Zobrazeno 1 - 10
of 462
pro vyhledávání: '"Bryant, John P."'
When studying a national-level population, demographers can safely ignore the effect of individual-level randomness on age-sex structure. When studying a single community, or group of communities, however, the potential importance of individual-level
Externí odkaz:
http://arxiv.org/abs/2406.15514
Autor:
Smetana, Jiri, Ubhi, Amit Singh, Chick, Emilia, Prokhorov, Leonid, Bryant, John, Dmitriev, Artemiy, Gill, Alex, Koponen, Lari, Miao, Haixing, Cumming, Alan V., Hammond, Giles, Frolov, Valery, Mittleman, Richard, Fritchel, Peter, Martynov, Denis
We present a pair of seismometers capable of measurement in all six axes of rigid motion. The vacuum-compatible devices implement compact interferometric displacement sensors to surpass the sensitivity of typical electrical readout schemes. Together
Externí odkaz:
http://arxiv.org/abs/2405.13475
Autor:
Jia, Wenxuan, Xu, Victoria, Kuns, Kevin, Nakano, Masayuki, Barsotti, Lisa, Evans, Matthew, Mavalvala, Nergis, Abbott, Rich, Abouelfettouh, Ibrahim, Adhikari, Rana, Ananyeva, Alena, Appert, Stephen, Arai, Koji, Aritomi, Naoki, Aston, Stuart, Ball, Matthew, Ballmer, Stefan, Barker, David, Berger, Beverly, Betzwieser, Joseph, Bhattacharjee, Dripta, Billingsley, Garilynn, Bode, Nina, Bonilla, Edgard, Bossilkov, Vladimir, Branch, Adam, Brooks, Aidan, Brown, Daniel, Bryant, John, Cahillane, Craig, Cao, Huy-tuong, Capote, Elenna, Chen, Yanbei, Clara, Filiberto, Collins, Josh, Compton, Camilla, Cottingham, Robert, Coyne, Dennis, Crouch, Ryan, Csizmazia, Janos, Cullen, Torrey, Dartez, Louis, Demos, Nicholas, Dohmen, Ezekiel, Driggers, Jenne, Dwyer, Sheila, Effler, Anamaria, Ejlli, Aldo, Etzel, Todd, Feicht, Jon, Frey, Raymond, Frischhertz, William, Fritschel, Peter, Frolov, Valery, Fulda, Paul, Fyffe, Michael, Ganapathy, Dhruva, Gateley, Bubba, Giaime, Joe, Giardina, Dwayne, Glanzer, Jane, Goetz, Evan, Jones, Aaron, Gras, Slawomir, Gray, Corey, Griffith, Don, Grote, Hartmut, Guidry, Tyler, Hall, Evan, Hanks, Jonathan, Hanson, Joe, Heintze, Matthew, Helmling-cornell, Adrian, Huang, Hsiang-yu, Inoue, Yuki, James, Alasdair, Jennings, Austin, Karat, Srinath, Kasprzack, Marie, Kawabe, Keita, Kijbunchoo, Nutsinee, Kissel, Jeffrey, Kontos, Antonios, Kumar, Rahul, Landry, Michael, Lantz, Brian, Laxen, Michael, Lee, Kyung-ha, Lesovsky, Madeline, Llamas, Francisco, Lormand, Marc, Loughlin, Hudsonalexander, Macas, Ronaldas, Macinnis, Myron, Makarem, Camille, Mannix, Benjaminrobert, Mansell, Georgia, Martin, Rodica, Maxwell, Nyath, Mccarrol, Garrett, Mccarthy, Richard, Mcclelland, David, Mccormick, Scott, Mcculler, Lee, Mcrae, Terry, Mera, Fernando, Merilh, Edmond, Meylahn, Fabian, Mittleman, Richard, Moraru, Dan, Moreno, Gerardo, Mould, Matthew, Mullavey, Adam, Nelson, Timothy, Neunzert, Ansel, Oberling, Jason, Ohanlon, Timothy, Osthelder, Charles, Ottaway, David, Overmier, Harry, Parker, William, Pele, Arnaud, Pham, Huyen, Pirello, Marc, Quetschke, Volker, Ramirez, Karla, Reyes, Jonathan, Richardson, Jonathan, Robinson, Mitchell, Rollins, Jameson, Romie, Janeen, Ross, Michael, Sadecki, Travis, Sanchez, Anthony, Sanchez, Eduardo, Sanchez, Luis, Savage, Richard, Schaetzl, Dean, Schiworski, Mitchell, Schnabel, Roman, Schofield, Robert, Schwartz, Eyal, Sellers, Danny, Shaffer, Thomas, Short, Ryan, Sigg, Daniel, Slagmolen, Bram, Soni, Siddharth, Sun, Ling, Tanner, David, Thomas, Michael, Thomas, Patrick, Thorne, Keith, Torrie, Calum, Traylor, Gary, Vajente, Gabriele, Vanosky, Jordan, Vecchio, Alberto, Veitch, Peter, Vibhute, Ajay, Vonreis, Erik, Warner, Jim, Weaver, Betsy, Weiss, Rainer, Whittle, Chris, Willke, Benno, Wipf, Christopher, Yamamoto, Hiro, Yu, Haocun, Zhang, Liyuan, Zucker, Michael
Precision measurements of space and time, like those made by the detectors of the Laser Interferometer Gravitational-wave Observatory (LIGO), are often confronted with fundamental limitations imposed by quantum mechanics. The Heisenberg uncertainty p
Externí odkaz:
http://arxiv.org/abs/2404.14569
Autor:
Bryant, John, Kukutai, Tahu
Data on historical populations often extends no further than numbers of people by broad age-sex group, with nothing on numbers of births or deaths. Demographers studying these populations have experimented with methods that use the data on numbers of
Externí odkaz:
http://arxiv.org/abs/2402.02666
Autor:
Prokhorov, Leonid, Cooper, Sam, Ubhi, Amit Singh, Mow-Lowry, Conor, Bryant, John, Dmitriev, Artemiy, Di Fronzo, Chiara, Collins, Christopher J., Gill, Alex, Mitchell, Alexandra, Heinze, Joscha, Smetana, Jiri, Yan, Tianliang, Cumming, Alan V., Hammond, Giles, Martynov, Denis
We present the design, control system, and noise analysis of a 6-axis seismometer comprising a mass suspended by a single fused silica fibre. We utilise custom-made, compact Michelson interferometers for the readout of the mass motion relative to the
Externí odkaz:
http://arxiv.org/abs/2307.12891
Autor:
Ubhi, Amit Singh, Prokhorov, Leonid, Cooper, Sam, Di Fronzo, Chiara, Bryant, John, Hoyland, David, Mitchell, Alexandra, van Dongen, Jesse, Mow-Lowry, Conor, Cumming, Alan, Hammond, Giles, Martynov, Denis
We demonstrate the control scheme of an active platform with a six degree of freedom (6D) seismometer. The inertial sensor simultaneously measures translational and tilt degrees of freedom of the platform and does not require any additional sensors f
Externí odkaz:
http://arxiv.org/abs/2207.10417
Displacement sensors have a variety of applications within gravitational wave detectors. The seismic isolation chain of the LIGO core optics utilises optical shadow sensors for their stabilisation. Future upgrades, such as LIGO Voyager, plan to opera
Externí odkaz:
http://arxiv.org/abs/2205.08881
Autor:
Ubhi, Amit Singh, Smetana, Jiri, Zhang, Teng, Cooper, Sam, Prokhorov, Leonid, Bryant, John, Hoyland, David, Miao, Haixing, Martynov, Denis
Publikováno v:
Class. Quantum Grav. 39 015006 (2022)
Ground vibrations couple to the longitudinal and angular motion of the aLIGO test masses and limit the observatory sensitivity below 30\,Hz. Novel inertial sensors have the potential to improve the aLIGO sensitivity in this band and simplify the lock
Externí odkaz:
http://arxiv.org/abs/2109.07880
Akademický článek
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Autor:
Morffy, Nicholas, Van den Broeck, Lisa, Miller, Caelan, Emenecker, Ryan J., Bryant, John A., Lee, Tyler M., Sageman-Furnas, Katelyn, Wilkinson, Edward G., Pathak, Sunita, Kotha, Sanjana R., Lam, Angelica, Mahatma, Saloni, Pande, Vikram, Waoo, Aman, Wright, R. Clay, Holehouse, Alex S., Staller, Max V., Sozzani, Rosangela, Strader, Lucia C.
Publikováno v:
Nature; August 2024, Vol. 632 Issue: 8023 p166-173, 8p