Results 21 to 30 of about 15,594,346 (384)

Internal Cluster Structure [PDF]

Space Science Reviews, 2013
The core structure of galaxy clusters is fundamentally important. Even though self-gravitating systems have no stable equilibrium state due to their negative heat capacity, numerical simulations find density profiles which are universal in the sense that they are fairly flat within a scale radius and gradually steepen farther outward, asymptotically ...
Matthias Bartelmann, Marceau Limousin, Massimo Meneghetti, R. W. Schmidt   +3 more
openaire   +4 more sources

Numerical Investigation on the Effect of Ammonium Perchlorate Content and Position on the Combustion Characteristics of an Ammonium Perchlorate/Hydroxyl-Terminated Polybutadiene Propellant

Aerospace, 2023
A gas–solid-coupled sandwich combustion model was established for ammonium perchlorate (AP)/hydroxyl-terminated polybutadiene (HTPB) composite propellant.
Di Sun, Yongzhou Li, Peijin Liu, Bofeng Chen, Wei Fan   +4 more
doaj   +1 more source

Evaluation of the 3D Printing Accuracy of a Dental Model According to Its Internal Structure and Cross-Arch Plate Design: An In Vitro Study

Materials, 2020
The amount of photopolymer material consumed during the three-dimensional (3D) printing of a dental model varies with the volume and internal structure of the modeling data.
Seung-Ho Shin, Jung-Hwa Lim, You-Jung Kang, Jee-Hwan Kim, June-Sung Shim, Jong-Eun Kim   +5 more
semanticscholar   +1 more source

A New Erosive Burning Model of Solid Propellant Based on Heat Transfer Equilibrium at Propellant Surface

International Journal of Aerospace Engineering, 2020
Erosive burning refers to the augmentation of propellant burning rate appears when the velocity of combustion gas flowing parallel to the propellant surface is relatively high.
Yanjie Ma, Futing Bao, Lin Sun, Yang Liu, Weihua Hui   +4 more
doaj   +1 more source

Bistability and Triggering Analysis of Thermoacoustic Instability in a Horizontal Rijke Tube

Xibei Gongye Daxue Xuebao, 2019
Dynamical systems theory has been often employed to study nonlinear flow and flame dynamics in combustion systems. However, the corresponding studies using nonlinear dynamics to analyze the Rijke tube thermoacoustic system are still occasional.

doaj   +1 more source

Influence of Mass Flow Rate on the Atomization Characteristics of Screw Conveyor Swirl Injectors

Aerospace, 2022
This study conducted cold flow experimental research on the influence of mass flow rate on the atomization characteristics of screw conveyer swirl injectors in an opening environment.
Xianggeng Wei, Yiming Feng, Jinying Ye, Na Li, Oskar J. Haidn   +4 more
doaj   +1 more source

Research on Skin-Friction Drag Reduction by Hydrogen Injection in Supersonic Boundary Layer

Xibei Gongye Daxue Xuebao, 2019
In order to investigate the applicability of the skin-friction reduction technique using hydrogen injecting into turbulent boundary layer, three-dimensional numerical simulation was carried out for a constant-cross-confined-space with rearward facing ...

doaj   +1 more source

Internal Data Structures

Applied Statistics, 1971
In most computer languages, the data are regarded as being held in machine storage either as individual scalar quantities or as members of rectangular arrays. It would make these languages more useful if the user were allowed to specify the shapes of other structures in which he wished to consider the data as being held, such as triangular arrays ...
Gower, J. C., Hill, I. D.
openaire   +2 more sources

SEIS: Insight’s Seismic Experiment for Internal Structure of Mars

Space Science Reviews, 2019
By the end of 2018, 42 years after the landing of the two Viking seismometers on Mars, InSight will deploy onto Mars’ surface the SEIS (Seismic Experiment for Internal Structure) instrument; a six-axes seismometer equipped with both a long-period three ...
P. Lognonné, W. Banerdt, D. Giardini, W. Pike, U. Christensen, P. Laudet, S. D. Raucourt, P. Zweifel, S. Calcutt, M. Bierwirth, K. Hurst, F. Ijpelaan, J. Umland, R. Llorca-Cejudo, S. Larson, R. Garcia, S. Kedar, B. Knapmeyer‐Endrun, D. Mimoun, A. Mocquet, M. Panning, R. Weber, A. Sylvestre-baron, G. Pont, N. Verdier, L. Kerjean, L. J. Facto, V. Gharakanian, J. Feldman, T. Hoffman, D. Klein, K. Klein, N. Onufer, J. Paredes-Garcia, M. Petkov, J. Willis, S. Smrekar, M. Drilleau, T. Gabsi, T. Nebut, O. Robert, S. Tillier, C. Moreau, M. Parise, G. Aveni, S. Charef, Y. Bennour, T. Camus, P. A. Dandonneau, C. Desfoux, B. Lecomte, B. Lecomte, O. Pot, O. Pot, P. Revuz, D. Mance, J. tenPierick, N. Bowles, C. Charalambous, A. Delahunty, A. Delahunty, J. Hurley, J. Hurley, R. Irshad, Huafeng Liu, Huafeng Liu, A. Mukherjee, I. Standley, A. Stott, J. Temple, T. Warren, M. Eberhardt, A. Kramer, W. Kühne, E. Miettinen, M. Monecke, C. Aicardi, M. André, J. Baroukh, A. Borrien, A. Bouisset, P. Boutté, K. Brethomé, C. Brysbaert, T. Carlier, M. Deleuze, J. Desmarres, D. Dilhan, C. Doucet, D. Faye, N. Faye-Refalo, R. González, C. Imbert, C. Larigauderie, E. Locatelli, L. Luno, J.-R. Meyer, F. Mialhe, J. Mouret, M. Nonon, Y. Pahn, A. Paillet, P. Pasquier, G. Pérez, R. Perez, L. Perrin, B. Pouilloux, A. Rosak, I. S. D. Larclause, J. Sicre, M. Sodki, N. Toulemont, B. Vella, C. Yana, F. Alibay, O. M. Avalos, M. Balzer, P. Bhandari, E. Blanco, B. Bone, J. Bousman, P. Bruneau, F. Calef, R. Calvet, S. D’Agostino, G. D. L. Santos, R. Deen, R. Denise, J. Ervin, N. Ferraro, H. Gengl, F. Grinblat, D. Hernández, M. Hetzel, M. Johnson, L. Khachikyan, Justin Lin, S. Madzunkov, S. Marshall, I. Mikellides, E. Miller, W. Raff, Jaime Singer, C. Sunday, J. Villalvazo, M. Wallace, D. Banfield, J. Rodríguez-Manfredi, C. Russell, A. Trebi-Ollennu, J. Maki, É. Beucler, M. Böse, C. Bonjour, J. Berenguer, S. Ceylan, J. Clinton, V. Conejero, I. Daubar, V. Dehant, P. Delage, F. Euchner, I. Estève, L. Fayon, L. Ferraioli, C. Johnson, C. Johnson, J. Gagnepain-Beyneix, M. Golombek, Amir Khan, T. Kawamura, B. Kenda, P. Labrot, N. Murdoch, C. Pardo, C. Perrin, L. Pou, A. Sauron, D. Savoie, S. Stähler, É. Stutzmann, N. Teanby, J. Tromp, M. Driel, M. Wieczorek, R. Widmer‐Schnidrig, J. Wookey   +186 more
semanticscholar   +1 more source

On the Formation and Structure of International Exchanges [PDF]

SSRN Electronic Journal, 1999
We investigate the formation and structure of 248 financial exchanges throughout the world. First, we empirically analyze the determinants of exchange formation as well as the impact of exchange formation on the domestic country's economy. Second, conditional on formation, we use a probit model to relate the choice of trading mechanism to the ...
Clayton, Matthew J., Jorgensen, Bjorn N., Kavajecz, Kenneth A.   +2 more
openaire   +6 more sources