wishbone suspension module. Besides, through refitting the variant wheel based on a type of all terrain farmer truck (UTV), the paper builds a model for the kinematics analysis of UTV variant wheel—double wishbone suspension model, and takes the minimum of the weighed sum of changes in wheel alignment parameters and the lateral displacement of variant wheel which affect wheel wear and steering as the optimized objective, so as to carry out an optimization calculation for its suspension system. In addition to that, the paper modifies UTV based on the optimization results, solves the problems arising in the experiments of variant wheel, and provides theoretical support and references for the application of wheel-track variant wheel in other types of vehicles.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Xia, Xintao, Shujing Dong, Liming Sun y Tianju Chen. "Load Calculation and Design of Roller Crowning of Truck Hub Bearing". Open Mechanical Engineering Journal 9, n.º 1 (26 de febrero de 2015): 106–10. http://dx.doi.org/10.2174/1874155x01509010106.

Texto completo

Resumen

Double-row tapered roller bearing 353112 is used in trucks, and the external load and pressure distribution of the bearing are calculated combining with the specific operating conditions. Tapered roller bearings typically employ roller profile modification to equalize the load distribution, minimizing the stress concentration at the roller ends. Doing FEA (finite element analysis) on the contact stress with the changing roller crowning between roller and races, the appropriate roller profile and the crown drop of roller can be achieved. Finally the best control equation of roller crowning is obtained. It has important guiding significance for the improvement of roller crowning design of truck hub bearings.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Wahyudi, Dani Tri y Deni Shidqi Khaerudini. "DESIGN OF ANTI-SLIP SHOES FOR 12 TON PALM OIL TRUCK WHEELS". SINERGI 24, n.º 3 (9 de julio de 2020): 213. http://dx.doi.org/10.22441/sinergi.2020.3.006.

Texto completo

Resumen

The rainy season will have a severe problem to the transportation sector (including heavy-duty trucks) in the off-road area in Indonesia, especially in areas that do not have permanent access roads (asphalt or concrete roads). For heavy vehicles, especially oil palm transport trucks will experience such obstacles, including slippage when crossing muddy dirt roads, and it will have an impact on the logistics delivery process. Therefore, it is necessary to design a support system, especially on the wheels, to reduce the risk of skidding or rolling on truck-type vehicles. In this work, the design of the anti-slip shoe wheels of the colt diesel double type truck (CDD) is used on the rear-wheel-drive as a tool for handling the slippage. In this design, the maximum traction factor of the wheels based on the calculation on the rolling resistance should be higher than 594 kg. The next step is to determine the value of soil cohesion and soil internal friction angle obtained from the previous studies. In this study, a calculation simulation was carried out to accomplish the design of the main components of the anti-slip of a truck wheel in the form of a traction rod fin. The design is namely U channel profile steel based on SNI 07-0052-2006 type U50, U65, and U80 with dimensions of the fin depth (z) are 3.8 cm, 4.2 cm, and 4.5 cm and length of 30 cm. The results show that the three types of U channel iron used for the anti-slip shoes are useful for freeing trucks from slippage with a total load of 12 tons. Thus, the truck will be safe when crossing the muddy roads with clay, muddy clay, and sandy loam under the following conditions: minimum cohesion number of 0.008 kg/cm2, minimum internal friction angle in the soil of 4.631°, and the maximum water content of 59.6%.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Wahyudi, Dani Tri y Deni Shidqi Khaerudini. "Desain Sepatu Antiselip untuk Roda Truk Colt Diesel di Jalan Berlumpur". Jurnal Teknik Mesin 13, n.º 1 (6 de julio de 2020): 6–12. http://dx.doi.org/10.30630/jtm.13.1.278.

Texto completo

Resumen

The rains will make a serious problem for the transportation sector in Indonesia, especially in areas that do not have permanent access roads (asphalt or concrete roads). Heavy vehicles such as oil palm trucks will go into the skid when crossing muddy dirt roads, and it makes an impact on the logistics delivery process. It is necessary for designing a support system, especially on the part of the wheel, to reduce the risk of skidding or rolling. Anti-slip shoe wheels of the colt diesel double (CDD) type truck is used on the rear-wheel-drive as a tool for handling slippage. Calculations and corrections are performed for maximum traction of the ground rolling resistance at ≥ 396 kg. Furthermore, the value of soil cohesion and soil shear angle was determined from the previous studies. In this study, a calculation simulation was carried out to obtain the design of the main components of an antislip wheel of a truck, which is in the form of a traction rod fin using steel UNP SNI 07-0052-2006 with a fin depth of 4.5 cm and a length of 20 cm. These dimensions are effective enough to increase the truck wheel traction of 8 tons when used to cross muddy roads with a maximum water content of 59.6% and a minimum cohesion value of land (C) of 0.108 kg/cm2

Los estilos APA, Harvard, Vancouver, ISO, etc.

Más fuentes

Tesis sobre el tema "Double truck"

Pellegrini, Filippo. "An armored truck cab design : Case study: investigation of selected steel grades". Thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281532.

Texto completo

Resumen

This study aimed at defining useful guidelines for the design of an armored truck cab. Particularly, the quality and performance of ballistic steel were defined, considering not too high demanding requirements. Two steel grades, corresponding to hardness of 500 HB and 600 HB, and three different suppliers were selected. After dividing the truck cab into main areas, a FEM simulation was performed. The investigated model considered a specific standardized threat to impact against a double layer steel protection. Due to the high strain rates involved, the formation of adiabatic shear bands has been observed. However, the main purpose of the model was to find an ultimate thickness protection layout of armored steel plates. Thereby, the thicknesses to be attributed to the various components of the main areas could be estimated. Two alternatives were therefore hypothesized: the first considering the critical thickness case of penetration, and the second, an oversized version, supposed to be more resistant to penetration. It was thus possible to estimate the weight of the truck cab for the two above mentioned alternatives, and verify such hypothesized weight complied with the assigned requirement. A possible cutting operation was then considered in order to optimize the use of the steel plates. An estimation of the pre-series production costs of was finally derived.
Denna studie gjorde det möjligt att definiera användbara indikatorer och följa en möjlig multitasking-strategi för utformningen av en bepansrad lastbilshytt. Fallstudien syftade till att definiera kvalitet och prestanda av stål, vilket är ett av de vanligaste materialen för skydd, främst i de fall där kraven inte är så stora. Två stålkvaliteter motsvarande hårdhetsvärdena 500 HB och 600 HB valdes från var och en av tre materialleverantörer. Efter att ha delat upp truckhytten i några huvudområden startades en FEM-simulering med programvara från Impetus Afea. Modellen behandlade ett specifikt hot som var större än det önskade kravet på ett dubbelskiktsskydd. På grund av de inblandade höga deformationshastigheterna har bildningen av adiabatiska skjuvband observerats. Huvudsyftet med modellen var emellertid att hitta en ultimat skyddslayout för tjockleken, så att de tjocklekar som skulle tillskrivas de olika komponenterna i huvudområdena kunde härledas. Två alternativ antogs därför, det ena med tanke på den ultimata tjockleken och den andra med tanke på en skyddslayout som antas vara mer motståndskraftig mot penetrering. Det var således möjligt att uppskatta hyttens vikt för de två alternativen och kontrollera att den uppfyllde de fastställda kraven. Därefter övervägdes en möjlig skäroperation för att optimera användandet av de tillgängliga stålplattorna.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ramsay, Euan Douglas. "Assessment and reduction of the impacts of large freight vehicles on urban traffic corridor performance". Queensland University of Technology, 2007. http://eprints.qut.edu.au/16424/.

Texto completo

Resumen

Increasing demand for road freight has lead to a widespread adoption of more-productive large freight vehicles (LFVs), such as B-Doubles, by Australia's road freight industry. Individual LFVs have a greater potential to impact traffic efficiency through their greater length and poorer longitudinal performance. However, this is offset to an extent as fewer vehicles are required to perform a given freight task on a tonne-km basis. This research has developed a means of characterising the effects that large freight vehicles have on the performance of an urban arterial corridor managed by signalised intersections. A corridor-level microsimulation model was developed from first principles, which modelled the longitudinal performance of individual vehicles to a greater accuracy than most existing traffic simulation software does. The model was calibrated from traffic counts and GPS-equipped chase car surveys conducted on an urban arterial corridor in Brisbane's southern suburbs. The model was applied to various freight policy and traffic management scenarios, including freight vehicle mode choice, lane utilisation and traffic signal settings; as well as the effectiveness of green time extension for approaching heavy vehicles. Benefits were able to be quantified in terms of reduced travel times and stop rates for both heavy and light vehicles in urban arterial corridors.

Los estilos APA, Harvard, Vancouver, ISO, etc.

袁志勤 y Chi-kan Yuen. "A double-track greedy algorithm for VLSI channel routing". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31220241.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Yuen, Chi-kan. "A double-track greedy algorithm for VLSI channel routing /". Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19656373.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Lindfeldt, Olov. "Quality on single-track railway lines with passenger traffic : Anlytical model for evaluation of crossing stations and partial double-tracks". Licentiate thesis, KTH, School of Architecture and the Built Environment (ABE), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4560.

Texto completo

Resumen

Railway transportation is showing a substantial increase. Investments in new infrastructure, new fast and comfortable vehicles, and high frequency of service are important factors behind the increase.

Infrastructure configuration and timetable construction play important roles in the competitiveness of railway transportation. This is especially true on single-track lines where the travel times and other timetable related parameters are severely restricted by crossings (train meetings). The crossings also make the lines’ operation more sensitive to disturbances.

Since the major part of the Swedish railway network is single-track it is of great interest to examine the relationships between operation properties, such as travel times and reliability, and infrastructure configuration on single-track lines. The crossings are the core feature of single-track operation and this thesis focuses on the crossing time, i.e. the time loss that occurs in crossing situations.

A simplified analytical model, SAMFOST, has been developed to calculate the crossing time as a function of infrastructure configuration, vehicle properties, timetable and delays for two crossing trains. The effect of possible surrounding trains is not taken into account and all kinds of congestion effects are thus excluded from evaluation. SAMFOST has been successfully validated against the simulation tool RailSys, which shows that this type of simplified model is accurate in non-congested situations.

A great advantage of disregarding congested situations is that analysis is independent of timetable assumptions. The model also explicitly shows the effect of punctuality, which is of particular importance on single-track lines where the interdependencies between trains are strengthened by the crossings.

For the same reason, the timetable is severely constrained. Nonetheless, there is often a need for changes of the timetable (crossing pattern). The thesis proposes three simple measures of timetable flexibility, all based on assigned crossing time requirements. Together, these measures can be used to evaluate how infrastructure configuration, vehicle properties, punctuality etc affect possibilities to alter the timetable.

As an example of its application, SAMFOST has been used to evaluate the effect of shorter inter-station distance, partial double-track and combined crossing and passenger stop. These measures affect the operational properties quite differently.

More crossing stations result in a minor decrease in travel time (lower mean crossing time) but significantly higher reliability (lower crossing time variance). These effects are independent of punctuality, which is a valuable property.

A partial double-track results in shorter travel times and in some cases also higher reliability. Both effects are strongly dependent on punctuality and high punctuality is needed to achieve high effects.

A combined crossing and passenger stop results in a situation similar to that of a partial double-track. In this case it is important to point out that the assignment of time supplements in the timetable should be directly correlated to punctuality in order to achieve good operation.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Thomas, Jossian y Barenys Assís Arañó. "Evaluation of 3D dynamic effects induced by high-speed trains on double-track slab bridges". Thesis, KTH, Bro- och stålbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-188850.

Texto completo

Resumen

In addition to a static design, a dynamic analysis has to be performed for bridges for which the maximum permissible train speed exceeds 200 km/h. This analysis requires a lot of computing time, for this reason Svedholm and Andersson (2016) have developed a simple tool describing the relationship between the first eigenfrequency of the bridge, the span length and the minimum mass to fulfill the regulation specified in EN-1990. However, these diagrams are based on 2D beam models in which the 3D dynamic effects are not considered. An evaluation of the torsional modes has been performed by analyzing parametrized 3D bridge models, in order to obtain design diagrams including these effects. To do so, a frequency domain analysis has been implemented, based on a steadystate step previously performed in a FEM software. This approach provides a fast way to solve the equation of motion due to the Fourier transform properties, and allows applying several load configurations which are convenient for a parametric study. From this analysis it can be concluded that the thickness to fulfill the demands is larger for 3D models than for 2D. On one hand, contribution of torsional modes of vibration is more significant for the shortest span length, and on the other hand shear-lag effects lead to a reduction of the total resisting bending section.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Thellman, Jonas. "Vehicle Dynamics Testing in Advanced DrivingSimulators Using a Single Track Model". Thesis, Linköpings universitet, Fordonssystem, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79397.

Texto completo

Resumen

The purpose of this work is to investigate if simple vehicle models are realisticand useful in simulator environment. These simple models have been parametrisedby the Department of Electrical Engineering at Linköping University and havebeen validated with good results. The models have been implemented in a simulatorenvironment and a simulator study was made with 24 participants. Eachtest person drove both slalom and double lane change manoeuvres with the simplemodels and with VTI’s advanced model. The test persons were able to successfullycomplete double lane changes for higher velocities with the linear tyre modelcompared to both the non-linear tyre model and the advanced model. The wholestudy shows that aggressive driving of a simple vehicle model with non-linear tyredynamics is perceived to be quite similar to an advanced model. It is noted significantdifferences between the simple models and the advanced model when drivingunder normal circumstances, e.g. lack of motion cueing in the simple model suchas pitch and roll.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Lindfeldt, Olov. "Railway operation analysis : Evaluation of quality, infrastructure and timetable on single and double-track lines with analytical models and simulation". Doctoral thesis, KTH, Trafik och Logistik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12727.

Texto completo

Resumen

This thesis shows the advantages of simple models for analysis of railway operation. It presents two tools for infrastructure and timetable planning. It shows how the infrastructure can be analysed through fictive line designs, how the timetable can be treated as a variable and how delays can be used as performance measures. The thesis also gives examples of analyses of complex traffic situations through simulation experiments. Infrastructure configuration, timetable design and delays play important roles in the competitiveness of railway transportation. This is especially true on single-track lines where the run times and other timetable related parameters are severely restricted by crossings (train meetings). The first half of this thesis focuses on the crossing time, i.e. the time loss that occurs in crossing situations. A simplified analytical model, SAMFOST, has been developed to calculate the crossing time as a function of infrastructure configuration, vehicle properties, timetable and delays for two crossing trains. Three measures of timetable flexibility are proposed and they can be used to evaluate how infrastructure configuration, vehicle properties, punctuality etc affect possibilities to alter the timetable. Double-track lines operated with mixed traffic show properties similar to those of single-tracks. In this case overtakings imply scheduled delays as well as risk of delay propagation. Two different methods are applied for analysis of double-tracks: a combinatorial, mathematical model (TVEM) and simulation experiments. TVEM, Timetable Variant Evaluation Model, is a generic model that systematically generates and evaluates timetable variants. This method is especially useful for mixed traffic operation where the impact of the timetable is considerable. TVEM may also be used for evaluation of different infrastructure designs. Analyses performed in TVEM show that the impact on capacity from the infrastructure increases with speed differences and frequency of service for the passenger trains, whereas the impact of the timetable is strongest when the speed differences are low and/or the frequency of passenger services is low. Simulation experiments were performed to take delays and perturbations into account. A simulation model was set up in the micro simulation tool RailSys and calibrated against real operational data. The calibrated model was used for multi-factor analysis through experiments where infrastructure, timetable and perturbation factors were varied according to an experimental design and evaluated through response surface methods. The additional delay was used as response variable. Timetable factors, such as frequency of high-speed services and freight train speed, turned out to be of great importance for the additional delay, whereas some of the perturbation factors, i.e. entry delays, only showed a minor impact. The infrastructure factor, distance between overtaking stations, showed complex relationships with several interactions, principally with timetable factors.
QC20100622
Framtida infrastruktur och kvalitet i tågföring

Los estilos APA, Harvard, Vancouver, ISO, etc.

Lee, Brian. "A Monte Carlo investigation of radiation damage to chromatin fibers and production of DNA double strand breaks using Geant4-DNA code". Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53106.

Texto completo

Resumen

In the presented research we propose to improve on historically accepted radiobiological models via Monte Carlo simulation of radiation tracks passing through a cell nucleus modeled with up-to-date subnuclear structures. This is performed by generating a radiation track database using the Monte Carlo code, Geant4-DNA, that simulates radiation interactions at the nanometer scale of DNA. These tracks are called upon from the database and intersected with a cell nucleus model that incorporates DNA-containing structures. This allows for a Monte Carlo simulation of how DNA double strand breaks are produced by radiation. The results can be used to correlate to many experimentally observed biological endpoints, e.g. chromosome aberrations as well as cell death.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Quagliani, Renato. "Study of double charm B decays with the LHCb experiment at CERN and track reconstruction for the LHCb upgrade". Thesis, University of Bristol, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.752741.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Más fuentes

Libros sobre el tema "Double truck"

Woodrooffe, J. H. F. Technical analysis and recommended practice for the double-drawbar dolly using self-steering axles. Ottawa: Roads and Transportation Association of Canada, 1989.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Trirahmi, Melly. Double track 727 kilometer. Jakarta: Penerbit Buku Kompas, 2014.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ayres, Don. Don Ayres' Double track. 2^a ed. Ash Fork, AZ: Double Track Pub., 1998.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

1969-, Bright Susan y Bey Dawoud 1953-, eds. Double life. Seattle, Wash: Decode Books, 2011.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Columbia College (Chicago, Ill.). Midwest Photographers Publication Project., ed. Double life. New York, N.Y: Aperture, 2006.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Sholehuddin, M. Sistem sanksi dalam hukum pidana: Ide dasar double track system & implementasinya. Jakarta: Divisi Buku Perguruan Tinggi, RajaGrafindo Persada, 2003.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Quagliani, Renato. Study of Double Charm B Decays with the LHCb Experiment at CERN and Track Reconstruction for the LHCb Upgrade. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01839-9.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Un week-end à la pêche: Tous les secrets, trucs et astuces pour épater vos amis et votre famille. [Paris]: Hachette nature, 2013.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Canada. Bill: An act to remove doubts as to the title of Leonidas Burwell to certain lands in the Township of Bayham. Quebec: Printed for the Contractors by Hunter, Rose & Lemieux, 2001.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Tom, Badgett, ed. Ultimate unauthorized Nintendo game strategies: Winning Strategies for 100 Top Games. New York: Bantam Books, 1989.

Buscar texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Más fuentes

Capítulos de libros sobre el tema "Double truck"

Liu, Wangsheng, Pengxiang Tong y Zhenliang Cai. "Container Stacking Dispersion Degree and Truck Configuration Under Double Cycling Process". En Advances in Intelligent Systems and Computing, 464–69. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43306-2_66.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Davis, Melton S. "The Double-Track". En Who Defends Rome?, 248–55. London: Routledge, 2021. http://dx.doi.org/10.4324/9781003213314-22.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Liao, Jili. "Discussing the ‘Double-track System’". En The Foundations of the Chinese Planned Economy, 69–77. London: Palgrave Macmillan UK, 1989. http://dx.doi.org/10.1007/978-1-349-20311-6_7.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Kaiser, Karl. "NATO’s Double-Track Decision, the Peace Movement, and Arms Control". En Towards Mutual Security, 119–28. Göttingen: Vandenhoeck & Ruprecht, 2014. http://dx.doi.org/10.13109/9783666300547.119.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Weik, Norman, Stephan Zieger y Nils Nießen. "Traffic Management Heuristics for Bidirectional Segments on Double-Track Railway Lines". En Operations Research Proceedings, 729–35. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-89920-6_97.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Tohari, Adrin y Arifan Jaya Syahbana. "Rain-Induced Failure of Railway Embankment at Double Track Lane at Bogor and Its Countermeasure". En Advancing Culture of Living with Landslides, 577–86. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53487-9_68.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Wang, Yu, Rina Su y Guojun Li. "Research on PBL and LBL Double Track Teaching Model in Unified Modeling Language Teaching Based on Outstanding Engineers". En Lecture Notes in Electrical Engineering, 381–86. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-4796-1_49.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Yolcu, Cem, Magnus Herberthson, Carl-Fredrik Westin y Evren Özarslan. "Magnetic Resonance Assessment of Effective Confinement Anisotropy with Orientationally-Averaged Single and Double Diffusion Encoding". En Mathematics and Visualization, 203–23. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-56215-1_10.

Texto completo

Resumen

AbstractPorous or biological materials comprise a multitude of micro-domains containing water. Diffusion-weighted magnetic resonance measurements are sensitive to the anisotropy of the thermal motion of such water. This anisotropy can be due to the domain shape, as well as the (lack of) dispersion in their orientations. Averaging over measurements that span all orientations is a trick to suppress the latter, thereby untangling it from the influence of the domains’ anisotropy on the signal. Here, we consider domains whose anisotropy is modeled as being the result of a Hookean (spring) force, which has the advantage of having a Gaussian diffusion propagator while still confining the spatial range for the diffusing particles. In fact, this confinement model is the effective model of restricted diffusion when diffusion is encoded via gradients of long durations, making the model relevant to a broad range of studies aiming to characterize porous media with microscopic subdomains. In this study, analytical expressions for the powder-averaged signal under this assumption are given for so-called single and double diffusion encoding schemes, which sensitize the MR signal to the diffusive displacement of particles in, respectively, one or two consecutive time intervals. The signal for one-dimensional diffusion is shown to exhibit power-law dependence on the gradient strength while its coefficient bears signatures of restricted diffusion.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Mehdizadeh, S., A. R. Arshi, E. Shirzad y H. Nabavi. "Comparison of Single and Double Inverted Pendulum Models in Determining Cerebral Palsy Trunk Muscles in Sitting Position: A Subject Specific Approach". En IFMBE Proceedings, 667–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-14515-5_170.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Cummings, Scott L. "Truck Drivers". En An Equal Place, 311–445. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780190215927.003.0006.

Texto completo

Resumen

This chapter examines the monumental campaign to raise labor and environmental standards in the trucking industry at the Los Angeles and Long Beach ports. Building on the blue-green coalition launched in the CBA and big-box contexts—and incorporating central lessons from a decade of community–labor organizing in Los Angeles—the Campaign for Clean Trucks emerged as a fight over air quality but ultimately advanced as a local policy struggle over working conditions for roughly sixteen thousand short-haul port truck drivers. For these drivers, the central problem was their misclassification as independent contractors. Misclassification forced drivers to bear all the costs of operation—contributing to poorly maintained dirty diesel trucks causing air pollution—while depriving them of the right to organize unions to improve labor conditions. Restoring drivers to the status of employees was the mutual goal bringing together the labor and environmental movements in this campaign. It rested on a novel legal foundation: The ports, as publicly owned and operated entities, had the power to define the terms of entry for trucking companies through contracts called concession agreements. The campaign—led by LAANE, the Teamsters union, and NRDC—leveraged this contracting power to win passage of the landmark 2008 Clean Truck Program, which committed trucking companies seeking to enter the Los Angeles port to a double conversion: of dirty to clean fuel trucks (thus reducing pollution) and of independent contractor to employee drivers (thus enabling unionization). However, the program’s labor centerpiece—employee conversion—was invalidated by an industry preemption lawsuit that went all the way to the United States Supreme Court. As a result, the policy gains from a blue-green campaign built on mutual interest were split apart and reallocated, resulting in environmental victory but labor setback. Why the coalition won the local policy battle but lost in court—and how the labor movement responded to this legal setback through an innovative strategy to maneuver around preemption—are the central questions this chapter explores.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Actas de conferencias sobre el tema "Double truck"

Boyden, David E., Thomas J. Doyle, Edward A. Frutig y Martin G. Riccitelli. "Trunnion-Type Double Cardan onstant Velocity Steering Joint". En International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1993. http://dx.doi.org/10.4271/933016.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Okazaki, Yoichiro y Kiyoshi Komatsuzaki. "Double Cone Synchronizer with Paper Lining for Medium Duty Trucks". En International Truck & Bus Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1990. http://dx.doi.org/10.4271/902278.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Wang, Rui, Olivier Renaudin, C. Umit Bas, Seun Sangodoyin y Andreas F. Molisch. "Double-Directional Channel Characterization of Truck-to-Truck Communication in Urban Environment". En 2017 IEEE 86th Vehicular Technology Conference (VTC-Fall). IEEE, 2017. http://dx.doi.org/10.1109/vtcfall.2017.8287890.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Zhao, Lijun, Ying Li y Jing Pei. "Analysis of Double Front Suspension for Mining Truck". En 2016 2nd Workshop on Advanced Research and Technology in Industry Applications (WARTIA-16). Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/wartia-16.2016.242.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Bata, Reda M., Alvon C. Elrod, Richard W. Rice y Mohamed M. Elkoth. "Double-Pass vs. Single-Pass Radiators for Automotive Application". En SAE International Truck and Bus Meeting and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1989. http://dx.doi.org/10.4271/892466.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ming-Liang, Tang, Shen Bang-Jun, Chen Yao-Feng y Bi Chuan-Pu. "Application of a Double-Grooved Spring Steel 55SiMnVB in the Aeolus Truck EQ-140". En 4th International Pacific Conference on Automotive Engineering. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1987. http://dx.doi.org/10.4271/871253.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Gao, X. M., Y. Yang y Z. H. Wu. "Genetic algorithm for scheduling double different size crane system with different truck ready times". En 2016 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM). IEEE, 2016. http://dx.doi.org/10.1109/ieem.2016.7797915.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Schmidt, Sebastian, Martin G. Rose, Markus Müller, Siegfried Sumser, Elias Chebli, Thomas Streule, Michael Stiller y Johannes Leweux. "Variable Asymmetric Turbine for Heavy Duty Truck Engines". En ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-94590.

Texto completo

Resumen

Turbochargers with variable turbine geometry (VGT) are established in diesel engines for passenger cars because of the beneficial effect on transient operation. The variability permits the reduction of exhaust back pressure, resulting in lower fuel consumption. There are only a few applications in heavy duty truck engines due to increased mechanical complexity and vulnerability to failure. This paper presents a turbine concept with a simple variability developed for a heavy duty engine. The variability is achieved upstream of the rotor by changing the sectional area of the volute. This can be done through a rotationally movable ring which shifts the circumferential position of the volute tongues. These separate both scrolls of a double segment turbine and can be rotated by an electric actuator. The performance maps measured at the hot gas test stand show the large variability of the flow parameter and the high efficiency levels over the operating range of the variable asymmetric turbine (VAT). The flow field is computed by the use of 3D-CFD simulations in order to analyze the loss-generating mechanisms that occur within the machine. Test runs on an engine test stand demonstrate the high potential of the concept concerning reduction of fuel consumption and a wide scope of realizable EGR rates in order to reduce NOx emissions in a cost-effective way. The resultant large mass flow variability allows the deletion of the waste gate and enables efficiency improvements.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Yu, Hua-Qiang, Yong-Hai Wu, Wei Zhu y Hai-Tao Bao. "Simulation Analysis of the Unloading Process of Material Suction and Exhaust Truck Based on Euler Double Fluid Model". En 2019 IEEE 7th International Conference on Computer Science and Network Technology (ICCSNT). IEEE, 2019. http://dx.doi.org/10.1109/iccsnt47585.2019.8962494.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Burshtin, Michael L. "The Pennsylvania Railroad GG1 Electric Locomotive: A Retrospective". En 2020 Joint Rail Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/jrc2020-8002.

Texto completo

Resumen

Abstract This paper is a historical review of the design and operation of the Pennsylvania Railroad’s class GG1 electric locomotive over its heavily-trafficked New York City-Washington, DC main line during the period 1934–1983. The locomotive was designed in-house by the railroad in corroboration with Baldwin Locomotive, General Electric and Westinghouse Electric following competitive tests of several electric locomotive designs. Its outstanding performance and long operating life has resulted in it being generally considered the most highly regarded electric locomotive in North America. The Pennsylvania Railroad embarked in the late 1920’s on a major AC electrification program for its New York-Washington and Philadelphia-Harrisburg main lines and local branches. It initially planned to use a fleet of class P5 rigid frame 2-C-2 electric locomotives for service. However problems were quickly encountered with damaging lateral track impacts, axle cracks, truck hunting, and inadequate tractive effort. The railroad responded with a series of competitive evaluation tests of several locomotive designs including a recent New York, New Haven & Hartford (NYNH&H) Railroad articulated frame locomotive, using an ingenious method to measure truck lateral forces. As a result, the railroad developed two prototype electric locomotive designs, a rigid frame class R1 2-D-2 and an articulated frame class GG1 2-C+C-2. Follow-up track testing verified that the GG1 had lower track lateral forces, and was selected for production. The 4,620 hp GG1 combined several significant North American design concepts: - Exceptional power from six double-armature traction motors for heavy passenger train operation at 100 mph; - Double-ended body design to eliminate the need to turn locomotives; - Use of separate truck frames with an articulation joint connection, allowing improved rail tracking and lower lateral forces; - Housing the main transformer and locomotive cabs in the center body, providing increased crew accident protection in collisions; - Use of high voltage Alternating Current (11 kV at 25 Hz); and - One of the first applications of Industrial Design (by Donald R. Dohner and Raymond F. Loewy) producing a streamlined locomotive using a welded carbody. The GG1 was quickly recognized as a rare combination of stellar performance, robust construction, and low maintenance costs. It was used to inaugurate electrified New York-Washington operations, performed admirably during World War II, successfully made the later transition to freight train operation, and was finally retired in October 1983. The prototype GG1 locomotive 4800 has been designated an ASME national engineering landmark.

Los estilos APA, Harvard, Vancouver, ISO, etc.

Informes sobre el tema "Double truck"

Hendricks, T. J. An aerial radiological survey of the Double Track Site and surrounding area. Central Nevada. Office of Scientific and Technical Information (OSTI), julio de 1995. http://dx.doi.org/10.2172/184045.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

An equipment operator died after being run over by a double trailer truck. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, septiembre de 2004. http://dx.doi.org/10.26616/nioshsface03ca009.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

An aerial radiological survey of the Double Track Site and surrounding area, Central Nevada. Date of survey: December 1993. Office of Scientific and Technical Information (OSTI), agosto de 1995. http://dx.doi.org/10.2172/125029.

Texto completo

Los estilos APA, Harvard, Vancouver, ISO, etc.

Ofrecemos descuentos en todos los planes premium para autores cuyas obras están incluidas en selecciones literarias temáticas. ¡Contáctenos para obtener un código promocional único!