Results 41 to 50 of about 694,974 (290)

The extremal spectral radii of $k$-uniform supertrees

, 2014
In this paper, we study some extremal problems of three kinds of spectral radii of $k$-uniform hypergraphs (the adjacency spectral radius, the signless Laplacian spectral radius and the incidence $Q$-spectral radius). We call a connected and acyclic $k$
Li, Honghai, Qi, Liqun, Shao, Jiayu
core   +1 more source

Truncations of stellar disk and warps of HI-layers in edge-on spiral galaxies [PDF]

, 2007
Edge-on spiral galaxies often have stellar disks with relatively sharp truncations and warped HI-layers in the outer parts. Warps appear to start preferentially near the optical boundaries of the disks.
Andredakis, Arp, Battaglia, Bell, Bland-Hawthorn, Bosma, Bottema, Bottema, Bottema, Bottema, Briggs, Burke, Casertano, de Jong, Debattista, Fall, Florido, Freeman, Fry, García-Ruiz, Goldreich, Holwerda, Kamphuis, Kamphuis, Kerr, Kormendy, Kregel, Kregel, Larson, López-Corredoira, Morrison, Morrison, Olling, P. C. van der Kruit, Pohlen, Reshetnikov, Reshetnikov, Rogstad, Rupen, Sancisi, Schaye, Shen, Shostak, Sparke, Swaters, van der Kruit, van der Kruit, van der Kruit, van der Kruit, van der Kruit, van der Kruit, van der Kruit, van der Kruit, Verheijen, Wevers, Wu, Xilouris   +56 more
core   +3 more sources

Far-Ultraviolet Cooling Features of the Antlia Supernova Remnant

, 2007
We present far-ultraviolet observations of the Antlia supernova remnant obtained with Far-ultraviolet IMaging Spectrograph (FIMS, also called SPEAR). The strongest lines observed are C IV 1548,1551 and C III 977.
Edelstein, Jerry, Han, Wonyong, Kim, Il-Joong, Korpela, Eric J., Min, Kyoung Wook, Nam, Uk-Won, Park, Jang-Hyun, Ryu, Kwang-Sun, Sankrit, Ravi, Shinn, Jong-Ho   +9 more
core   +1 more source

Comparative experimental study on edge machining of carbide end milling cutter with different tool passivation methods

Jin'gangshi yu moliao moju gongcheng
A tool passivation method called the rotating abrasive flow passivation method is proposed as a means to improve tool performance and processing quality.
Ben WANG, Zhikai LONG, Yingxiao ZHENG, Wanwan SONG, Xiuyun ZHANG   +4 more
doaj   +1 more source

Influence of Cutting Parameters and Tool Edge Geometries on the Machinability of AISI 52100 Steel in Hard Whirling

Engineering Transactions, 2023
The synergistic effect of prepared tool edge and cutting parameters in hard whirling is still unclear, limiting its application in producing large precision ball screws.
Shuquan SONG, Yu ZHANG, Jiangtao CHENG, Hao ZHANG, Xiangyu GUAN, Dunwen ZUO, Xiaoqiang SHEN   +6 more
doaj   +1 more source

Edge fluctuations for random normal matrix ensembles

, 2021
A famous result going back to Eric Kostlan states that the moduli of the eigenvalues of random normal matrices with radial potential are independent yet non identically distributed.
García-Zelada, David
core   +2 more sources

Haloes at the ragged edge: the importance of the splashback radius [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
We have explored the outskirts of dark matter haloes out to 2.5 times the virial radius using a large sample of halos drawn from Illustris, along with a set of zoom simulations (MUGS). Using these, we make a systematic exploration of the shape profile beyond R$_{vir}$.
O. N. Snaith, J. Bailin, A. Knebe, G. Stinson, J. Wadsley, H. Couchman   +5 more
openaire   +2 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Optimizing the simultaneous cutting-edge angles, included angle and nose radius for low cutting force in turning polyamide PA66

Results in Materials, 2020
Cutting force is a basic machining performance indicator of cost and quality. There is a lack of information about the tool geometry influence on the cutting force in turning polyamide PA66, which is widely used in manufacturing of machine elements that ...
Paiman Sidiq, Rzgar M. Abdalrahman, Sarkawt Rostam   +2 more
doaj   +1 more source

Heredity for generalized power domination

, 2016
In this paper, we study the behaviour of the generalized power domination number of a graph by small changes on the graph, namely edge and vertex deletion and edge contraction.
Dorbec, Paul, Varghese, Seethu, Vijayakumar, Ambat   +2 more
core   +2 more sources